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authorjaseg <git-bigdata-wsl-arch@jaseg.de>2020-10-12 20:15:41 +0200
committerjaseg <git-bigdata-wsl-arch@jaseg.de>2020-10-12 20:15:41 +0200
commite16ec19e3a445c1156c990ed71628fb183332be9 (patch)
treeaf95b48f15f35665342f5aba76625df3849927d2
downloadfenris-master.tar.gz
fenris-master.tar.bz2
fenris-master.zip
Initial commitHEADmaster
-rw-r--r--.gitmodules12
-rw-r--r--Makefile160
-rw-r--r--config/fe_config.c17
-rw-r--r--include/bootloader.h22
-rw-r--r--include/cobs.h23
-rw-r--r--include/fe_clocks.h14
-rw-r--r--include/fe_config_backend.h40
-rw-r--r--include/fe_global.h19
-rw-r--r--include/fe_interrupts.h14
-rw-r--r--include/musl_include_shims/bits/alltypes.h23
-rw-r--r--include/musl_include_shims/endian.h80
-rw-r--r--include/musl_include_shims/features.h40
-rw-r--r--include/musl_include_shims/fp_arch.h6
-rw-r--r--include/musl_include_shims/libm.h270
-rw-r--r--include/stm32_hal_conf.h337
m---------lib/cmsis_core0
m---------lib/cmsis_device0
m---------lib/hal_driver0
m---------lib/musl0
-rw-r--r--src/bootloader.c99
-rw-r--r--src/clocks.c83
-rw-r--r--src/cobs.c211
-rw-r--r--src/interrupts.c62
-rw-r--r--src/main.c370
-rw-r--r--src/system_stm32f3xx.c298
-rw-r--r--startup_stm32f302x8.s414
-rw-r--r--stm32f302r8tx.ld201
-rw-r--r--tools/__pycache__/dsss_demod_test_waveform_gen.cpython-38.pycbin0 -> 3107 bytes
-rw-r--r--tools/__pycache__/presig_gen.cpython-38.pycbin0 -> 5250 bytes
-rw-r--r--tools/butter_filter_gen.py93
-rw-r--r--tools/crypto_test.c46
-rw-r--r--tools/crypto_test_runner.py46
-rw-r--r--tools/cwt_wavelet_header_gen.py29
-rw-r--r--tools/dsss_demod_test.c109
-rw-r--r--tools/dsss_demod_test_runner.py241
-rw-r--r--tools/dsss_demod_test_waveform_gen.py86
-rw-r--r--tools/e2e_test.c111
-rw-r--r--tools/fft_window_header_gen.py59
-rw-r--r--tools/fmeas_export_ocxo_2day.binbin0 -> 4908532 bytes
-rw-r--r--tools/freq_meas_test.c106
-rw-r--r--tools/freq_meas_test_runner.py39
-rw-r--r--tools/gold_code_header_gen.py70
-rw-r--r--tools/grid_freq_psd_spl_108pt.json1
-rw-r--r--tools/hum_generator.py111
-rw-r--r--tools/ldparser.py126
-rw-r--r--tools/linkmem.py276
-rw-r--r--tools/linksize.py62
-rw-r--r--tools/linktracer.py118
-rw-r--r--tools/mapparse.py129
-rw-r--r--tools/presig_gen.py141
-rw-r--r--tools/reed_solomon.py91
51 files changed, 4905 insertions, 0 deletions
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..3421536
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,12 @@
+[submodule "lib/cmsis_device"]
+ path = lib/cmsis_device
+ url = https://github.com/STMicroelectronics/cmsis_device_f3
+[submodule "lib/cmsis_core"]
+ path = lib/cmsis_core
+ url = https://github.com/STMicroelectronics/cmsis_core
+[submodule "lib/hal_driver"]
+ path = lib/hal_driver
+ url = https://github.com/STMicroelectronics/stm32f3xx_hal_driver
+[submodule "lib/musl"]
+ path = lib/musl
+ url = git://git.musl-libc.org/musl
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..d51d2c1
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,160 @@
+
+########################################################################################################################
+# Dependency directories
+########################################################################################################################
+
+CMSIS_DEVICE_DIR ?= lib/cmsis_device
+CMSIS_CORE_DIR ?= lib/cmsis_core
+HAL_DIR ?= lib/hal_driver
+MUSL_DIR ?= lib/musl
+
+########################################################################################################################
+# Sources
+########################################################################################################################
+
+C_SOURCES := src/main.c
+C_SOURCES += src/cobs.c
+C_SOURCES += src/clocks.c
+C_SOURCES += src/bootloader.c
+C_SOURCES += src/interrupts.c
+C_SOURCES += src/system_stm32f3xx.c
+C_SOURCES += config/fe_config.c
+
+MUSL_SOURCES += string/strlen.c
+
+C_SOURCES += $(addprefix $(MUSL_DIR)/src/,$(MUSL_SOURCES))
+
+CXX_SOURCES +=
+
+BUILDDIR ?= build
+BINARY := fenris_f302r8tx.elf
+LDSCRIPT := stm32f302r8tx.ld
+
+########################################################################################################################
+# Build parameters
+########################################################################################################################
+
+PREFIX ?= arm-none-eabi-
+
+DEBUG ?= 1
+
+CC := $(PREFIX)gcc
+CXX := $(PREFIX)g++
+LD := $(PREFIX)gcc
+AR := $(PREFIX)ar
+AS := $(PREFIX)as
+SIZE := $(PREFIX)size
+NM := $(PREFIX)nm
+OBJCOPY := $(PREFIX)objcopy
+OBJDUMP := $(PREFIX)objdump
+GDB := $(PREFIX)gdb
+
+HOST_CC ?= $(HOST_PREFIX)gcc
+HOST_CXX ?= $(HOST_PREFIX)g++
+HOST_LD ?= $(HOST_PREFIX)gcc
+HOST_AR ?= $(HOST_PREFIX)ar
+HOST_AS ?= $(HOST_PREFIX)as
+HOST_OBJCOPY ?= $(HOST_PREFIX)objcopy
+HOST_OBJDUMP ?= $(HOST_PREFIX)objdump
+
+PYTHON3 ?= python3
+DOT ?= dot
+
+CMSIS_DIR_ABS := $(abspath $(CMSIS_DIR))
+
+ARCH_FLAGS ?= -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16
+SYSTEM_FLAGS ?= -nostdlib -ffreestanding -nostartfiles
+
+CFLAGS += -Iinclude -Iconfig
+CFLAGS += -I$(BUILDDIR)
+CFLAGS += -I$(CMSIS_DEVICE_DIR)/Include -I$(CMSIS_CORE_DIR)/Include
+CFLAGS += -I$(abspath include/musl_include_shims)
+
+CFLAGS += -Os -std=gnu11 -g -DSTM32F302x8 -DSTM32F3 -DDEBUG=$(DEBUG)
+CFLAGS += $(ARCH_FLAGS) $(SYSTEM_FLAGS)
+CFLAGS += -fno-common -ffunction-sections -fdata-sections
+
+# for musl
+CFLAGS += -Dhidden=
+
+CXXFLAGS += -Os -g
+CXXFLAGS += $(ARCH_FLAGS) $(SYSTEM_FLAGS)
+CXXFLAGS += -fno-common -ffunction-sections -fdata-sections
+CXXFLAGS += -Wall -Wextra -Wshadow -Wundef -Wredundant-decls
+CXXFLAGS += -I.
+
+LDFLAGS += $(ARCH_FLAGS) $(SYSTEM_FLAGS)
+
+LIBS += -lgcc
+LDFLAGS += -Wl,--gc-sections
+
+LINKMEM_FLAGS ?= --trim-stubs=startup_stm32f302x8.o --trace-sections .isr_vector --highlight-subdirs $(BUILDDIR)
+
+OBJS := $(addprefix $(BUILDDIR)/,$(C_SOURCES:.c=.o) $(CXX_SOURCES:.cpp=.o))
+
+ALL_OBJS := $(OBJS)
+ALL_OBJS += $(BUILDDIR)/startup_stm32f302x8.o
+
+########################################################################################################################
+# Rules
+########################################################################################################################
+
+all: binsize
+
+.PHONY: binsize
+binsize: $(BUILDDIR)/$(BINARY) $(BUILDDIR)/$(BINARY:.elf=-symbol-sizes.pdf)
+ $(LD) -T$(LDSCRIPT) $(LDFLAGS) -Wl,--print-memory-usage -o /dev/null $(ALL_OBJS) $(LIBS)
+ @echo
+ @echo "▐▬▬▬▌ SyMbOL sIzE HiGhScORe LiSt ▐▬▬▬▌"
+ $(NM) --print-size --size-sort --radix=d $< | tail -n 20
+
+$(BUILDDIR)/generated: ; mkdir -p $@
+
+.PRECIOUS: $(BUILDDIR)/$(BINARY)
+$(BUILDDIR)/$(BINARY) $(BUILDDIR)/$(BINARY:.elf=.map) &: $(ALL_OBJS)
+ $(LD) -T$(LDSCRIPT) $(LDFLAGS) -o $@ -Wl,-Map=$(BUILDDIR)/$(BINARY:.elf=.map) $^ $(LIBS)
+
+build/$(BINARY:.elf=-symbol-sizes.dot): $(ALL_OBJS)
+ $(PYTHON3) tools/linkmem.py $(LINKMEM_FLAGS) $(LD) -T$(LDSCRIPT) $(LDFLAGS) $^ $(LIBS) > $@
+
+%.pdf: %.dot
+ $(DOT) -T pdf $< -o $@
+
+%.dot: %.elf
+ r2 -a arm -qc 'aa;agRd' $< 2>/dev/null >$@
+
+$(BUILDDIR)/%.o: %.s
+ mkdir -p $(@D)
+ $(CC) $(COMMON_CFLAGS) $(CFLAGS) $(INT_CFLAGS) -o $@ -c $<
+
+$(BUILDDIR)/src/%.o: src/%.c
+ mkdir -p $(@D)
+ $(CC) $(COMMON_CFLAGS) $(CFLAGS) $(INT_CFLAGS) -o $@ -c $<
+
+$(BUILDDIR)/src/%.o: src/%.cpp
+ mkdir -p $(@D)
+ $(CXX) $(CXXFLAGS) -o $@ -c $<
+
+$(BUILDDIR)/generated/%.o: $(BUILDDIR)/generated/%.c
+ mkdir -p $(@D)
+ $(CC) $(COMMON_CFLAGS) $(CFLAGS) $(INT_CFLAGS) -o $@ -c $<
+
+$(BUILDDIR)/%.o: %.c
+ mkdir -p $(@D)
+ $(CC) $(COMMON_CFLAGS) $(CFLAGS) $(EXT_CFLAGS) -o $@ -c $<
+
+clean:
+ rm -rf $(BUILDDIR)/src
+ rm -rf $(BUILDDIR)/generated
+ rm -f $(BUILDDIR)/$(BINARY)
+ rm -f $(BUILDDIR)/$(BINARY:.elf=.map)
+ rm -f $(BUILDDIR)/$(BINARY:.elf=-symbol-sizes.dot)
+ rm -f $(BUILDDIR)/$(BINARY:.elf=-symbol-sizes.pdf)
+ rm -f $(BUILDDIR)/tools/freq_meas_test
+
+mrproper: clean
+ rm -rf build
+
+.PHONY: clean mrproper
+
+-include $(OBJS:.o=.d)
diff --git a/config/fe_config.c b/config/fe_config.c
new file mode 100644
index 0000000..f486cf0
--- /dev/null
+++ b/config/fe_config.c
@@ -0,0 +1,17 @@
+#ifndef __FE_CONFIG_H__
+#define __FE_CONFIG_H__
+
+#include <fe_config_backend.h>
+
+const struct fe_config_def fe_config = {
+ .bootloader_enable_pin = { FE_CONFIG_GPIOB, 0 },
+ .bootloader_enable_level = 1,
+ .signature_disable_pin = { FE_CONFIG_GPIOB, 1 },
+ .signature_disable_level = 1,
+ .usart = FE_CONFIG_USART1_PB7,
+ .baudrate = 115200,
+ /* The following string happens to be a valid COBS frame. */
+ .welcome_string = "Fenris Bootloader\r\n(c) 2020 jaseg\r\nSee https://git.jaseg.de/fenris \r\n",
+};
+
+#endif /* __FE_CONFIG_H__ */
diff --git a/include/bootloader.h b/include/bootloader.h
new file mode 100644
index 0000000..c1b9820
--- /dev/null
+++ b/include/bootloader.h
@@ -0,0 +1,22 @@
+#ifndef __FE_BOOTLOADER_H__
+#define __FE_BOOTLOADER_H__
+
+#include <fe_global.h>
+
+void fe_jump_to_application(void) __attribute__ ((noreturn));
+void fe_system_reset(void) __attribute__ ((noreturn));
+bool fe_check_img_valid(void);
+
+void flash_unlock(void);
+void flash_lock(void);
+int flash_erase_page(size_t addr);
+int flash_write(size_t addr, char *buf, size_t len);
+int erase_user_flash(void);
+
+#define PAGE_SIZE 0x2000
+
+extern size_t flash_base;
+extern size_t flash_size;
+extern size_t bootloader_size;
+
+#endif /* __FE_BOOTLOADER_H__ */
diff --git a/include/cobs.h b/include/cobs.h
new file mode 100644
index 0000000..8c4f429
--- /dev/null
+++ b/include/cobs.h
@@ -0,0 +1,23 @@
+#ifndef __COBS_H__
+#define __COBS_H__
+
+#include <stdint.h>
+#include <unistd.h>
+#include <string.h>
+
+
+struct cobs_decode_state {
+ size_t p;
+ size_t c;
+};
+
+
+ssize_t cobs_encode(char *dst, size_t dstlen, char *src, size_t srclen);
+ssize_t cobs_decode(char *dst, size_t dstlen, char *src, size_t srclen);
+
+int cobs_encode_usart(int (*output)(void*, char), void *userdata, char *src, size_t srclen);
+
+void cobs_decode_incremental_initialize(struct cobs_decode_state *state);
+int cobs_decode_incremental(struct cobs_decode_state *state, char *dst, size_t dstlen, char src);
+
+#endif//__COBS_H__
diff --git a/include/fe_clocks.h b/include/fe_clocks.h
new file mode 100644
index 0000000..681feae
--- /dev/null
+++ b/include/fe_clocks.h
@@ -0,0 +1,14 @@
+#ifndef __FE_CLOCKS_H__
+#define __FE_CLOCKS_H__
+
+extern unsigned int sysclk_speed;
+extern unsigned int ahb_speed;
+extern unsigned int apb1_speed;
+extern unsigned int apb2_speed;
+extern unsigned int apb1_timer_speed;
+extern unsigned int apb2_timer_speed;
+
+void fe_config_clocks(void);
+void delay_ms(int ms);
+
+#endif /* __FE_CLOCKS_H__ */
diff --git a/include/fe_config_backend.h b/include/fe_config_backend.h
new file mode 100644
index 0000000..e0d6690
--- /dev/null
+++ b/include/fe_config_backend.h
@@ -0,0 +1,40 @@
+#ifndef __FE_CONFIG_BACKEND_H__
+#define __FE_CONFIG_BACKEND_H__
+
+#include <fe_global.h>
+
+#define FE_CONFIG_GPIOA RCC_AHBENR_GPIOAEN, GPIOA
+#define FE_CONFIG_GPIOB RCC_AHBENR_GPIOBEN, GPIOB
+#define FE_CONFIG_GPIOC RCC_AHBENR_GPIOCEN, GPIOC
+#define FE_CONFIG_GPIOD RCC_AHBENR_GPIODEN, GPIOD
+#define FE_CONFIG_GPIOF RCC_AHBENR_GPIOFEN, GPIOF
+
+enum fe_config_usart {
+ FE_CONFIG_USART1_PB7,
+ FE_CONFIG_USART_COUNT
+};
+
+struct fe_config_gpiodef {
+ uint32_t rcc_ahbenr_flags;
+ GPIO_TypeDef *gpio;
+ int pin_number;
+};
+
+struct fe_config_def {
+ struct fe_config_gpiodef bootloader_enable_pin;
+ int bootloader_enable_level;
+
+ struct fe_config_gpiodef signature_disable_pin;
+ int signature_disable_level;
+
+ enum fe_config_usart usart;
+ int baudrate;
+
+ const char *welcome_string;
+};
+
+extern const struct fe_config_def fe_config;
+
+void gpio_config(GPIO_TypeDef *gpio, int pin, int mode, int speed, int pullups, int alt);
+
+#endif /* __FE_CONFIG_BACKEND_H__ */
diff --git a/include/fe_global.h b/include/fe_global.h
new file mode 100644
index 0000000..78a269f
--- /dev/null
+++ b/include/fe_global.h
@@ -0,0 +1,19 @@
+#ifndef __FE_GLOBAL_H__
+#define __FE_GLOBAL_H__
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <assert.h>
+#include <sys/types.h>
+
+#include <stm32f302x8.h>
+
+#define UNUSED(x) ((void) x)
+#define ARRAY_LENGTH(x) (sizeof(x) / sizeof(x[0]))
+#define unused_a __attribute__((unused))
+
+extern uint64_t sys_time_millis;
+
+void __libc_init_array(void);
+
+#endif /* __FE_GLOBAL_H__ */
diff --git a/include/fe_interrupts.h b/include/fe_interrupts.h
new file mode 100644
index 0000000..9a85fe0
--- /dev/null
+++ b/include/fe_interrupts.h
@@ -0,0 +1,14 @@
+#ifndef __FE_INTERRUPTS_H__
+#define __FE_INTERRUPTS_H__
+
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void MemManage_Handler(void);
+void BusFault_Handler(void);
+void UsageFault_Handler(void);
+void SVC_Handler(void);
+void DebugMon_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+
+#endif /* __FE_INTERRUPTS_H__ */
diff --git a/include/musl_include_shims/bits/alltypes.h b/include/musl_include_shims/bits/alltypes.h
new file mode 100644
index 0000000..581ca85
--- /dev/null
+++ b/include/musl_include_shims/bits/alltypes.h
@@ -0,0 +1,23 @@
+
+/* shim file for musl */
+
+#ifndef __MUSL_SHIM_BITS_ALLTYPES_H__
+#define __MUSL_SHIM_BITS_ALLTYPES_H__
+
+#define _REDIR_TIME64 1
+#define _Addr int
+#define _Int64 long long
+#define _Reg int
+
+#define __BYTE_ORDER 1234
+
+#define __LONG_MAX 0x7fffffffL
+
+#ifndef __cplusplus
+typedef unsigned wchar_t;
+#endif
+
+typedef float float_t;
+typedef double double_t;
+
+#endif /* __MUSL_SHIM_BITS_ALLTYPES_H__ */
diff --git a/include/musl_include_shims/endian.h b/include/musl_include_shims/endian.h
new file mode 100644
index 0000000..172c432
--- /dev/null
+++ b/include/musl_include_shims/endian.h
@@ -0,0 +1,80 @@
+#ifndef _ENDIAN_H
+#define _ENDIAN_H
+
+#include <features.h>
+
+#define __NEED_uint16_t
+#define __NEED_uint32_t
+#define __NEED_uint64_t
+
+#include <bits/alltypes.h>
+
+#define __PDP_ENDIAN 3412
+
+#define BIG_ENDIAN __BIG_ENDIAN
+#define LITTLE_ENDIAN __LITTLE_ENDIAN
+#define PDP_ENDIAN __PDP_ENDIAN
+#define BYTE_ORDER __BYTE_ORDER
+
+static __inline uint16_t __bswap16(uint16_t __x)
+{
+ return __x<<8 | __x>>8;
+}
+
+static __inline uint32_t __bswap32(uint32_t __x)
+{
+ return __x>>24 | __x>>8&0xff00 | __x<<8&0xff0000 | __x<<24;
+}
+
+static __inline uint64_t __bswap64(uint64_t __x)
+{
+ return __bswap32(__x)+0ULL<<32 | __bswap32(__x>>32);
+}
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define htobe16(x) __bswap16(x)
+#define be16toh(x) __bswap16(x)
+#define htobe32(x) __bswap32(x)
+#define be32toh(x) __bswap32(x)
+#define htobe64(x) __bswap64(x)
+#define be64toh(x) __bswap64(x)
+#define htole16(x) (uint16_t)(x)
+#define le16toh(x) (uint16_t)(x)
+#define htole32(x) (uint32_t)(x)
+#define le32toh(x) (uint32_t)(x)
+#define htole64(x) (uint64_t)(x)
+#define le64toh(x) (uint64_t)(x)
+#else
+#define htobe16(x) (uint16_t)(x)
+#define be16toh(x) (uint16_t)(x)
+#define htobe32(x) (uint32_t)(x)
+#define be32toh(x) (uint32_t)(x)
+#define htobe64(x) (uint64_t)(x)
+#define be64toh(x) (uint64_t)(x)
+#define htole16(x) __bswap16(x)
+#define le16toh(x) __bswap16(x)
+#define htole32(x) __bswap32(x)
+#define le32toh(x) __bswap32(x)
+#define htole64(x) __bswap64(x)
+#define le64toh(x) __bswap64(x)
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define betoh16(x) __bswap16(x)
+#define betoh32(x) __bswap32(x)
+#define betoh64(x) __bswap64(x)
+#define letoh16(x) (uint16_t)(x)
+#define letoh32(x) (uint32_t)(x)
+#define letoh64(x) (uint64_t)(x)
+#else
+#define betoh16(x) (uint16_t)(x)
+#define betoh32(x) (uint32_t)(x)
+#define betoh64(x) (uint64_t)(x)
+#define letoh16(x) __bswap16(x)
+#define letoh32(x) __bswap32(x)
+#define letoh64(x) __bswap64(x)
+#endif
+#endif
+
+#endif
diff --git a/include/musl_include_shims/features.h b/include/musl_include_shims/features.h
new file mode 100644
index 0000000..85cfb72
--- /dev/null
+++ b/include/musl_include_shims/features.h
@@ -0,0 +1,40 @@
+#ifndef _FEATURES_H
+#define _FEATURES_H
+
+#if defined(_ALL_SOURCE) && !defined(_GNU_SOURCE)
+#define _GNU_SOURCE 1
+#endif
+
+#if defined(_DEFAULT_SOURCE) && !defined(_BSD_SOURCE)
+#define _BSD_SOURCE 1
+#endif
+
+#if !defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) \
+ && !defined(_XOPEN_SOURCE) && !defined(_GNU_SOURCE) \
+ && !defined(_BSD_SOURCE) && !defined(__STRICT_ANSI__)
+#define _BSD_SOURCE 1
+#define _XOPEN_SOURCE 700
+#endif
+
+#if __STDC_VERSION__ >= 199901L
+#define __restrict restrict
+#elif !defined(__GNUC__)
+#define __restrict
+#endif
+
+#if __STDC_VERSION__ >= 199901L || defined(__cplusplus)
+#define __inline inline
+#elif !defined(__GNUC__)
+#define __inline
+#endif
+
+#if __STDC_VERSION__ >= 201112L
+#elif defined(__GNUC__)
+#define _Noreturn __attribute__((__noreturn__))
+#else
+#define _Noreturn
+#endif
+
+#define __REDIR(x,y) __typeof__(x) x __asm__(#y)
+
+#endif
diff --git a/include/musl_include_shims/fp_arch.h b/include/musl_include_shims/fp_arch.h
new file mode 100644
index 0000000..f5bab6d
--- /dev/null
+++ b/include/musl_include_shims/fp_arch.h
@@ -0,0 +1,6 @@
+#ifndef __MUSL_SHIM_FP_ARCH_H__
+#define __MUSL_SHIM_FP_ARCH_H__
+
+#define hidden
+
+#endif /* __MUSL_SHIM_FP_ARCH_H__ */
diff --git a/include/musl_include_shims/libm.h b/include/musl_include_shims/libm.h
new file mode 100644
index 0000000..d48135d
--- /dev/null
+++ b/include/musl_include_shims/libm.h
@@ -0,0 +1,270 @@
+#ifndef _LIBM_H
+#define _LIBM_H
+
+#include <stdint.h>
+#include <float.h>
+#include <math.h>
+#include <endian.h>
+#include "fp_arch.h"
+
+#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
+#elif LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384 && __BYTE_ORDER == __LITTLE_ENDIAN
+union ldshape {
+ long double f;
+ struct {
+ uint64_t m;
+ uint16_t se;
+ } i;
+};
+#elif LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384 && __BYTE_ORDER == __BIG_ENDIAN
+/* This is the m68k variant of 80-bit long double, and this definition only works
+ * on archs where the alignment requirement of uint64_t is <= 4. */
+union ldshape {
+ long double f;
+ struct {
+ uint16_t se;
+ uint16_t pad;
+ uint64_t m;
+ } i;
+};
+#elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384 && __BYTE_ORDER == __LITTLE_ENDIAN
+union ldshape {
+ long double f;
+ struct {
+ uint64_t lo;
+ uint32_t mid;
+ uint16_t top;
+ uint16_t se;
+ } i;
+ struct {
+ uint64_t lo;
+ uint64_t hi;
+ } i2;
+};
+#elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384 && __BYTE_ORDER == __BIG_ENDIAN
+union ldshape {
+ long double f;
+ struct {
+ uint16_t se;
+ uint16_t top;
+ uint32_t mid;
+ uint64_t lo;
+ } i;
+ struct {
+ uint64_t hi;
+ uint64_t lo;
+ } i2;
+};
+#else
+#error Unsupported long double representation
+#endif
+
+/* Support non-nearest rounding mode. */
+#define WANT_ROUNDING 1
+/* Support signaling NaNs. */
+#define WANT_SNAN 0
+
+#if WANT_SNAN
+#error SNaN is unsupported
+#else
+#define issignalingf_inline(x) 0
+#define issignaling_inline(x) 0
+#endif
+
+#ifndef TOINT_INTRINSICS
+#define TOINT_INTRINSICS 0
+#endif
+
+#if TOINT_INTRINSICS
+/* Round x to nearest int in all rounding modes, ties have to be rounded
+ consistently with converttoint so the results match. If the result
+ would be outside of [-2^31, 2^31-1] then the semantics is unspecified. */
+static double_t roundtoint(double_t);
+
+/* Convert x to nearest int in all rounding modes, ties have to be rounded
+ consistently with roundtoint. If the result is not representible in an
+ int32_t then the semantics is unspecified. */
+static int32_t converttoint(double_t);
+#endif
+
+/* Helps static branch prediction so hot path can be better optimized. */
+#ifdef __GNUC__
+#define predict_true(x) __builtin_expect(!!(x), 1)
+#define predict_false(x) __builtin_expect(x, 0)
+#else
+#define predict_true(x) (x)
+#define predict_false(x) (x)
+#endif
+
+/* Evaluate an expression as the specified type. With standard excess
+ precision handling a type cast or assignment is enough (with
+ -ffloat-store an assignment is required, in old compilers argument
+ passing and return statement may not drop excess precision). */
+
+static inline float eval_as_float(float x)
+{
+ float y = x;
+ return y;
+}
+
+static inline double eval_as_double(double x)
+{
+ double y = x;
+ return y;
+}
+
+/* fp_barrier returns its input, but limits code transformations
+ as if it had a side-effect (e.g. observable io) and returned
+ an arbitrary value. */
+
+#ifndef fp_barrierf
+#define fp_barrierf fp_barrierf
+static inline float fp_barrierf(float x)
+{
+ volatile float y = x;
+ return y;
+}
+#endif
+
+#ifndef fp_barrier
+#define fp_barrier fp_barrier
+static inline double fp_barrier(double x)
+{
+ volatile double y = x;
+ return y;
+}
+#endif
+
+#ifndef fp_barrierl
+#define fp_barrierl fp_barrierl
+static inline long double fp_barrierl(long double x)
+{
+ volatile long double y = x;
+ return y;
+}
+#endif
+
+/* fp_force_eval ensures that the input value is computed when that's
+ otherwise unused. To prevent the constant folding of the input
+ expression, an additional fp_barrier may be needed or a compilation
+ mode that does so (e.g. -frounding-math in gcc). Then it can be
+ used to evaluate an expression for its fenv side-effects only. */
+
+#ifndef fp_force_evalf
+#define fp_force_evalf fp_force_evalf
+static inline void fp_force_evalf(float x)
+{
+ volatile float y;
+ y = x;
+}
+#endif
+
+#ifndef fp_force_eval
+#define fp_force_eval fp_force_eval
+static inline void fp_force_eval(double x)
+{
+ volatile double y;
+ y = x;
+}
+#endif
+
+#ifndef fp_force_evall
+#define fp_force_evall fp_force_evall
+static inline void fp_force_evall(long double x)
+{
+ volatile long double y;
+ y = x;
+}
+#endif
+
+#define FORCE_EVAL(x) do { \
+ if (sizeof(x) == sizeof(float)) { \
+ fp_force_evalf(x); \
+ } else if (sizeof(x) == sizeof(double)) { \
+ fp_force_eval(x); \
+ } else { \
+ fp_force_evall(x); \
+ } \
+} while(0)
+
+#define asuint(f) ((union{float _f; uint32_t _i;}){f})._i
+#define asfloat(i) ((union{uint32_t _i; float _f;}){i})._f
+#define asuint64(f) ((union{double _f; uint64_t _i;}){f})._i
+#define asdouble(i) ((union{uint64_t _i; double _f;}){i})._f
+
+#define EXTRACT_WORDS(hi,lo,d) \
+do { \
+ uint64_t __u = asuint64(d); \
+ (hi) = __u >> 32; \
+ (lo) = (uint32_t)__u; \
+} while (0)
+
+#define GET_HIGH_WORD(hi,d) \
+do { \
+ (hi) = asuint64(d) >> 32; \
+} while (0)
+
+#define GET_LOW_WORD(lo,d) \
+do { \
+ (lo) = (uint32_t)asuint64(d); \
+} while (0)
+
+#define INSERT_WORDS(d,hi,lo) \
+do { \
+ (d) = asdouble(((uint64_t)(hi)<<32) | (uint32_t)(lo)); \
+} while (0)
+
+#define SET_HIGH_WORD(d,hi) \
+ INSERT_WORDS(d, hi, (uint32_t)asuint64(d))
+
+#define SET_LOW_WORD(d,lo) \
+ INSERT_WORDS(d, asuint64(d)>>32, lo)
+
+#define GET_FLOAT_WORD(w,d) \
+do { \
+ (w) = asuint(d); \
+} while (0)
+
+#define SET_FLOAT_WORD(d,w) \
+do { \
+ (d) = asfloat(w); \
+} while (0)
+
+hidden int __rem_pio2_large(double*,double*,int,int,int);
+
+hidden int __rem_pio2(double,double*);
+hidden double __sin(double,double,int);
+hidden double __cos(double,double);
+hidden double __tan(double,double,int);
+hidden double __expo2(double);
+
+hidden int __rem_pio2f(float,double*);
+hidden float __sindf(double);
+hidden float __cosdf(double);
+hidden float __tandf(double,int);
+hidden float __expo2f(float);
+
+hidden int __rem_pio2l(long double, long double *);
+hidden long double __sinl(long double, long double, int);
+hidden long double __cosl(long double, long double);
+hidden long double __tanl(long double, long double, int);
+
+hidden long double __polevll(long double, const long double *, int);
+hidden long double __p1evll(long double, const long double *, int);
+
+hidden double __lgamma_r(double, int *);
+hidden float __lgammaf_r(float, int *);
+
+/* error handling functions */
+hidden float __math_xflowf(uint32_t, float);
+hidden float __math_uflowf(uint32_t);
+hidden float __math_oflowf(uint32_t);
+hidden float __math_divzerof(uint32_t);
+hidden float __math_invalidf(float);
+hidden double __math_xflow(uint32_t, double);
+hidden double __math_uflow(uint32_t);
+hidden double __math_oflow(uint32_t);
+hidden double __math_divzero(uint32_t);
+hidden double __math_invalid(double);
+
+#endif
diff --git a/include/stm32_hal_conf.h b/include/stm32_hal_conf.h
new file mode 100644
index 0000000..0b5d0c3
--- /dev/null
+++ b/include/stm32_hal_conf.h
@@ -0,0 +1,337 @@
+/**
+ ******************************************************************************
+ * @file stm32f3xx_hal_conf.h
+ * @author MCD Application Team
+ * @brief HAL configuration file.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F3xx_HAL_CONF_H
+#define __STM32F3xx_HAL_CONF_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+
+/* ########################## Module Selection ############################## */
+/**
+ * @brief This is the list of modules to be used in the HAL driver
+ */
+#define HAL_MODULE_ENABLED
+// #define HAL_ADC_MODULE_ENABLED
+// #define HAL_CAN_MODULE_ENABLED
+/* #define HAL_CAN_LEGACY_MODULE_ENABLED */
+// #define HAL_CEC_MODULE_ENABLED
+// #define HAL_COMP_MODULE_ENABLED
+// #define HAL_CORTEX_MODULE_ENABLED
+// #define HAL_CRC_MODULE_ENABLED
+// #define HAL_DAC_MODULE_ENABLED
+// #define HAL_DMA_MODULE_ENABLED
+#define HAL_FLASH_MODULE_ENABLED
+// #define HAL_GPIO_MODULE_ENABLED
+// #define HAL_EXTI_MODULE_ENABLED
+// #define HAL_HRTIM_MODULE_ENABLED
+// #define HAL_I2C_MODULE_ENABLED
+// #define HAL_I2S_MODULE_ENABLED
+// #define HAL_IRDA_MODULE_ENABLED
+// #define HAL_IWDG_MODULE_ENABLED
+// #define HAL_OPAMP_MODULE_ENABLED
+// #define HAL_PCD_MODULE_ENABLED
+// #define HAL_PWR_MODULE_ENABLED
+// #define HAL_RCC_MODULE_ENABLED
+// #define HAL_RTC_MODULE_ENABLED
+// #define HAL_SDADC_MODULE_ENABLED
+// #define HAL_SMARTCARD_MODULE_ENABLED
+// #define HAL_SMBUS_MODULE_ENABLED
+// #define HAL_SPI_MODULE_ENABLED
+// #define HAL_TIM_MODULE_ENABLED
+// #define HAL_TSC_MODULE_ENABLED
+// #define HAL_UART_MODULE_ENABLED
+// #define HAL_USART_MODULE_ENABLED
+// #define HAL_WWDG_MODULE_ENABLED
+
+/* ########################## HSE/HSI Values adaptation ##################### */
+/**
+ * @brief Adjust the value of External High Speed oscillator (HSE) used in your application.
+ * This value is used by the RCC HAL module to compute the system frequency
+ * (when HSE is used as system clock source, directly or through the PLL).
+ */
+#if !defined (HSE_VALUE)
+ #define HSE_VALUE (8000000U) /*!< Value of the External oscillator in Hz */
+#endif /* HSE_VALUE */
+
+/**
+ * @brief In the following line adjust the External High Speed oscillator (HSE) Startup
+ * Timeout value
+ */
+#if !defined (HSE_STARTUP_TIMEOUT)
+ #define HSE_STARTUP_TIMEOUT (100U) /*!< Time out for HSE start up, in ms */
+#endif /* HSE_STARTUP_TIMEOUT */
+
+/**
+ * @brief Internal High Speed oscillator (HSI) value.
+ * This value is used by the RCC HAL module to compute the system frequency
+ * (when HSI is used as system clock source, directly or through the PLL).
+ */
+#if !defined (HSI_VALUE)
+ #define HSI_VALUE (8000000U) /*!< Value of the Internal oscillator in Hz*/
+#endif /* HSI_VALUE */
+
+/**
+ * @brief In the following line adjust the Internal High Speed oscillator (HSI) Startup
+ * Timeout value
+ */
+#if !defined (HSI_STARTUP_TIMEOUT)
+ #define HSI_STARTUP_TIMEOUT (5000U) /*!< Time out for HSI start up */
+#endif /* HSI_STARTUP_TIMEOUT */
+
+/**
+ * @brief Internal Low Speed oscillator (LSI) value.
+ */
+#if !defined (LSI_VALUE)
+ #define LSI_VALUE (40000U)
+#endif /* LSI_VALUE */ /*!< Value of the Internal Low Speed oscillator in Hz
+ The real value may vary depending on the variations
+ in voltage and temperature. */
+/**
+ * @brief External Low Speed oscillator (LSE) value.
+ */
+#if !defined (LSE_VALUE)
+ #define LSE_VALUE (32768U) /*!< Value of the External Low Speed oscillator in Hz */
+#endif /* LSE_VALUE */
+
+/**
+ * @brief Time out for LSE start up value in ms.
+ */
+#if !defined (LSE_STARTUP_TIMEOUT)
+ #define LSE_STARTUP_TIMEOUT (5000U) /*!< Time out for LSE start up, in ms */
+#endif /* LSE_STARTUP_TIMEOUT */
+
+/**
+ * @brief External clock source for I2S peripheral
+ * This value is used by the I2S HAL module to compute the I2S clock source
+ * frequency, this source is inserted directly through I2S_CKIN pad.
+ * - External clock generated through external PLL component on EVAL 303 (based on MCO or crystal)
+ * - External clock not generated on EVAL 373
+ */
+#if !defined (EXTERNAL_CLOCK_VALUE)
+ #define EXTERNAL_CLOCK_VALUE (8000000U) /*!< Value of the External oscillator in Hz*/
+#endif /* EXTERNAL_CLOCK_VALUE */
+
+/* Tip: To avoid modifying this file each time you need to use different HSE,
+ === you can define the HSE value in your toolchain compiler preprocessor. */
+
+/* ########################### System Configuration ######################### */
+/**
+ * @brief This is the HAL system configuration section
+ */
+#define VDD_VALUE (3300U) /*!< Value of VDD in mv */
+#define TICK_INT_PRIORITY ((uint32_t)(1U<<__NVIC_PRIO_BITS) - 1U) /*!< tick interrupt priority (lowest by default) */
+#define USE_RTOS 0U
+#define PREFETCH_ENABLE 1U
+#define INSTRUCTION_CACHE_ENABLE 0U
+#define DATA_CACHE_ENABLE 0U
+#define USE_SPI_CRC 1U
+
+#define USE_HAL_ADC_REGISTER_CALLBACKS 0U /* ADC register callback disabled */
+#define USE_HAL_CAN_REGISTER_CALLBACKS 0U /* CAN register callback disabled */
+#define USE_HAL_COMP_REGISTER_CALLBACKS 0U /* COMP register callback disabled */
+#define USE_HAL_CEC_REGISTER_CALLBACKS 0U /* CEC register callback disabled */
+#define USE_HAL_DAC_REGISTER_CALLBACKS 0U /* DAC register callback disabled */
+#define USE_HAL_SRAM_REGISTER_CALLBACKS 0U /* SRAM register callback disabled */
+#define USE_HAL_SMBUS_REGISTER_CALLBACKS 0U /* SMBUS register callback disabled */
+#define USE_HAL_SDADC_REGISTER_CALLBACKS 0U /* SDADC register callback disabled */
+#define USE_HAL_NAND_REGISTER_CALLBACKS 0U /* NAND register callback disabled */
+#define USE_HAL_NOR_REGISTER_CALLBACKS 0U /* NOR register callback disabled */
+#define USE_HAL_PCCARD_REGISTER_CALLBACKS 0U /* PCCARD register callback disabled */
+#define USE_HAL_HRTIM_REGISTER_CALLBACKS 0U /* HRTIM register callback disabled */
+#define USE_HAL_I2C_REGISTER_CALLBACKS 0U /* I2C register callback disabled */
+#define USE_HAL_UART_REGISTER_CALLBACKS 0U /* UART register callback disabled */
+#define USE_HAL_USART_REGISTER_CALLBACKS 0U /* USART register callback disabled */
+#define USE_HAL_IRDA_REGISTER_CALLBACKS 0U /* IRDA register callback disabled */
+#define USE_HAL_SMARTCARD_REGISTER_CALLBACKS 0U /* SMARTCARD register callback disabled */
+#define USE_HAL_WWDG_REGISTER_CALLBACKS 0U /* WWDG register callback disabled */
+#define USE_HAL_OPAMP_REGISTER_CALLBACKS 0U /* OPAMP register callback disabled */
+#define USE_HAL_RTC_REGISTER_CALLBACKS 0U /* RTC register callback disabled */
+#define USE_HAL_SPI_REGISTER_CALLBACKS 0U /* SPI register callback disabled */
+#define USE_HAL_I2S_REGISTER_CALLBACKS 0U /* I2S register callback disabled */
+#define USE_HAL_TIM_REGISTER_CALLBACKS 0U /* TIM register callback disabled */
+#define USE_HAL_TSC_REGISTER_CALLBACKS 0U /* TSC register callback disabled */
+#define USE_HAL_PCD_REGISTER_CALLBACKS 0U /* PCD register callback disabled */
+
+/* ########################## Assert Selection ############################## */
+/**
+ * @brief Uncomment the line below to expanse the "assert_param" macro in the
+ * HAL drivers code
+ */
+/*#define USE_FULL_ASSERT 1*/
+
+/* Includes ------------------------------------------------------------------*/
+/**
+ * @brief Include module's header file
+ */
+
+#ifdef HAL_RCC_MODULE_ENABLED
+ #include "stm32f3xx_hal_rcc.h"
+#endif /* HAL_RCC_MODULE_ENABLED */
+
+#ifdef HAL_GPIO_MODULE_ENABLED
+ #include "stm32f3xx_hal_gpio.h"
+#endif /* HAL_GPIO_MODULE_ENABLED */
+
+#ifdef HAL_EXTI_MODULE_ENABLED
+ #include "stm32f3xx_hal_exti.h"
+#endif /* HAL_EXTI_MODULE_ENABLED */
+
+#ifdef HAL_DMA_MODULE_ENABLED
+ #include "stm32f3xx_hal_dma.h"
+#endif /* HAL_DMA_MODULE_ENABLED */
+
+#ifdef HAL_CORTEX_MODULE_ENABLED
+ #include "stm32f3xx_hal_cortex.h"
+#endif /* HAL_CORTEX_MODULE_ENABLED */
+
+#ifdef HAL_ADC_MODULE_ENABLED
+ #include "stm32f3xx_hal_adc.h"
+#endif /* HAL_ADC_MODULE_ENABLED */
+
+#ifdef HAL_CAN_MODULE_ENABLED
+ #include "stm32f3xx_hal_can.h"
+#endif /* HAL_CAN_MODULE_ENABLED */
+
+#ifdef HAL_CAN_LEGACY_MODULE_ENABLED
+ #include "stm32f3xx_hal_can_legacy.h"
+#endif /* HAL_CAN_LEGACY_MODULE_ENABLED */
+
+#ifdef HAL_CEC_MODULE_ENABLED
+ #include "stm32f3xx_hal_cec.h"
+#endif /* HAL_CEC_MODULE_ENABLED */
+
+#ifdef HAL_COMP_MODULE_ENABLED
+ #include "stm32f3xx_hal_comp.h"
+#endif /* HAL_COMP_MODULE_ENABLED */
+
+#ifdef HAL_CRC_MODULE_ENABLED
+ #include "stm32f3xx_hal_crc.h"
+#endif /* HAL_CRC_MODULE_ENABLED */
+
+#ifdef HAL_DAC_MODULE_ENABLED
+ #include "stm32f3xx_hal_dac.h"
+#endif /* HAL_DAC_MODULE_ENABLED */
+
+#ifdef HAL_FLASH_MODULE_ENABLED
+ #include "stm32f3xx_hal_flash.h"
+#endif /* HAL_FLASH_MODULE_ENABLED */
+
+#ifdef HAL_HRTIM_MODULE_ENABLED
+ #include "stm32f3xx_hal_hrtim.h"
+#endif /* HAL_HRTIM_MODULE_ENABLED */
+
+#ifdef HAL_I2C_MODULE_ENABLED
+ #include "stm32f3xx_hal_i2c.h"
+#endif /* HAL_I2C_MODULE_ENABLED */
+
+#ifdef HAL_I2S_MODULE_ENABLED
+ #include "stm32f3xx_hal_i2s.h"
+#endif /* HAL_I2S_MODULE_ENABLED */
+
+#ifdef HAL_IRDA_MODULE_ENABLED
+ #include "stm32f3xx_hal_irda.h"
+#endif /* HAL_IRDA_MODULE_ENABLED */
+
+#ifdef HAL_IWDG_MODULE_ENABLED
+ #include "stm32f3xx_hal_iwdg.h"
+#endif /* HAL_IWDG_MODULE_ENABLED */
+
+#ifdef HAL_OPAMP_MODULE_ENABLED
+ #include "stm32f3xx_hal_opamp.h"
+#endif /* HAL_OPAMP_MODULE_ENABLED */
+
+#ifdef HAL_PCD_MODULE_ENABLED
+ #include "stm32f3xx_hal_pcd.h"
+#endif /* HAL_PCD_MODULE_ENABLED */
+
+#ifdef HAL_PWR_MODULE_ENABLED
+ #include "stm32f3xx_hal_pwr.h"
+#endif /* HAL_PWR_MODULE_ENABLED */
+
+#ifdef HAL_RTC_MODULE_ENABLED
+ #include "stm32f3xx_hal_rtc.h"
+#endif /* HAL_RTC_MODULE_ENABLED */
+
+#ifdef HAL_SDADC_MODULE_ENABLED
+ #include "stm32f3xx_hal_sdadc.h"
+#endif /* HAL_SDADC_MODULE_ENABLED */
+
+#ifdef HAL_SMARTCARD_MODULE_ENABLED
+ #include "stm32f3xx_hal_smartcard.h"
+#endif /* HAL_SMARTCARD_MODULE_ENABLED */
+
+#ifdef HAL_SMBUS_MODULE_ENABLED
+ #include "stm32f3xx_hal_smbus.h"
+#endif /* HAL_SMBUS_MODULE_ENABLED */
+
+#ifdef HAL_SPI_MODULE_ENABLED
+ #include "stm32f3xx_hal_spi.h"
+#endif /* HAL_SPI_MODULE_ENABLED */
+
+#ifdef HAL_TIM_MODULE_ENABLED
+ #include "stm32f3xx_hal_tim.h"
+#endif /* HAL_TIM_MODULE_ENABLED */
+
+#ifdef HAL_TSC_MODULE_ENABLED
+ #include "stm32f3xx_hal_tsc.h"
+#endif /* HAL_TSC_MODULE_ENABLED */
+
+#ifdef HAL_UART_MODULE_ENABLED
+ #include "stm32f3xx_hal_uart.h"
+#endif /* HAL_UART_MODULE_ENABLED */
+
+#ifdef HAL_USART_MODULE_ENABLED
+ #include "stm32f3xx_hal_usart.h"
+#endif /* HAL_USART_MODULE_ENABLED */
+
+#ifdef HAL_WWDG_MODULE_ENABLED
+ #include "stm32f3xx_hal_wwdg.h"
+#endif /* HAL_WWDG_MODULE_ENABLED */
+
+/* Exported macro ------------------------------------------------------------*/
+#ifdef USE_FULL_ASSERT
+/**
+ * @brief The assert_param macro is used for function's parameters check.
+ * @param expr: If expr is false, it calls assert_failed function
+ * which reports the name of the source file and the source
+ * line number of the call that failed.
+ * If expr is true, it returns no value.
+ * @retval None
+ */
+ #define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
+/* Exported functions ------------------------------------------------------- */
+ void assert_failed(uint8_t* file, uint32_t line);
+#else
+ #define assert_param(expr) ((void)0U)
+#endif /* USE_FULL_ASSERT */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F3xx_HAL_CONF_H */
+
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/lib/cmsis_core b/lib/cmsis_core
new file mode 160000
+Subproject 96d6da4e252b06dcfdc041e7df23e86161c3300
diff --git a/lib/cmsis_device b/lib/cmsis_device
new file mode 160000
+Subproject 5e4ee5ed7a7b6c85176bb70a9fd3c72d6eb99f1
diff --git a/lib/hal_driver b/lib/hal_driver
new file mode 160000
+Subproject 1761b6207318ede021706e75aae78f452d72b6f
diff --git a/lib/musl b/lib/musl
new file mode 160000
+Subproject a5aff1972c9e3981566414b09a28e331ccd2be5
diff --git a/src/bootloader.c b/src/bootloader.c
new file mode 100644
index 0000000..f6e313a
--- /dev/null
+++ b/src/bootloader.c
@@ -0,0 +1,99 @@
+
+#include <fe_global.h>
+#include <fe_config_backend.h>
+#include <bootloader.h>
+#include <core_cm4.h>
+
+typedef void (*void_func)(void);
+
+extern int _Flash_Base;
+size_t flash_base = (size_t)&_Flash_Base;
+extern int _Flash_Size;
+size_t flash_size = (size_t)&_Flash_Size;
+extern int _Bootloader_Size;
+size_t bootloader_size = (size_t)&_Bootloader_Size;
+
+
+bool fe_check_img_valid(void) {
+ uint32_t *end_of_flash = (uint32_t *)(flash_base + flash_size);
+ end_of_flash -= 1;
+ return *end_of_flash != 0xffffffff;
+}
+
+void fe_jump_to_application() {
+ uint32_t *user_isr_vector = (uint32_t *)flash_base;
+ void_func user_reset_vector = (void_func)user_isr_vector[1];
+
+ SCB->VTOR = (uint32_t)flash_base;
+ __set_MSP(user_isr_vector[0]);
+ user_reset_vector();
+}
+
+void fe_system_reset(void) {
+ SCB->AIRCR |= SCB_AIRCR_SYSRESETREQ_Msk;
+}
+
+void flash_unlock() {
+ FLASH->KEYR = 0x45670123;
+ FLASH->KEYR = 0xCDEF89AB;
+}
+
+void flash_lock() {
+ FLASH->CR |= FLASH_CR_LOCK;
+}
+
+int flash_erase_page(size_t addr) {
+ while (FLASH->SR & FLASH_SR_BSY)
+ ;
+
+ FLASH->CR |= FLASH_CR_PER;
+ FLASH->AR = addr;
+ FLASH->CR |= FLASH_CR_STRT;
+
+ /* RM0365, pg. 63: The software should start checking if the BSY bit equals ‘0’ at least one CPU cycle after setting
+ * the STRT bit */
+ asm volatile ("nop");
+
+ while (FLASH->SR & FLASH_SR_BSY)
+ ;
+
+ if (FLASH->SR & FLASH_SR_EOP) {
+ FLASH->SR = FLASH_SR_EOP;
+ return 0;
+ }
+ return -1;
+}
+
+int flash_write(size_t addr, char *buf, size_t len) {
+ assert((len&1) == 0);
+ assert((addr&1) == 0);
+
+ uint16_t *dst = (uint16_t *)addr;
+ uint16_t *src = (uint16_t *)src;
+ len /= 2;
+ while (len--) {
+ *dst++ = *src++;
+ while (FLASH->SR & FLASH_SR_BSY)
+ ;
+ }
+
+ if (FLASH->SR & FLASH_SR_EOP)
+ FLASH->SR = FLASH_SR_EOP;
+ else
+ return 1;
+
+ return 0;
+}
+
+int erase_user_flash() {
+ assert ((_Bootloader_Size & (PAGE_SIZE-1)) == 0);
+ size_t first_page = _Flash_Base + _Bootloader_Size;
+ size_t npages = (_Flash_Size - _Bootloader_Size) / PAGE_SIZE;
+
+ int rc = 0;
+ while (npages--)
+ rc |= flash_erase_page(first_page + npages); /* TODO error handling */
+ return rc;
+}
+
+
diff --git a/src/clocks.c b/src/clocks.c
new file mode 100644
index 0000000..a8cb8e4
--- /dev/null
+++ b/src/clocks.c
@@ -0,0 +1,83 @@
+#include <fe_global.h>
+#include <fe_clocks.h>
+
+unsigned int sysclk_speed;
+unsigned int ahb_speed;
+unsigned int apb1_speed;
+unsigned int apb2_speed;
+unsigned int apb1_timer_speed;
+unsigned int apb2_timer_speed;
+
+
+void delay_ms(int ms) {
+ uint32_t init_val = SysTick->VAL;
+ uint32_t wait_end = sys_time_millis + ms;
+
+ while (sys_time_millis < wait_end)
+ ;
+
+ while (SysTick->VAL >= init_val) {
+ if (sys_time_millis > wait_end)
+ return;
+ }
+}
+
+void fe_config_clocks()
+{
+ /* 8MHz HSI clock as PLL source. */
+#define HSI_SPEED 8000000
+ /* PLL output = HSI / 2 * PLL_MUL */
+#define PLL_MUL 16
+
+ /* Check that we came out of reset correctly */
+ if (((RCC->CFGR & RCC_CFGR_SWS_Msk) >> RCC_CFGR_SW_Pos) != 0)
+ asm volatile ("bkpt");
+ if (RCC->CR & RCC_CR_HSEON)
+ asm volatile ("bkpt");
+ if (RCC->CR & RCC_CR_PLLON)
+ asm volatile ("bkpt");
+
+ RCC->CFGR = 0;
+ RCC->CFGR |= (0<<RCC_CFGR_PLLSRC_Pos); /* PLL input: HSI /2 */
+ RCC->CFGR |= ((PLL_MUL-2)<<RCC_CFGR_PLLMUL_Pos);
+ sysclk_speed = HSI_SPEED / 2 * PLL_MUL;
+
+ /* set AHB prescaler to /1 */
+ RCC->CFGR |= (0 << RCC_CFGR_HPRE_Pos);
+ ahb_speed = sysclk_speed;
+
+ /* set ABP1 prescaler to 2 -> 36MHz */
+ RCC->CFGR |= (4 << RCC_CFGR_PPRE1_Pos);
+ apb1_speed = sysclk_speed / 2;
+ apb1_timer_speed = apb1_speed * 2;
+
+ /* set ABP2 prescaler to 2 -> 36MHz */
+ RCC->CFGR |= (4 << RCC_CFGR_PPRE2_Pos);
+ apb2_speed = sysclk_speed / 2;
+ apb2_timer_speed = apb2_speed * 2;
+
+ /* Configure PLL */
+ RCC->CR |= RCC_CR_PLLON;
+
+ /* Wait for main PLL */
+ while(!(RCC->CR & RCC_CR_PLLRDY))
+ ;
+
+ /* Configure Flash: enable prefetch; set latency = 2 wait states
+ * See reference manual (RM0365), Section 4.5.1
+ */
+ FLASH->ACR = FLASH_ACR_PRFTBE | (2<<FLASH_ACR_LATENCY_Pos);
+
+ /* Select PLL as system clock source */
+ RCC->CFGR &= ~RCC_CFGR_SW_Msk;
+ RCC->CFGR |= 2 << RCC_CFGR_SW_Pos;
+
+ /* Wait for clock to switch over */
+ while ((RCC->CFGR & RCC_CFGR_SWS_Msk)>>RCC_CFGR_SWS_Pos != 2)
+ ;
+
+ SystemCoreClockUpdate();
+ SysTick_Config(SystemCoreClock / 1000); /* 1 ms ticks */
+
+ NVIC_SetPriority(SysTick_IRQn, 32);
+}
diff --git a/src/cobs.c b/src/cobs.c
new file mode 100644
index 0000000..f6fb84a
--- /dev/null
+++ b/src/cobs.c
@@ -0,0 +1,211 @@
+
+#include "cobs.h"
+
+int cobs_encode_usart(int (*output)(void*, char), void *userdata, char *src, size_t srclen) {
+ if (srclen > 254)
+ return -1;
+
+ size_t p = 0;
+ while (p <= srclen) {
+
+ char val;
+ if (p != 0 && src[p-1] != 0) {
+ val = src[p-1];
+
+ } else {
+ size_t q = p;
+ while (q < srclen && src[q] != 0)
+ q++;
+ val = (char)q-p+1;
+ }
+
+ int rv = output(userdata, val);
+ if (rv)
+ return rv;
+ p++;
+ }
+
+ int rv = output(userdata, 0);
+ if (rv)
+ return rv;
+
+ return 0;
+}
+
+/*@ requires \valid(dst + (0..dstlen-1));
+ @ requires \valid_read(src + (0..srclen-1));
+ @ requires \separated(dst + (0..dstlen-1), src + (0..srclen-1));
+ @
+ @ behavior maybe_valid_frame:
+ @ assumes 1 <= srclen <= dstlen <= 65535;
+ @ assumes \exists integer j; j > 0 && \forall integer i; 0 <= i < j ==> src[i] != 0;
+ @ assumes \exists integer i; 0 <= i < srclen && src[i] == 0;
+ @ assigns dst[0..dstlen-1];
+ @ ensures \result >= 0 || \result == -3;
+ @ ensures \result >= 0 ==> src[\result+1] == 0;
+ @ ensures \result >= 0 ==> (\forall integer i; 0 <= i < \result ==> src[i] != 0);
+ @
+ @ behavior invalid_frame:
+ @ assumes 1 <= srclen <= dstlen <= 65535;
+ @ assumes src[0] == 0 || \forall integer i; 0 <= i < srclen ==> src[i] != 0;
+ @ assigns dst[0..dstlen-1];
+ @ ensures \result == -2;
+ @
+ @ behavior invalid_buffers:
+ @ assumes dstlen < 0 || dstlen > 65535
+ @ || srclen < 1 || srclen > 65535
+ @ || dstlen < srclen;
+ @ assigns \nothing;
+ @ ensures \result == -1;
+ @
+ @ complete behaviors;
+ @ disjoint behaviors;
+ @*/
+ssize_t cobs_decode(char *dst, size_t dstlen, char *src, size_t srclen) {
+ if (dstlen > 65535 || srclen > 65535)
+ return -1;
+
+ if (srclen < 1)
+ return -1;
+
+ if (dstlen < srclen)
+ return -1;
+
+ size_t p = 1;
+ size_t c = (unsigned char)src[0];
+ //@ assert 0 <= c < 256;
+ //@ assert 0 <= c;
+ //@ assert c < 256;
+ if (c == 0)
+ return -2; /* invalid framing. An empty frame would be [...] 00 01 00, not [...] 00 00 */
+ //@ assert c >= 0;
+ //@ assert c != 0;
+ //@ assert c <= 257;
+ //@ assert c > 0;
+ //@ assert c >= 0 && c != 0 ==> c > 0;
+
+ /*@ //loop invariant \forall integer i; 0 <= i <= p ==> (i == srclen || src[i] != 0);
+ @ loop invariant \forall integer i; 1 <= i < p ==> src[i] != 0;
+ @ loop invariant c > 0;
+ @ loop invariant 1 <= p <= srclen <= dstlen <= 65535;
+ @ loop invariant \separated(dst + (0..dstlen-1), src + (0..srclen-1));
+ @ loop invariant \valid_read(src + (0..srclen-1));
+ @ loop invariant \forall integer i; 1 <= i <= srclen ==> \valid(dst + i - 1);
+ @ loop assigns dst[0..dstlen-1], p, c;
+ @ loop variant srclen-p;
+ @*/
+ while (p < srclen && src[p]) {
+ char val;
+ c--;
+
+ //@ assert src[p] != 0;
+ if (c == 0) {
+ c = (unsigned char)src[p];
+ val = 0;
+ } else {
+ val = src[p];
+ }
+
+ //@ assert 0 <= p-1 <= dstlen-1;
+ dst[p-1] = val;
+ p++;
+ }
+
+ if (p == srclen)
+ return -2; /* Invalid framing. The terminating null byte should always be present in the input buffer. */
+
+ if (c != 1)
+ return -3; /* Invalid framing. The skip counter does not hit the end of the frame. */
+
+ //@ assert 0 < p <= srclen <= 65535;
+ //@ assert src[p] == 0;
+ //@ assert \forall integer i; 1 <= i < p ==> src[i] != 0;
+ return p-1;
+}
+
+void cobs_decode_incremental_initialize(struct cobs_decode_state *state) {
+ state->p = 0;
+ state->c = 0;
+}
+
+int cobs_decode_incremental(struct cobs_decode_state *state, char *dst, size_t dstlen, char src) {
+ if (state->p == 0) {
+ if (src == 0)
+ goto empty_errout; /* invalid framing. An empty frame would be [...] 00 01 00, not [...] 00 00 */
+ state->c = (unsigned char)src;
+ state->p++;
+ return -1;
+ }
+
+ if (!src) {
+ if (state->c != 1)
+ goto errout; /* Invalid framing. The skip counter does not hit the end of the frame. */
+ int rv = state->p-1;
+ cobs_decode_incremental_initialize(state);
+ return rv;
+ }
+
+ char val;
+ state->c--;
+
+ if (state->c == 0) {
+ state->c = (unsigned char)src;
+ val = 0;
+ } else {
+ val = src;
+ }
+
+ size_t pos = state->p-1;
+ if (pos >= dstlen)
+ return -4; /* output buffer too small */
+ dst[pos] = val;
+ state->p++;
+ return -1;
+
+errout:
+ cobs_decode_incremental_initialize(state);
+ return -2;
+
+empty_errout:
+ cobs_decode_incremental_initialize(state);
+ return -3;
+}
+
+#ifdef VALIDATION
+/*@
+ @ requires 0 <= d < 256;
+ @ assigns \nothing;
+ @*/
+size_t test(char foo, unsigned int d) {
+ unsigned int c = (unsigned char)foo;
+ if (c != 0) {
+ //@ assert c < 256;
+ //@ assert c >= 0;
+ //@ assert c != 0;
+ //@ assert c > 0;
+ }
+ if (d != 0) {
+ //@ assert d >= 0;
+ //@ assert d != 0;
+ //@ assert d > 0;
+ }
+ return c + d;
+}
+
+#include <__fc_builtin.h>
+
+void main(void) {
+ char inbuf[254];
+ char cobsbuf[256];
+ char outbuf[256];
+
+ size_t range = Frama_C_interval(0, sizeof(inbuf));
+ Frama_C_make_unknown((char *)inbuf, range);
+
+ cobs_encode(cobsbuf, sizeof(cobsbuf), inbuf, sizeof(inbuf));
+ cobs_decode(outbuf, sizeof(outbuf), cobsbuf, sizeof(cobsbuf));
+
+ //@ assert \forall integer i; 0 <= i < sizeof(inbuf) ==> outbuf[i] == inbuf[i];
+}
+#endif//VALIDATION
+
diff --git a/src/interrupts.c b/src/interrupts.c
new file mode 100644
index 0000000..00ee749
--- /dev/null
+++ b/src/interrupts.c
@@ -0,0 +1,62 @@
+#include "fe_global.h"
+#include "fe_interrupts.h"
+
+uint64_t sys_time_millis;
+
+/******************************************************************************/
+/* Cortex-M4 CPU Interrupts */
+/******************************************************************************/
+
+void NMI_Handler(void)
+{
+}
+
+void HardFault_Handler(void)
+{
+ while (42) {
+ asm volatile ("bkpt #13");
+ }
+}
+
+void MemManage_Handler(void)
+{
+ while (42) {
+ asm volatile ("bkpt #12");
+ }
+}
+
+void BusFault_Handler(void)
+{
+ while (42) {
+ asm volatile ("bkpt #11");
+ }
+}
+
+void UsageFault_Handler(void)
+{
+ while (42) {
+ asm volatile ("bkpt #10");
+ }
+}
+
+void SVC_Handler(void)
+{
+}
+
+void DebugMon_Handler(void)
+{
+}
+
+void PendSV_Handler(void)
+{
+}
+
+void SysTick_Handler(void)
+{
+ sys_time_millis += 1;
+}
+
+/******************************************************************************/
+/* STM32 Peripheral interrupts */
+/******************************************************************************/
+
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..f9992f5
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,370 @@
+#include <fe_global.h>
+#include <fe_clocks.h>
+#include <bootloader.h>
+#include <cobs.h>
+
+/* User configuration */
+#include <fe_config_backend.h>
+
+struct usart_config {
+ uint32_t rx_rcc_ahbenr_flags;
+ GPIO_TypeDef *rx_gpio;
+ int rx_pin;
+ int rx_alt;
+
+ uint32_t tx_rcc_ahbenr_flags;
+ GPIO_TypeDef *tx_gpio;
+ int tx_pin;
+ int tx_alt;
+
+ uint32_t apb1enr_mask;
+ uint32_t apb2enr_mask;
+ USART_TypeDef *usart;
+};
+
+struct usart_config usart_gpios[FE_CONFIG_USART_COUNT] = {
+ [FE_CONFIG_USART1_PB7] = {FE_CONFIG_GPIOB, 7, 7, FE_CONFIG_GPIOB, 6, 7, 0, RCC_APB2ENR_USART1EN, USART1},
+};
+
+void run_bootloader(void);
+int bootloader_handle_cmd(USART_TypeDef *us, char *buf, size_t len);
+void usart_init(struct usart_config *uc);
+void usart_putc(USART_TypeDef *us, char c);
+void usart_puts(USART_TypeDef *us, const char *data);
+int usart_rx(USART_TypeDef *us);
+int usart_tx_framed(USART_TypeDef * us, char *buf, size_t len);
+
+void __libc_init_array(void) { /* we don't need this. */ }
+
+void __assert_func (unused_a const char *file, unused_a int line, unused_a const char *function, unused_a const char *expr) {
+ asm volatile ("bkpt #69");
+ while(1) {}
+}
+
+void gpio_config(GPIO_TypeDef *gpio, int pin, int mode, int speed, int pullups, int alt) {
+ gpio->MODER &= ~(3<<(2*pin));
+ gpio->MODER |= mode<<(2*pin);
+ gpio->OSPEEDR &= ~(3<<(2*pin));
+ gpio->OSPEEDR |= speed<<(2*pin);
+ gpio->PUPDR &= ~(3<<(2*pin));
+ gpio->PUPDR |= pullups<<(2*pin);
+ if (pin < 8) {
+ gpio->AFR[0] &= ~(0xf << (4*pin));
+ gpio->AFR[0] |= alt << (4*pin);
+ } else {
+ pin -= 8;
+ gpio->AFR[1] &= ~(0xf << (4*pin));
+ gpio->AFR[1] |= alt << (4*pin);
+ }
+}
+
+int main(void)
+{
+ const struct fe_config_def *c = &fe_config;
+
+ uint32_t old_moder = c->bootloader_enable_pin.gpio->MODER;
+ uint32_t old_ospeedr = c->bootloader_enable_pin.gpio->OSPEEDR;
+ uint32_t old_pupdr = c->bootloader_enable_pin.gpio->PUPDR;
+ RCC->AHBENR |= c->bootloader_enable_pin.rcc_ahbenr_flags;
+ int pullups = c->bootloader_enable_level ? 2 : 1;
+ gpio_config(c->bootloader_enable_pin.gpio, c->bootloader_enable_pin.pin_number, 0, 0, pullups, 0);
+
+ delay_ms(50);
+ int enable_pin_state = ((c->bootloader_enable_pin.gpio->IDR >> c->bootloader_enable_pin.pin_number) & 1);
+ if (enable_pin_state == c->bootloader_enable_level || !fe_check_img_valid()) {
+ fe_config_clocks();
+ run_bootloader();
+ fe_system_reset();
+
+ } else {
+ c->bootloader_enable_pin.gpio->MODER = old_moder;
+ c->bootloader_enable_pin.gpio->OSPEEDR = old_ospeedr;
+ c->bootloader_enable_pin.gpio->PUPDR = old_pupdr;
+ fe_jump_to_application();
+ }
+
+ /* Should never be reached. */
+ assert(0);
+ return 0;
+}
+
+#define MAX_RX_SIZE 512
+char rx_buf[MAX_RX_SIZE];
+
+void run_bootloader() {
+ assert(fe_config.usart <= FE_CONFIG_USART_COUNT);
+ struct usart_config *uc = &usart_gpios[fe_config.usart];
+
+ usart_init(uc);
+ usart_puts(uc->usart, fe_config.welcome_string);
+ usart_putc(uc->usart, 0x00);
+
+ struct cobs_decode_state cobs_st;
+ cobs_decode_incremental_initialize(&cobs_st);
+ while (42) {
+ int c = usart_rx(uc->usart);
+ if (c == -2) {
+ /* ignore errors for now */
+ continue;
+ } else if (c == -1) {
+ /* We received nothing */
+ continue;
+ }
+
+ int rc = cobs_decode_incremental(&cobs_st, rx_buf, sizeof(rx_buf), c);
+ if (rc == -1) {
+ continue;
+
+ } else if (rc < 0) {
+ /* Ignore errors for now */
+ continue;
+ }
+
+ (void)bootloader_handle_cmd(uc->usart, rx_buf, rc); /* ignore errors for now */
+ }
+}
+
+enum bootloader_cmd {
+ /* Generic commands */
+ FE_CMD_REPLY = 0,
+ FE_CMD_PING = 1,
+ FE_CMD_IDENTIFY = 2,
+
+ /* Bootloader commands */
+ FE_CMD_ERASE = 16 + 0,
+ FE_CMD_WRITE_BLOCK = 16 + 1,
+ FE_CMD_REBOOT = 16 + 2,
+
+ /* Reserved commands */
+ FE_CMD_RESERVED0 = 'e', /* 0x65 / 101 Reserved for welcome string */
+};
+
+enum error_codes {
+ FE_SUCCESS = 0,
+ FE_ECMD = 1,
+ FE_ESIZE = 2,
+ FE_EINVAL = 3,
+ FE_ESYS = 4,
+};
+
+#define FE_MAX_PACKET_SIZE 254
+struct cmd_header {
+ uint8_t cmd; /* Command code, see enum bootloader_cmd */
+ uint32_t tag; /* Tag for request/response identification. Echoed back to requestor in response. */
+} __attribute__((packed));
+
+#define FE_MAX_PAYLOAD_SIZE (FE_MAX_PACKET_SIZE - sizeof(struct cmd_header))
+
+struct id_response {
+ uint8_t major_version;
+ uint8_t minor_version;
+ uint32_t idcode;
+ uint8_t serial[6];
+ char id_string[FE_MAX_PAYLOAD_SIZE - 2];
+};
+
+struct simple_response {
+ int32_t return_code;
+};
+
+struct cmd_packet {
+ struct cmd_header hdr;
+ union {
+ uint8_t data[FE_MAX_PAYLOAD_SIZE];
+ struct id_response id_response;
+ struct simple_response simple_response;
+ };
+};
+
+static const uint8_t major_version = 1;
+static const uint8_t minor_version = 0;
+static const char *id_string = "Fenris Bootloader";
+
+static int err_simple(USART_TypeDef *us, struct cmd_packet *pkt, int rc);
+static int err_simple(USART_TypeDef *us, struct cmd_packet *pkt, int rc) {
+ struct simple_response *res = &pkt->simple_response;
+ pkt->hdr.cmd = FE_CMD_REPLY;
+ /* leave tag unaffected */
+ res->return_code = rc;
+ return usart_tx_framed(us, (char *)pkt, sizeof(struct cmd_header) + sizeof(struct simple_response));
+}
+
+static size_t flash_write_addr = 0;
+
+int bootloader_handle_cmd(USART_TypeDef *us, char *buf, size_t len) {
+ struct cmd_packet *pkt = (struct cmd_packet *)buf;
+ int rc = 0;
+ if (len < sizeof(struct cmd_header)) {
+ memset(buf, 0, sizeof(struct cmd_header));
+ return err_simple(us, pkt, -FE_ESIZE);
+ }
+ int payload_len = len-sizeof(struct cmd_header);
+
+ pkt->hdr.cmd = FE_CMD_REPLY;
+
+ switch (pkt->hdr.cmd) {
+ case FE_CMD_PING:
+ return usart_tx_framed(us, buf, len);
+
+ case FE_CMD_IDENTIFY: {
+ if (payload_len != 0)
+ return err_simple(us, pkt, -FE_ESIZE);
+
+ struct id_response *res = &pkt->id_response;
+ memcpy(res->serial, (void*)UID_BASE, 12);
+ res->idcode = DBGMCU->IDCODE;
+ res->major_version = major_version;
+ res->minor_version = minor_version;
+ strncpy(res->id_string, id_string, sizeof(res->id_string));
+ len = sizeof(struct cmd_header) + 2 + strlen(id_string) + 1;
+ if (len < FE_MAX_PACKET_SIZE)
+ return usart_tx_framed(us, buf, len);
+ return -10;
+ }
+
+ case FE_CMD_ERASE: {
+ if (payload_len != 4)
+ return err_simple(us, pkt, -FE_ESIZE);
+
+ if (*((uint32_t*)pkt->data) != 0x54454c44)
+ return err_simple(us, pkt, -FE_EINVAL);
+
+ flash_unlock();
+
+ if (erase_user_flash()) {
+ flash_lock();
+ return err_simple(us, pkt, -FE_ESYS);
+ }
+
+ flash_lock();
+ flash_write_addr = flash_base;
+
+ return err_simple(us, pkt, 0);
+ }
+
+ case FE_CMD_WRITE_BLOCK: {
+ if (payload_len == 0)
+ return err_simple(us, pkt, -FE_ESIZE);
+
+ if ((payload_len&1) != 0)
+ return err_simple(us, pkt, -FE_ESIZE);
+
+ if (flash_write_addr + payload_len == flash_size) {
+ /* FIXME sig check */
+ if (0) { /* invalid signature */
+ return err_simple(us, pkt, -FE_EINVAL);
+ }
+
+ } else if (flash_write_addr + payload_len > flash_size) {
+ return err_simple(us, pkt, -FE_EINVAL);
+ }
+
+ if (!flash_write(flash_write_addr, pkt->data, payload_len))
+ return err_simple(us, pkt, -FE_ESYS);
+ flash_write_addr += payload_len;
+ }
+ case FE_CMD_REBOOT: {
+ fe_system_reset();
+ }
+
+ default: {
+ return err_simple(us, pkt, -FE_ECMD);
+ }
+ }
+}
+
+void usart_init(struct usart_config *uc) {
+ RCC->AHBENR |= uc->rx_rcc_ahbenr_flags | uc->tx_rcc_ahbenr_flags;
+ gpio_config(uc->rx_gpio, uc->rx_pin, 2, 3, 1, uc->rx_alt);
+ gpio_config(uc->tx_gpio, uc->tx_pin, 2, 3, 0, uc->tx_alt);
+
+ RCC->APB1ENR |= uc->apb1enr_mask;
+ RCC->APB2ENR |= uc->apb2enr_mask;
+
+ uc->usart->CR1 = USART_CR1_TE | USART_CR1_RE;
+
+ int bus_speed = uc->apb1enr_mask ? apb1_speed : apb2_speed;
+ uc->usart->BRR = bus_speed * 16 / fe_config.baudrate / 16;
+ uc->usart->CR1 |= USART_CR1_UE;
+}
+
+void usart_putc(USART_TypeDef *us, char c) {
+ while (!(us->ISR & USART_ISR_TXE))
+ ;
+ us->TDR = c;
+}
+
+void usart_puts(USART_TypeDef *us, const char *data) {
+ for (const char *c = data; *c; c++)
+ usart_putc(us, *c);
+}
+
+int usart_rx(USART_TypeDef *us) {
+ if ((us->ISR & USART_ISR_ORE) || (us->ISR & USART_ISR_PE)) {
+ /* Ignore overruns or parity errors */
+ us->ICR = USART_ICR_ORECF | USART_ICR_PECF;
+ return -2;
+ }
+
+ if (us->ISR & USART_ISR_RXNE)
+ return us->RDR;
+
+ return -1;
+}
+
+static int cobs_encode_usart_output(void *userdata, char c);
+static int cobs_encode_usart_output(void *userdata, char c) {
+ usart_putc((USART_TypeDef *)userdata, c);
+ return 0;
+}
+
+int usart_tx_framed(USART_TypeDef * us, char *buf, size_t len) {
+ return cobs_encode_usart(cobs_encode_usart_output, us, buf, len);
+}
+
+void *memcpy(void *restrict dest, const void *restrict src, size_t n)
+{
+ unsigned char *d = dest;
+ const unsigned char *s = src;
+
+ for (; n; n--) *d++ = *s++;
+ return dest;
+}
+
+void *memset(void *dest, int c, size_t n)
+{
+ unsigned char *s = dest;
+ size_t k;
+
+ /* Fill head and tail with minimal branching. Each
+ * conditional ensures that all the subsequently used
+ * offsets are well-defined and in the dest region. */
+
+ if (!n) return dest;
+ s[0] = c;
+ s[n-1] = c;
+ if (n <= 2) return dest;
+ s[1] = c;
+ s[2] = c;
+ s[n-2] = c;
+ s[n-3] = c;
+ if (n <= 6) return dest;
+ s[3] = c;
+ s[n-4] = c;
+ if (n <= 8) return dest;
+
+ /* Advance pointer to align it at a 4-byte boundary,
+ * and truncate n to a multiple of 4. The previous code
+ * already took care of any head/tail that get cut off
+ * by the alignment. */
+
+ k = -(uintptr_t)s & 3;
+ s += k;
+ n -= k;
+ n &= -4;
+
+ /* Pure C fallback with no aliasing violations. */
+ for (; n; n--, s++) *s = c;
+
+ return dest;
+}
diff --git a/src/system_stm32f3xx.c b/src/system_stm32f3xx.c
new file mode 100644
index 0000000..9e75a9e
--- /dev/null
+++ b/src/system_stm32f3xx.c
@@ -0,0 +1,298 @@
+/**
+ ******************************************************************************
+ * @file system_stm32f3xx.c
+ * @author MCD Application Team
+ * @brief CMSIS Cortex-M4 Device Peripheral Access Layer System Source File.
+ *
+ * 1. This file provides two functions and one global variable to be called from
+ * user application:
+ * - SystemInit(): This function is called at startup just after reset and
+ * before branch to main program. This call is made inside
+ * the "startup_stm32f3xx.s" file.
+ *
+ * - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
+ * by the user application to setup the SysTick
+ * timer or configure other parameters.
+ *
+ * - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
+ * be called whenever the core clock is changed
+ * during program execution.
+ *
+ * 2. After each device reset the HSI (8 MHz) is used as system clock source.
+ * Then SystemInit() function is called, in "startup_stm32f3xx.s" file, to
+ * configure the system clock before to branch to main program.
+ *
+ * 3. This file configures the system clock as follows:
+ *=============================================================================
+ * Supported STM32F3xx device
+ *-----------------------------------------------------------------------------
+ * System Clock source | HSI
+ *-----------------------------------------------------------------------------
+ * SYSCLK(Hz) | 8000000
+ *-----------------------------------------------------------------------------
+ * HCLK(Hz) | 8000000
+ *-----------------------------------------------------------------------------
+ * AHB Prescaler | 1
+ *-----------------------------------------------------------------------------
+ * APB2 Prescaler | 1
+ *-----------------------------------------------------------------------------
+ * APB1 Prescaler | 1
+ *-----------------------------------------------------------------------------
+ * USB Clock | DISABLE
+ *-----------------------------------------------------------------------------
+ *=============================================================================
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/** @addtogroup CMSIS
+ * @{
+ */
+
+/** @addtogroup stm32f3xx_system
+ * @{
+ */
+
+/** @addtogroup STM32F3xx_System_Private_Includes
+ * @{
+ */
+
+#include "stm32f3xx.h"
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F3xx_System_Private_TypesDefinitions
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F3xx_System_Private_Defines
+ * @{
+ */
+#if !defined (HSE_VALUE)
+ #define HSE_VALUE ((uint32_t)8000000) /*!< Default value of the External oscillator in Hz.
+ This value can be provided and adapted by the user application. */
+#endif /* HSE_VALUE */
+
+#if !defined (HSI_VALUE)
+ #define HSI_VALUE ((uint32_t)8000000) /*!< Default value of the Internal oscillator in Hz.
+ This value can be provided and adapted by the user application. */
+#endif /* HSI_VALUE */
+
+/*!< Uncomment the following line if you need to relocate your vector Table in
+ Internal SRAM. */
+/* #define VECT_TAB_SRAM */
+#define VECT_TAB_OFFSET 0x0 /*!< Vector Table base offset field.
+ This value must be a multiple of 0x200. */
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F3xx_System_Private_Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F3xx_System_Private_Variables
+ * @{
+ */
+ /* This variable is updated in three ways:
+ 1) by calling CMSIS function SystemCoreClockUpdate()
+ 2) by calling HAL API function HAL_RCC_GetHCLKFreq()
+ 3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
+ Note: If you use this function to configure the system clock there is no need to
+ call the 2 first functions listed above, since SystemCoreClock variable is
+ updated automatically.
+ */
+uint32_t SystemCoreClock = 8000000;
+
+const uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
+const uint8_t APBPrescTable[8] = {0, 0, 0, 0, 1, 2, 3, 4};
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F3xx_System_Private_FunctionPrototypes
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F3xx_System_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief Setup the microcontroller system
+ * Initialize the FPU setting, vector table location and the PLL configuration is reset.
+ * @param None
+ * @retval None
+ */
+void SystemInit(void)
+{
+ /* FPU settings ------------------------------------------------------------*/
+ #if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
+ SCB->CPACR |= ((3UL << 10*2)|(3UL << 11*2)); /* set CP10 and CP11 Full Access */
+ #endif
+
+ /* Reset the RCC clock configuration to the default reset state ------------*/
+ /* Set HSION bit */
+ RCC->CR |= (uint32_t)0x00000001;
+
+ /* Reset CFGR register */
+ RCC->CFGR &= 0xF87FC00C;
+
+ /* Reset HSEON, CSSON and PLLON bits */
+ RCC->CR &= (uint32_t)0xFEF6FFFF;
+
+ /* Reset HSEBYP bit */
+ RCC->CR &= (uint32_t)0xFFFBFFFF;
+
+ /* Reset PLLSRC, PLLXTPRE, PLLMUL and USBPRE bits */
+ RCC->CFGR &= (uint32_t)0xFF80FFFF;
+
+ /* Reset PREDIV1[3:0] bits */
+ RCC->CFGR2 &= (uint32_t)0xFFFFFFF0;
+
+ /* Reset USARTSW[1:0], I2CSW and TIMs bits */
+ RCC->CFGR3 &= (uint32_t)0xFF00FCCC;
+
+ /* Disable all interrupts */
+ RCC->CIR = 0x00000000;
+
+#ifdef VECT_TAB_SRAM
+ SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */
+#else
+ SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH */
+#endif
+}
+
+/**
+ * @brief Update SystemCoreClock variable according to Clock Register Values.
+ * The SystemCoreClock variable contains the core clock (HCLK), it can
+ * be used by the user application to setup the SysTick timer or configure
+ * other parameters.
+ *
+ * @note Each time the core clock (HCLK) changes, this function must be called
+ * to update SystemCoreClock variable value. Otherwise, any configuration
+ * based on this variable will be incorrect.
+ *
+ * @note - The system frequency computed by this function is not the real
+ * frequency in the chip. It is calculated based on the predefined
+ * constant and the selected clock source:
+ *
+ * - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)
+ *
+ * - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)
+ *
+ * - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)
+ * or HSI_VALUE(*) multiplied/divided by the PLL factors.
+ *
+ * (*) HSI_VALUE is a constant defined in stm32f3xx_hal.h file (default value
+ * 8 MHz) but the real value may vary depending on the variations
+ * in voltage and temperature.
+ *
+ * (**) HSE_VALUE is a constant defined in stm32f3xx_hal.h file (default value
+ * 8 MHz), user has to ensure that HSE_VALUE is same as the real
+ * frequency of the crystal used. Otherwise, this function may
+ * have wrong result.
+ *
+ * - The result of this function could be not correct when using fractional
+ * value for HSE crystal.
+ *
+ * @param None
+ * @retval None
+ */
+void SystemCoreClockUpdate (void)
+{
+ uint32_t tmp = 0, pllmull = 0, pllsource = 0, predivfactor = 0;
+
+ /* Get SYSCLK source -------------------------------------------------------*/
+ tmp = RCC->CFGR & RCC_CFGR_SWS;
+
+ switch (tmp)
+ {
+ case RCC_CFGR_SWS_HSI: /* HSI used as system clock */
+ SystemCoreClock = HSI_VALUE;
+ break;
+ case RCC_CFGR_SWS_HSE: /* HSE used as system clock */
+ SystemCoreClock = HSE_VALUE;
+ break;
+ case RCC_CFGR_SWS_PLL: /* PLL used as system clock */
+ /* Get PLL clock source and multiplication factor ----------------------*/
+ pllmull = RCC->CFGR & RCC_CFGR_PLLMUL;
+ pllsource = RCC->CFGR & RCC_CFGR_PLLSRC;
+ pllmull = ( pllmull >> 18) + 2;
+
+#if defined (STM32F302xE) || defined (STM32F303xE) || defined (STM32F398xx)
+ predivfactor = (RCC->CFGR2 & RCC_CFGR2_PREDIV) + 1;
+ if (pllsource == RCC_CFGR_PLLSRC_HSE_PREDIV)
+ {
+ /* HSE oscillator clock selected as PREDIV1 clock entry */
+ SystemCoreClock = (HSE_VALUE / predivfactor) * pllmull;
+ }
+ else
+ {
+ /* HSI oscillator clock selected as PREDIV1 clock entry */
+ SystemCoreClock = (HSI_VALUE / predivfactor) * pllmull;
+ }
+#else
+ if (pllsource == RCC_CFGR_PLLSRC_HSI_DIV2)
+ {
+ /* HSI oscillator clock divided by 2 selected as PLL clock entry */
+ SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
+ }
+ else
+ {
+ predivfactor = (RCC->CFGR2 & RCC_CFGR2_PREDIV) + 1;
+ /* HSE oscillator clock selected as PREDIV1 clock entry */
+ SystemCoreClock = (HSE_VALUE / predivfactor) * pllmull;
+ }
+#endif /* STM32F302xE || STM32F303xE || STM32F398xx */
+ break;
+ default: /* HSI used as system clock */
+ SystemCoreClock = HSI_VALUE;
+ break;
+ }
+ /* Compute HCLK clock frequency ----------------*/
+ /* Get HCLK prescaler */
+ tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)];
+ /* HCLK clock frequency */
+ SystemCoreClock >>= tmp;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
diff --git a/startup_stm32f302x8.s b/startup_stm32f302x8.s
new file mode 100644
index 0000000..e91164e
--- /dev/null
+++ b/startup_stm32f302x8.s
@@ -0,0 +1,414 @@
+/**
+ ******************************************************************************
+ * @file startup_stm32f302x8.s
+ * @author MCD Application Team
+ * @brief STM32F302x6/STM32F302x8 devices vector table for GCC toolchain.
+ * This module performs:
+ * - Set the initial SP
+ * - Set the initial PC == Reset_Handler,
+ * - Set the vector table entries with the exceptions ISR address,
+ * - Configure the clock system
+ * - Branches to main in the C library (which eventually
+ * calls main()).
+ * After Reset the Cortex-M4 processor is in Thread mode,
+ * priority is Privileged, and the Stack is set to Main.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+ .syntax unified
+ .cpu cortex-m4
+ .fpu softvfp
+ .thumb
+
+.global g_pfnVectors
+.global Default_Handler
+
+/* start address for the initialization values of the .data section.
+defined in linker script */
+.word _sidata
+/* start address for the .data section. defined in linker script */
+.word _sdata
+/* end address for the .data section. defined in linker script */
+.word _edata
+/* start address for the .bss section. defined in linker script */
+.word _sbss
+/* end address for the .bss section. defined in linker script */
+.word _ebss
+
+.equ BootRAM, 0xF1E0F85F
+/**
+ * @brief This is the code that gets called when the processor first
+ * starts execution following a reset event. Only the absolutely
+ * necessary set is performed, after which the application
+ * supplied main() routine is called.
+ * @param None
+ * @retval : None
+*/
+
+ .section .text.Reset_Handler
+ .weak Reset_Handler
+ .type Reset_Handler, %function
+Reset_Handler:
+ ldr sp, =_estack /* Atollic update: set stack pointer */
+
+/* Copy the data segment initializers from flash to SRAM */
+ movs r1, #0
+ b LoopCopyDataInit
+
+CopyDataInit:
+ ldr r3, =_sidata
+ ldr r3, [r3, r1]
+ str r3, [r0, r1]
+ adds r1, r1, #4
+
+LoopCopyDataInit:
+ ldr r0, =_sdata
+ ldr r3, =_edata
+ adds r2, r0, r1
+ cmp r2, r3
+ bcc CopyDataInit
+ ldr r2, =_sbss
+ b LoopFillZerobss
+/* Zero fill the bss segment. */
+FillZerobss:
+ movs r3, #0
+ str r3, [r2], #4
+
+LoopFillZerobss:
+ ldr r3, = _ebss
+ cmp r2, r3
+ bcc FillZerobss
+
+/* Call the clock system intitialization function.*/
+ bl SystemInit
+/* Call static constructors */
+ bl __libc_init_array
+/* Call the application's entry point.*/
+ bl main
+
+LoopForever:
+ b LoopForever
+
+.size Reset_Handler, .-Reset_Handler
+
+/**
+ * @brief This is the code that gets called when the processor receives an
+ * unexpected interrupt. This simply enters an infinite loop, preserving
+ * the system state for examination by a debugger.
+ *
+ * @param None
+ * @retval : None
+*/
+ .section .text.Default_Handler,"ax",%progbits
+Default_Handler:
+Infinite_Loop:
+ b Infinite_Loop
+ .size Default_Handler, .-Default_Handler
+/******************************************************************************
+*
+* The minimal vector table for a Cortex-M4. Note that the proper constructs
+* must be placed on this to ensure that it ends up at physical address
+* 0x0000.0000.
+*
+******************************************************************************/
+ .section .isr_vector,"a",%progbits
+ .type g_pfnVectors, %object
+ .size g_pfnVectors, .-g_pfnVectors
+
+
+g_pfnVectors:
+ .word _estack
+ .word Reset_Handler
+ .word NMI_Handler
+ .word HardFault_Handler
+ .word MemManage_Handler
+ .word BusFault_Handler
+ .word UsageFault_Handler
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word SVC_Handler
+ .word DebugMon_Handler
+ .word 0
+ .word PendSV_Handler
+ .word SysTick_Handler
+ .word WWDG_IRQHandler
+ .word PVD_IRQHandler
+ .word TAMP_STAMP_IRQHandler
+ .word RTC_WKUP_IRQHandler
+ .word FLASH_IRQHandler
+ .word RCC_IRQHandler
+ .word EXTI0_IRQHandler
+ .word EXTI1_IRQHandler
+ .word EXTI2_TSC_IRQHandler
+ .word EXTI3_IRQHandler
+ .word EXTI4_IRQHandler
+ .word DMA1_Channel1_IRQHandler
+ .word DMA1_Channel2_IRQHandler
+ .word DMA1_Channel3_IRQHandler
+ .word DMA1_Channel4_IRQHandler
+ .word DMA1_Channel5_IRQHandler
+ .word DMA1_Channel6_IRQHandler
+ .word DMA1_Channel7_IRQHandler
+ .word ADC1_IRQHandler
+ .word USB_HP_CAN_TX_IRQHandler
+ .word USB_LP_CAN_RX0_IRQHandler
+ .word CAN_RX1_IRQHandler
+ .word CAN_SCE_IRQHandler
+ .word EXTI9_5_IRQHandler
+ .word TIM1_BRK_TIM15_IRQHandler
+ .word TIM1_UP_TIM16_IRQHandler
+ .word TIM1_TRG_COM_TIM17_IRQHandler
+ .word TIM1_CC_IRQHandler
+ .word TIM2_IRQHandler
+ .word 0
+ .word 0
+ .word I2C1_EV_IRQHandler
+ .word I2C1_ER_IRQHandler
+ .word I2C2_EV_IRQHandler
+ .word I2C2_ER_IRQHandler
+ .word 0
+ .word SPI2_IRQHandler
+ .word USART1_IRQHandler
+ .word USART2_IRQHandler
+ .word USART3_IRQHandler
+ .word EXTI15_10_IRQHandler
+ .word RTC_Alarm_IRQHandler
+ .word USBWakeUp_IRQHandler
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word SPI3_IRQHandler
+ .word 0
+ .word 0
+ .word TIM6_DAC_IRQHandler
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word COMP2_IRQHandler
+ .word COMP4_6_IRQHandler
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word I2C3_EV_IRQHandler
+ .word I2C3_ER_IRQHandler
+ .word USB_HP_IRQHandler
+ .word USB_LP_IRQHandler
+ .word USBWakeUp_RMP_IRQHandler
+ .word 0
+ .word 0
+ .word 0
+ .word 0
+ .word FPU_IRQHandler
+
+/*******************************************************************************
+*
+* Provide weak aliases for each Exception handler to the Default_Handler.
+* As they are weak aliases, any function with the same name will override
+* this definition.
+*
+*******************************************************************************/
+
+ .weak NMI_Handler
+ .thumb_set NMI_Handler,Default_Handler
+
+ .weak HardFault_Handler
+ .thumb_set HardFault_Handler,Default_Handler
+
+ .weak MemManage_Handler
+ .thumb_set MemManage_Handler,Default_Handler
+
+ .weak BusFault_Handler
+ .thumb_set BusFault_Handler,Default_Handler
+
+ .weak UsageFault_Handler
+ .thumb_set UsageFault_Handler,Default_Handler
+
+ .weak SVC_Handler
+ .thumb_set SVC_Handler,Default_Handler
+
+ .weak DebugMon_Handler
+ .thumb_set DebugMon_Handler,Default_Handler
+
+ .weak PendSV_Handler
+ .thumb_set PendSV_Handler,Default_Handler
+
+ .weak SysTick_Handler
+ .thumb_set SysTick_Handler,Default_Handler
+
+ .weak WWDG_IRQHandler
+ .thumb_set WWDG_IRQHandler,Default_Handler
+
+ .weak PVD_IRQHandler
+ .thumb_set PVD_IRQHandler,Default_Handler
+
+ .weak TAMP_STAMP_IRQHandler
+ .thumb_set TAMP_STAMP_IRQHandler,Default_Handler
+
+ .weak RTC_WKUP_IRQHandler
+ .thumb_set RTC_WKUP_IRQHandler,Default_Handler
+
+ .weak FLASH_IRQHandler
+ .thumb_set FLASH_IRQHandler,Default_Handler
+
+ .weak RCC_IRQHandler
+ .thumb_set RCC_IRQHandler,Default_Handler
+
+ .weak EXTI0_IRQHandler
+ .thumb_set EXTI0_IRQHandler,Default_Handler
+
+ .weak EXTI1_IRQHandler
+ .thumb_set EXTI1_IRQHandler,Default_Handler
+
+ .weak EXTI2_TSC_IRQHandler
+ .thumb_set EXTI2_TSC_IRQHandler,Default_Handler
+
+ .weak EXTI3_IRQHandler
+ .thumb_set EXTI3_IRQHandler,Default_Handler
+
+ .weak EXTI4_IRQHandler
+ .thumb_set EXTI4_IRQHandler,Default_Handler
+
+ .weak DMA1_Channel1_IRQHandler
+ .thumb_set DMA1_Channel1_IRQHandler,Default_Handler
+
+ .weak DMA1_Channel2_IRQHandler
+ .thumb_set DMA1_Channel2_IRQHandler,Default_Handler
+
+ .weak DMA1_Channel3_IRQHandler
+ .thumb_set DMA1_Channel3_IRQHandler,Default_Handler
+
+ .weak DMA1_Channel4_IRQHandler
+ .thumb_set DMA1_Channel4_IRQHandler,Default_Handler
+
+ .weak DMA1_Channel5_IRQHandler
+ .thumb_set DMA1_Channel5_IRQHandler,Default_Handler
+
+ .weak DMA1_Channel6_IRQHandler
+ .thumb_set DMA1_Channel6_IRQHandler,Default_Handler
+
+ .weak DMA1_Channel7_IRQHandler
+ .thumb_set DMA1_Channel7_IRQHandler,Default_Handler
+
+ .weak ADC1_IRQHandler
+ .thumb_set ADC1_IRQHandler,Default_Handler
+
+ .weak USB_HP_CAN_TX_IRQHandler
+ .thumb_set USB_HP_CAN_TX_IRQHandler,Default_Handler
+
+ .weak USB_LP_CAN_RX0_IRQHandler
+ .thumb_set USB_LP_CAN_RX0_IRQHandler,Default_Handler
+
+ .weak CAN_RX1_IRQHandler
+ .thumb_set CAN_RX1_IRQHandler,Default_Handler
+
+ .weak CAN_SCE_IRQHandler
+ .thumb_set CAN_SCE_IRQHandler,Default_Handler
+
+ .weak EXTI9_5_IRQHandler
+ .thumb_set EXTI9_5_IRQHandler,Default_Handler
+
+ .weak TIM1_BRK_TIM15_IRQHandler
+ .thumb_set TIM1_BRK_TIM15_IRQHandler,Default_Handler
+
+ .weak TIM1_UP_TIM16_IRQHandler
+ .thumb_set TIM1_UP_TIM16_IRQHandler,Default_Handler
+
+ .weak TIM1_TRG_COM_TIM17_IRQHandler
+ .thumb_set TIM1_TRG_COM_TIM17_IRQHandler,Default_Handler
+
+ .weak TIM1_CC_IRQHandler
+ .thumb_set TIM1_CC_IRQHandler,Default_Handler
+
+ .weak TIM2_IRQHandler
+ .thumb_set TIM2_IRQHandler,Default_Handler
+
+ .weak I2C1_EV_IRQHandler
+ .thumb_set I2C1_EV_IRQHandler,Default_Handler
+
+ .weak I2C1_ER_IRQHandler
+ .thumb_set I2C1_ER_IRQHandler,Default_Handler
+
+ .weak I2C2_EV_IRQHandler
+ .thumb_set I2C2_EV_IRQHandler,Default_Handler
+
+ .weak I2C2_ER_IRQHandler
+ .thumb_set I2C2_ER_IRQHandler,Default_Handler
+
+ .weak SPI2_IRQHandler
+ .thumb_set SPI2_IRQHandler,Default_Handler
+
+ .weak USART1_IRQHandler
+ .thumb_set USART1_IRQHandler,Default_Handler
+
+ .weak USART2_IRQHandler
+ .thumb_set USART2_IRQHandler,Default_Handler
+
+ .weak USART3_IRQHandler
+ .thumb_set USART3_IRQHandler,Default_Handler
+
+ .weak EXTI15_10_IRQHandler
+ .thumb_set EXTI15_10_IRQHandler,Default_Handler
+
+ .weak RTC_Alarm_IRQHandler
+ .thumb_set RTC_Alarm_IRQHandler,Default_Handler
+
+ .weak USBWakeUp_IRQHandler
+ .thumb_set USBWakeUp_IRQHandler,Default_Handler
+
+ .weak SPI3_IRQHandler
+ .thumb_set SPI3_IRQHandler,Default_Handler
+
+ .weak TIM6_DAC_IRQHandler
+ .thumb_set TIM6_DAC_IRQHandler,Default_Handler
+
+ .weak COMP2_IRQHandler
+ .thumb_set COMP2_IRQHandler,Default_Handler
+
+ .weak COMP4_6_IRQHandler
+ .thumb_set COMP4_6_IRQHandler,Default_Handler
+
+ .weak I2C3_EV_IRQHandler
+ .thumb_set I2C3_EV_IRQHandler,Default_Handler
+
+ .weak I2C3_ER_IRQHandler
+ .thumb_set I2C3_ER_IRQHandler,Default_Handler
+
+ .weak USB_HP_IRQHandler
+ .thumb_set USB_HP_IRQHandler,Default_Handler
+
+ .weak USB_LP_IRQHandler
+ .thumb_set USB_LP_IRQHandler,Default_Handler
+
+ .weak USBWakeUp_RMP_IRQHandler
+ .thumb_set USBWakeUp_RMP_IRQHandler,Default_Handler
+
+ .weak FPU_IRQHandler
+ .thumb_set FPU_IRQHandler,Default_Handler
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32f302r8tx.ld b/stm32f302r8tx.ld
new file mode 100644
index 0000000..f8275ec
--- /dev/null
+++ b/stm32f302r8tx.ld
@@ -0,0 +1,201 @@
+/*
+******************************************************************************
+**
+
+** File : LinkerScript.ld
+**
+** Author : Auto-generated by Ac6 System Workbench
+**
+** Abstract : Linker script for STM32F302R8Tx series
+** 64Kbytes FLASH and 16Kbytes RAM
+**
+** Set heap size, stack size and stack location according
+** to application requirements.
+**
+** Set memory bank area and size if external memory is used.
+**
+** Target : STMicroelectronics STM32
+**
+** Distribution: The file is distributed “as is,” without any warranty
+** of any kind.
+**
+*****************************************************************************
+** @attention
+**
+** <h2><center>&copy; COPYRIGHT(c) 2014 Ac6</center></h2>
+**
+** Redistribution and use in source and binary forms, with or without modification,
+** are permitted provided that the following conditions are met:
+** 1. Redistributions of source code must retain the above copyright notice,
+** this list of conditions and the following disclaimer.
+** 2. Redistributions in binary form must reproduce the above copyright notice,
+** this list of conditions and the following disclaimer in the documentation
+** and/or other materials provided with the distribution.
+** 3. Neither the name of Ac6 nor the names of its contributors
+** may be used to endorse or promote products derived from this software
+** without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**
+*****************************************************************************
+*/
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = 0x20004000; /* end of RAM */
+/* Generate a link error if heap and stack don't fit into RAM */
+_Min_Heap_Size = 0x200; /* required amount of heap */
+_Min_Stack_Size = 0x400; /* required amount of stack */
+
+_Flash_Base = 0x08000000;
+_Flash_Size = 64K;
+_Bootloader_Size = 0x2000; /* Reserver 8k for bootloader */
+
+/* Specify the memory areas */
+MEMORY
+{
+FLASH (rx) : ORIGIN = _Flash_Base, LENGTH = _Bootloader_Size
+USER_FLASH (xrw): ORIGIN = _Flash_Base + _Bootloader_Size, LENGTH = _Flash_Size - _Bootloader_Size
+RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 16K
+}
+
+/* Define output sections */
+SECTIONS
+{
+ /* The startup code goes first into FLASH */
+ .isr_vector :
+ {
+ . = ALIGN(4);
+ KEEP(*(.isr_vector)) /* Startup code */
+ . = ALIGN(4);
+ } >FLASH
+
+ /* The program code and other data goes into FLASH */
+ .text :
+ {
+ . = ALIGN(4);
+ *(.text) /* .text sections (code) */
+ *(.text*) /* .text* sections (code) */
+ *(.glue_7) /* glue arm to thumb code */
+ *(.glue_7t) /* glue thumb to arm code */
+ *(.eh_frame)
+
+ KEEP (*(.init))
+ KEEP (*(.fini))
+
+ . = ALIGN(4);
+ _etext = .; /* define a global symbols at end of code */
+ } >FLASH
+
+ /* Constant data goes into FLASH */
+ .rodata :
+ {
+ . = ALIGN(4);
+ *(.rodata) /* .rodata sections (constants, strings, etc.) */
+ *(.rodata*) /* .rodata* sections (constants, strings, etc.) */
+ . = ALIGN(4);
+ } >FLASH
+
+ .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
+ .ARM : {
+ __exidx_start = .;
+ *(.ARM.exidx*)
+ __exidx_end = .;
+ } >FLASH
+
+ .preinit_array :
+ {
+ PROVIDE_HIDDEN (__preinit_array_start = .);
+ KEEP (*(.preinit_array*))
+ PROVIDE_HIDDEN (__preinit_array_end = .);
+ } >FLASH
+ .init_array :
+ {
+ PROVIDE_HIDDEN (__init_array_start = .);
+ KEEP (*(SORT(.init_array.*)))
+ KEEP (*(.init_array*))
+ PROVIDE_HIDDEN (__init_array_end = .);
+ } >FLASH
+ .fini_array :
+ {
+ PROVIDE_HIDDEN (__fini_array_start = .);
+ KEEP (*(SORT(.fini_array.*)))
+ KEEP (*(.fini_array*))
+ PROVIDE_HIDDEN (__fini_array_end = .);
+ } >FLASH
+
+ /* used by the startup to initialize data */
+ _sidata = LOADADDR(.data);
+
+ /* Initialized data sections goes into RAM, load LMA copy after code */
+ .data :
+ {
+ . = ALIGN(4);
+ _sdata = .; /* create a global symbol at data start */
+ *(.data) /* .data sections */
+ *(.data*) /* .data* sections */
+
+ . = ALIGN(4);
+ _edata = .; /* define a global symbol at data end */
+ } >RAM AT> FLASH
+
+ _user_flash_start = ORIGIN(USER_FLASH);
+ _user_flash_size = LENGTH(USER_FLASH);
+ .user_flash : {
+ . = ALIGN(4);
+ *(.user_flash)
+ } >USER_FLASH
+
+
+ /* Uninitialized data section */
+ . = ALIGN(4);
+ .bss :
+ {
+ /* This is used by the startup in order to initialize the .bss secion */
+ _sbss = .; /* define a global symbol at bss start */
+ __bss_start__ = _sbss;
+ *(.bss)
+ *(.bss*)
+ *(COMMON)
+
+ . = ALIGN(4);
+ _ebss = .; /* define a global symbol at bss end */
+ __bss_end__ = _ebss;
+ } >RAM
+
+ /* User_heap_stack section, used to check that there is enough RAM left */
+ ._user_heap_stack :
+ {
+ . = ALIGN(8);
+ PROVIDE ( end = . );
+ PROVIDE ( _end = . );
+ . = . + _Min_Heap_Size;
+ . = . + _Min_Stack_Size;
+ . = ALIGN(8);
+ } >RAM
+
+
+
+ /* Remove information from the standard libraries */
+ /DISCARD/ :
+ {
+ libc.a ( * )
+ libm.a ( * )
+ libgcc.a ( * )
+ }
+
+ .ARM.attributes 0 : { *(.ARM.attributes) }
+}
+
+
diff --git a/tools/__pycache__/dsss_demod_test_waveform_gen.cpython-38.pyc b/tools/__pycache__/dsss_demod_test_waveform_gen.cpython-38.pyc
new file mode 100644
index 0000000..1512990
--- /dev/null
+++ b/tools/__pycache__/dsss_demod_test_waveform_gen.cpython-38.pyc
Binary files differ
diff --git a/tools/__pycache__/presig_gen.cpython-38.pyc b/tools/__pycache__/presig_gen.cpython-38.pyc
new file mode 100644
index 0000000..b28b1a9
--- /dev/null
+++ b/tools/__pycache__/presig_gen.cpython-38.pyc
Binary files differ
diff --git a/tools/butter_filter_gen.py b/tools/butter_filter_gen.py
new file mode 100644
index 0000000..0bb81bc
--- /dev/null
+++ b/tools/butter_filter_gen.py
@@ -0,0 +1,93 @@
+#!/usr/bin/env python3
+
+import math
+import sys
+import contextlib
+
+import scipy.signal as sig
+import numpy as np
+
+
+@contextlib.contextmanager
+def wrap(left='{', right='}', file=None, end=''):
+ print(left, file=file, end=end)
+ yield
+ print(right, file=file, end=end)
+
+@contextlib.contextmanager
+def print_include_guards(macro_name):
+ print(f'#ifndef {macro_name}')
+ print(f'#define {macro_name}')
+ print()
+ yield
+ print()
+ print(f'#endif /* {macro_name} */')
+
+macro_float = lambda f: f'{f}'.replace('.', 'F').replace('-', 'N').replace('+', 'P')
+
+ordinal = lambda n: "%d%s" % (n,"tsnrhtdd"[(n//10%10!=1)*(n%10<4)*n%10::4])
+
+SI_TABLE = {-18: 'a', -15: 'f', -12: 'p', -9: 'n', -6: 'µ', -3: 'm', 0: '', 3: 'k', 6: 'M', 9: 'G', 12: 'T', 15: 'P', 18: 'E'}
+def siprefix(x, space=' ', unit=''):
+ l = math.log10(x)//3*3
+ if l in SI_TABLE:
+ return f'{x/10**l}{space}{SI_TABLE[l]}{unit}'
+ return f'{x}{space}{unit}'
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser()
+ parser.add_argument('-m', '--macro-name', default='butter_filter', help='Prefix for output macro names')
+ parser.add_argument('fc', type=float, help='Corner frequency [Hz]')
+ parser.add_argument('fs', type=float, help='Sampling rate [Hz]')
+ parser.add_argument('n', type=int, nargs='?', default=6, help='Filter order')
+ args = parser.parse_args()
+
+ sos = sig.butter(args.n, args.fc, fs=args.fs, output='sos')
+
+ print('/* THIS IS A GENERATED FILE. DO NOT EDIT! */')
+ print()
+ with print_include_guards(f'__BUTTER_FILTER_GENERATED_{args.n}_{macro_float(args.fc)}_{macro_float(args.fs)}__'):
+
+ print(f'/* {ordinal(args.n)} order Butterworth IIR filter coefficients')
+ print(f' *')
+ print(f' * corner frequency f_c = {siprefix(args.fc)}Hz')
+ print(f' * sampling rate f_s = {siprefix(args.fs)}Hz')
+ print(f' */')
+ print()
+ print(f'#define {args.macro_name.upper()}_ORDER {args.n}')
+ print(f'#define {args.macro_name.upper()}_CLEN {(args.n+1)//2}')
+
+ # scipy.signal.butter by default returns extremely small bs for the first biquad and large ones for subsequent
+ # sections. Balance magnitudes to reduce possible rounding errors.
+ first_biquad_bs = sos[0][:3]
+ approx_mag = round(math.log10(np.mean(first_biquad_bs)))
+ mags = [approx_mag // len(sos)] * len(sos)
+ mags[0] += approx_mag - sum(mags)
+ sos[0][:3] /= 10**approx_mag
+ sos = np.array([ sec * np.array([10**mag, 10**mag, 10**mag, 1, 1, 1]) for mag, sec in zip(mags, sos) ])
+
+ ones = np.ones([100000])
+ _, steady_state = sig.sosfilt(sos, ones, zi=np.zeros([(args.n+1)//2, 2]))
+
+ print(f'#define {args.macro_name.upper()}_COEFF ', end='')
+ for sec in sos:
+ bs, ases = sec[:3], sec[4:6]
+
+ with wrap():
+ print('.b=', end='')
+ with wrap():
+ print(', '.join(f'{v}' for v in bs), end='')
+ print(', .a=', end='')
+ with wrap():
+ print(', '.join(f'{v}' for v in ases), end='')
+ print(', ', end='')
+ print()
+
+ print(f'#define {args.macro_name.upper()}_STEADY_STATE ', end='')
+ for sec in steady_state:
+ with wrap():
+ print(', '.join(f'{v}' for v in sec), end='')
+ print(', ', end='')
+ print()
+
diff --git a/tools/crypto_test.c b/tools/crypto_test.c
new file mode 100644
index 0000000..410fac2
--- /dev/null
+++ b/tools/crypto_test.c
@@ -0,0 +1,46 @@
+
+#include <stdint.h>
+#include <math.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/fcntl.h>
+
+#include "crypto.h"
+
+void oob_trigger_activated(enum trigger_domain domain, int serial) {
+ printf("oob_trigger_activated(%d, %d)\n", domain, serial);
+ fflush(stdout);
+}
+
+void print_usage() {
+ fprintf(stderr, "Usage: crypto_test [auth_key_hex]\n");
+}
+
+int main(int argc, char **argv) {
+ if (argc != 2) {
+ fprintf(stderr, "Error: Invalid arguments.\n");
+ print_usage();
+ return 1;
+ }
+
+ uint8_t auth_key[16];
+
+ for (size_t i=0; argv[1][i+0] != '\0' && argv[1][i+1] != '\0' && i/2<sizeof(auth_key); i+= 2) {
+ char buf[3] = { argv[1][i+0], argv[1][i+1], 0};
+ char *endptr;
+ auth_key[i/2] = strtoul(buf, &endptr, 16);
+ if (!endptr || *endptr != '\0') {
+ fprintf(stderr, "Invalid authkey\n");
+ return 1;
+ }
+ }
+
+ printf("rc=%d\n", oob_message_received(auth_key));
+
+ return 0;
+}
diff --git a/tools/crypto_test_runner.py b/tools/crypto_test_runner.py
new file mode 100644
index 0000000..34c8b59
--- /dev/null
+++ b/tools/crypto_test_runner.py
@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+import subprocess
+from os import path
+import binascii
+import re
+
+import presig_gen
+
+def do_test(domain, value, height, root_key, binary, expect_fail=False):
+ auth = presig_gen.gen_at_height(domain, value, height, root_key)
+ auth = binascii.hexlify(auth).decode()
+
+ output = subprocess.check_output([binary, auth])
+ *lines, rc_line = output.decode().splitlines()
+ rc = int(re.match('^rc=(\d+)$', rc_line).group(1))
+ assert expect_fail == (rc == 0)
+
+def run_tests(root_key, max_height, binary):
+ for domain, value in {
+ 'all': 'all',
+ 'vendor': presig_gen.TEST_VENDOR,
+ 'series': presig_gen.TEST_SERIES,
+ 'country': presig_gen.TEST_COUNTRY,
+ 'region': presig_gen.TEST_REGION,
+ }.items():
+ for height in range(max_height):
+ do_test(domain, value, height, root_key, binary)
+ do_test(domain, 'fail', height, root_key, binary, expect_fail=True)
+ do_test('fail', 'fail', height, root_key, binary, expect_fail=True)
+ do_test('', '', height, root_key, binary, expect_fail=True)
+ do_test(domain, value, max_height, root_key, binary, expect_fail=True)
+ do_test(domain, value, max_height+1, root_key, binary, expect_fail=True)
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser()
+ parser.add_argument('keyfile', help='Root key file')
+ parser.add_argument('max_height', type=int, default=8, nargs='?', help='Height of generated prekeys')
+ default_binary = path.abspath(path.join(path.dirname(__file__), '../build/tools/crypto_test'))
+ parser.add_argument('binary', default=default_binary, nargs='?', help='crypto_test binary to use')
+ args = parser.parse_args()
+
+ with open(args.keyfile, 'r') as f:
+ root_key = binascii.unhexlify(f.read().strip())
+
+ run_tests(root_key, args.max_height, args.binary)
diff --git a/tools/cwt_wavelet_header_gen.py b/tools/cwt_wavelet_header_gen.py
new file mode 100644
index 0000000..8be785b
--- /dev/null
+++ b/tools/cwt_wavelet_header_gen.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+
+import textwrap
+
+import scipy.signal as sig
+import numpy as np
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser()
+ parser.add_argument('n', type=int, help='Window size')
+ parser.add_argument('w', type=float, help='Wavelet width')
+ parser.add_argument('-v', '--variable', default='cwt_ricker_table', help='Name for alias variable pointing to generated wavelet LUT')
+ args = parser.parse_args()
+
+ print(f'/* CWT Ricker wavelet LUT for {args.n} sample window of width {args.w}. */')
+ varname = f'cwt_ricker_{args.n}_window_{str(args.w).replace(".", "F")}'
+ print(f'const float {varname}[{args.n}] = {{')
+
+ win = sig.ricker(args.n, args.w)
+ par = ' '.join(f'{f:>015.12e}f,' for f in win)
+ print(textwrap.fill(par,
+ initial_indent=' '*4, subsequent_indent=' '*4,
+ width=120,
+ replace_whitespace=False, drop_whitespace=False))
+ print('};')
+ print()
+ print(f'const float * const {args.variable} __attribute__((weak)) = {varname};')
+
diff --git a/tools/dsss_demod_test.c b/tools/dsss_demod_test.c
new file mode 100644
index 0000000..f7df111
--- /dev/null
+++ b/tools/dsss_demod_test.c
@@ -0,0 +1,109 @@
+
+#include <stdint.h>
+#include <math.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/fcntl.h>
+
+#include "dsss_demod.h"
+
+void handle_dsss_received(symbol_t data[static TRANSMISSION_SYMBOLS]) {
+ printf("data sequence received: [ ");
+ for (size_t i=0; i<TRANSMISSION_SYMBOLS; i++) {
+ //printf("%+3d", ((data[i]&1) ? 1 : -1) * (data[i]>>1));
+ printf("%2d", data[i]);
+ if (i+1 < TRANSMISSION_SYMBOLS)
+ printf(", ");
+ }
+ printf(" ]\n");
+}
+
+void print_usage() {
+ fprintf(stderr, "Usage: dsss_demod_test [test_data.bin] [optional recording channel number]\n");
+}
+
+int main(int argc, char **argv) {
+ if (argc != 2 && argc != 3) {
+ fprintf(stderr, "Error: Invalid arguments.\n");
+ print_usage();
+ return 1;
+ }
+
+ int fd = open(argv[1], O_RDONLY);
+ struct stat st;
+ if (fstat(fd, &st)) {
+ fprintf(stderr, "Error querying test data file size: %s\n", strerror(errno));
+ return 2;
+ }
+
+ if (st.st_size < 0 || st.st_size > 10000000) {
+ fprintf(stderr, "Error reading test data: too much test data (size=%zd)\n", st.st_size);
+ return 2;
+ }
+
+ if (st.st_size % sizeof(float) != 0) {
+ fprintf(stderr, "Error reading test data: file size is not divisible by %zd (size=%zd)\n", sizeof(float), st.st_size);
+ return 2;
+ }
+
+ char *buf = malloc(st.st_size);
+ if (!buf) {
+ fprintf(stderr, "Error allocating memory");
+ return 2;
+ }
+
+ int record_channel = -1;
+ if (argc == 3) {
+ char *endptr;
+ record_channel = strtoul(argv[2], &endptr, 10);
+ if (!endptr || *endptr != '\0') {
+ fprintf(stderr, "Invalid channel number \"%s\"\n", argv[2]);
+ return 1;
+ }
+ }
+
+ if (record_channel != -1)
+ fprintf(stderr, "Reading %zd samples test data...", st.st_size/sizeof(float));
+ ssize_t nread = 0;
+ while (nread < st.st_size) {
+ ssize_t rc = read(fd, buf + nread, st.st_size - nread);
+
+ if (rc == -EINTR || rc == -EAGAIN)
+ continue;
+
+ if (rc < 0) {
+ fprintf(stderr, "\nError reading test data: %s\n", strerror(errno));
+ return 2;
+ }
+
+ if (rc == 0) {
+ fprintf(stderr, "\nError reading test data: Unexpected end of file\n");
+ return 2;
+ }
+
+ nread += rc;
+ }
+ if (record_channel != -1)
+ fprintf(stderr, " done.\n");
+
+ const size_t n_samples = st.st_size / sizeof(float);
+ float *buf_f = (float *)buf;
+
+ if (record_channel != -1)
+ fprintf(stderr, "Starting simulation.\n");
+
+ struct dsss_demod_state demod;
+ dsss_demod_init(&demod);
+ for (size_t i=0; i<n_samples; i++) {
+ //fprintf(stderr, "Iteration %zd/%zd\n", i, n_samples);
+ dsss_demod_step(&demod, buf_f[i], i);
+ }
+
+ free(buf);
+ return 0;
+}
diff --git a/tools/dsss_demod_test_runner.py b/tools/dsss_demod_test_runner.py
new file mode 100644
index 0000000..d3c3cfc
--- /dev/null
+++ b/tools/dsss_demod_test_runner.py
@@ -0,0 +1,241 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+from os import path
+import subprocess
+import json
+from collections import namedtuple, defaultdict
+from tqdm import tqdm
+import uuid
+import multiprocessing
+import sqlite3
+import time
+from urllib.parse import urlparse
+import tempfile
+import itertools
+
+import numpy as np
+np.set_printoptions(linewidth=240)
+
+from dsss_demod_test_waveform_gen import load_noise_gen, modulate as dsss_modulate
+
+
+def build_test_binary(nbits, thf, decimation, symbols, cachedir):
+ build_id = str(uuid.uuid4())
+ builddir = path.join(cachedir, build_id)
+ os.mkdir(builddir)
+
+ cwd = path.join(path.dirname(__file__), '..')
+
+ env = os.environ.copy()
+ env['BUILDDIR'] = path.abspath(builddir)
+ env['DSSS_GOLD_CODE_NBITS'] = str(nbits)
+ env['DSSS_DECIMATION'] = str(decimation)
+ env['DSSS_THRESHOLD_FACTOR'] = str(thf)
+ env['DSSS_WAVELET_WIDTH'] = str(0.73 * decimation)
+ env['DSSS_WAVELET_LUT_SIZE'] = str(10 * decimation)
+ env['TRANSMISSION_SYMBOLS'] = str(symbols)
+
+ with open(path.join(builddir, 'make_stdout.txt'), 'w') as stdout,\
+ open(path.join(builddir, 'make_stderr.txt'), 'w') as stderr:
+ subprocess.run(['make', 'clean', os.path.abspath(path.join(builddir, 'tools/dsss_demod_test'))],
+ env=env, cwd=cwd, check=True, stdout=stdout, stderr=stderr)
+
+ return build_id
+
+def sequence_matcher(test_data, decoded, max_shift=3):
+ match_result = []
+ for shift in range(-max_shift, max_shift):
+ failures = -shift if shift < 0 else 0 # we're skipping the first $shift symbols
+ a = test_data if shift > 0 else test_data[-shift:]
+ b = decoded if shift < 0 else decoded[shift:]
+ for i, (ref, found) in enumerate(itertools.zip_longest(a, b)):
+ if ref is None: # end of signal
+ break
+ if ref != found:
+ failures += 1
+ match_result.append(failures)
+ failures = min(match_result)
+ return failures/len(test_data)
+
+ResultParams = namedtuple('ResultParams', ['nbits', 'thf', 'decimation', 'symbols', 'seed', 'amplitude', 'background'])
+
+def run_test(seed, amplitude_spec, background, nbits, decimation, symbols, thfs, lookup_binary, cachedir):
+ noise_gen, noise_params = load_noise_gen(background)
+
+ test_data = np.random.RandomState(seed=seed).randint(0, 2 * (2**nbits), symbols)
+
+ signal = np.repeat(dsss_modulate(test_data, nbits) * 2.0 - 1, decimation)
+ # We're re-using the seed here. This is not a problem.
+ noise = noise_gen(seed, len(signal), *noise_params)
+ amplitudes = amplitude_spec[0] * 10 ** np.linspace(0, amplitude_spec[1], amplitude_spec[2])
+ # DEBUG
+ my_pid = multiprocessing.current_process().pid
+ wql = len(amplitudes) * len(thfs)
+ print(f'[{my_pid}] starting, got workqueue of length {wql}')
+ i = 0
+ # Map lsb to sign to match test program
+ # test_data = (test_data>>1) * (2*(test_data&1) - 1)
+ # END DEBUG
+
+ output = []
+ for amp in amplitudes:
+ with tempfile.NamedTemporaryFile(dir=cachedir) as f:
+ waveform = signal*amp + noise
+ f.write(waveform.astype('float32').tobytes())
+ f.flush()
+ # DEBUG
+ fcopy = f'/tmp/test-{path.basename(f.name)}'
+ import shutil
+ shutil.copy(f.name, fcopy)
+ # END DEBUG
+
+ for thf in thfs:
+ rpars = ResultParams(nbits, thf, decimation, symbols, seed, amp, background)
+ cmdline = [lookup_binary(nbits, thf, decimation, symbols), f.name]
+ # DEBUG
+ starttime = time.time()
+ # END DEBUG
+ try:
+ proc = subprocess.run(cmdline, stdout=subprocess.PIPE, encoding='utf-8', check=True, timeout=300)
+
+ lines = proc.stdout.splitlines()
+ matched = [ l.partition('[')[2].partition(']')[0]
+ for l in lines if l.strip().startswith('data sequence received:') ]
+ matched = [ [ int(elem) for elem in l.split(',') ] for l in matched ]
+
+ ser = min(sequence_matcher(test_data, match) for match in matched) if matched else None
+ output.append((rpars, ser))
+ # DEBUG
+ #print(f'[{my_pid}] ran {i}/{wql}: time={time.time() - starttime}\n {ser=}\n {rpars}\n {" ".join(cmdline)}\n {fcopy}', flush=True)
+ i += 1
+ # END DEBUG
+
+ except subprocess.TimeoutExpired:
+ output.append((rpars, None))
+ # DEBUG
+ print(f'[{my_pid}] ran {i}/{wql}: Timeout!\n {rpars}\n {" ".join(cmdline)}\n {fcopy}', flush=True)
+ i += 1
+ # END DEBUG
+ print(f'[{my_pid}] finished.')
+ return output
+
+def parallel_generator(db, table, columns, builder, param_list, desc, context={}, params_mapper=lambda *args: args,
+ disable_cache=False):
+ with multiprocessing.Pool(multiprocessing.cpu_count()) as pool:
+ with db as conn:
+ jobs = []
+ for params in param_list:
+ found_res = conn.execute(
+ f'SELECT result FROM {table} WHERE ({",".join(columns)}) = ({",".join("?"*len(columns))})',
+ params_mapper(*params)).fetchone()
+
+ if found_res and not disable_cache:
+ yield params, json.loads(*found_res)
+
+ else:
+ jobs.append((params, pool.apply_async(builder, params, context)))
+
+ pool.close()
+ print('Using', len(param_list) - len(jobs), 'cached jobs', flush=True)
+ with tqdm(total=len(jobs), desc=desc) as tq:
+ for i, (params, res) in enumerate(jobs):
+ # DEBUG
+ print('Got result', i, params, res)
+ # END DEBUG
+ tq.update(1)
+ result = res.get()
+ with db as conn:
+ conn.execute(f'INSERT INTO {table} VALUES ({"?,"*len(params)}?,?)',
+ (*params_mapper(*params), json.dumps(result), timestamp()))
+ yield params, result
+ pool.join()
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser()
+ parser.add_argument('-d', '--dump', help='Write results to JSON file')
+ parser.add_argument('-c', '--cachedir', default='dsss_test_cache', help='Directory to store build output and data in')
+ parser.add_argument('-n', '--no-cache', action='store_true', help='Disable result cache')
+ parser.add_argument('-b', '--batches', type=int, default=1, help='Number of batches to split the computation into')
+ parser.add_argument('-i', '--index', type=int, default=0, help='Batch index to compute')
+ parser.add_argument('-p', '--prepare', action='store_true', help='Prepare mode: compile runners, then exit.')
+ args = parser.parse_args()
+
+ DecoderParams = namedtuple('DecoderParams', ['nbits', 'thf', 'decimation', 'symbols'])
+# dec_paramses = [ DecoderParams(nbits=nbits, thf=thf, decimation=decimation, symbols=20)
+# for nbits in [5, 6]
+# for thf in [4.5, 4.0, 5.0]
+# for decimation in [10, 5, 22] ]
+ dec_paramses = [ DecoderParams(nbits=nbits, thf=thf, decimation=decimation, symbols=100)
+ for nbits in [5, 6]
+ for thf in [3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0]
+ for decimation in [1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 16, 22, 30, 40, 50] ]
+# dec_paramses = [ DecoderParams(nbits=nbits, thf=thf, decimation=decimation, symbols=100)
+# for nbits in [5, 6, 7, 8]
+# for thf in [1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0]
+# for decimation in [1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 16, 22, 30, 40, 50] ]
+
+ build_cache_dir = path.join(args.cachedir, 'builds')
+ data_cache_dir = path.join(args.cachedir, 'data')
+ os.makedirs(build_cache_dir, exist_ok=True)
+ os.makedirs(data_cache_dir, exist_ok=True)
+
+ build_db = sqlite3.connect(path.join(args.cachedir, 'build_db.sqlite3'))
+ build_db.execute('CREATE TABLE IF NOT EXISTS builds (nbits, thf, decimation, symbols, result, timestamp)')
+ timestamp = lambda: int(time.time()*1000)
+
+ builds = dict(parallel_generator(build_db, table='builds', columns=['nbits', 'thf', 'decimation', 'symbols'],
+ builder=build_test_binary, param_list=dec_paramses, desc='Building decoders',
+ context=dict(cachedir=build_cache_dir)))
+ print('Done building decoders.')
+ if args.prepare:
+ sys.exit(0)
+
+ GeneratorParams = namedtuple('GeneratorParams', ['seed', 'amplitude_spec', 'background'])
+ gen_params = [ GeneratorParams(rep, (5e-3, 1, 5), background)
+ #GeneratorParams(rep, (0.05e-3, 3.5, 50), background)
+ for rep in range(50)
+ for background in ['meas://fmeas_export_ocxo_2day.bin', 'synth://grid_freq_psd_spl_108pt.json'] ]
+# gen_params = [ GeneratorParams(rep, (5e-3, 1, 5), background)
+# for rep in range(1)
+# for background in ['meas://fmeas_export_ocxo_2day.bin'] ]
+
+ data_db = sqlite3.connect(path.join(args.cachedir, 'data_db.sqlite3'))
+ data_db.execute('CREATE TABLE IF NOT EXISTS waveforms'
+ '(seed, amplitude_spec, background, nbits, decimation, symbols, thresholds, result, timestamp)')
+
+ 'SELECT FROM waveforms GROUP BY (amplitude_spec, background, nbits, decimation, symbols, thresholds, result)'
+
+ dec_param_groups = defaultdict(lambda: [])
+ for nbits, thf, decimation, symbols in dec_paramses:
+ dec_param_groups[(nbits, decimation, symbols)].append(thf)
+ waveform_params = [ (*gp, *dp, thfs) for gp in gen_params for dp, thfs in dec_param_groups.items() ]
+ print(f'Generated {len(waveform_params)} parameter sets')
+
+ # Separate out our batch
+ waveform_params = waveform_params[args.index::args.batches]
+
+ def lookup_binary(*params):
+ return path.join(build_cache_dir, builds[tuple(params)], 'tools/dsss_demod_test')
+
+ def params_mapper(seed, amplitude_spec, background, nbits, decimation, symbols, thresholds):
+ amplitude_spec = ','.join(str(x) for x in amplitude_spec)
+ thresholds = ','.join(str(x) for x in thresholds)
+ return seed, amplitude_spec, background, nbits, decimation, symbols, thresholds
+
+ results = []
+ for _params, chunk in parallel_generator(data_db, 'waveforms',
+ ['seed', 'amplitude_spec', 'background', 'nbits', 'decimation', 'symbols', 'thresholds'],
+ params_mapper=params_mapper,
+ builder=run_test,
+ param_list=waveform_params, desc='Simulating demodulation',
+ context=dict(cachedir=data_cache_dir, lookup_binary=lookup_binary),
+ disable_cache=args.no_cache):
+ results += chunk
+
+ if args.dump:
+ with open(args.dump, 'w') as f:
+ json.dump(results, f)
+
diff --git a/tools/dsss_demod_test_waveform_gen.py b/tools/dsss_demod_test_waveform_gen.py
new file mode 100644
index 0000000..414c553
--- /dev/null
+++ b/tools/dsss_demod_test_waveform_gen.py
@@ -0,0 +1,86 @@
+
+from os import path
+import json
+import functools
+
+import numpy as np
+import numbers
+import math
+from scipy import signal as sig
+import scipy.fftpack
+
+sampling_rate = 10 # sp/s
+
+# From https://github.com/mubeta06/python/blob/master/signal_processing/sp/gold.py
+preferred_pairs = {5:[[2],[1,2,3]], 6:[[5],[1,4,5]], 7:[[4],[4,5,6]],
+ 8:[[1,2,3,6,7],[1,2,7]], 9:[[5],[3,5,6]],
+ 10:[[2,5,9],[3,4,6,8,9]], 11:[[9],[3,6,9]]}
+
+def gen_gold(seq1, seq2):
+ gold = [seq1, seq2]
+ for shift in range(len(seq1)):
+ gold.append(seq1 ^ np.roll(seq2, -shift))
+ return gold
+
+def gold(n):
+ n = int(n)
+ if not n in preferred_pairs:
+ raise KeyError('preferred pairs for %s bits unknown' % str(n))
+ t0, t1 = preferred_pairs[n]
+ (seq0, _st0), (seq1, _st1) = sig.max_len_seq(n, taps=t0), sig.max_len_seq(n, taps=t1)
+ return gen_gold(seq0, seq1)
+
+def modulate(data, nbits=5):
+ # 0, 1 -> -1, 1
+ mask = np.array(gold(nbits))*2 - 1
+
+ sel = mask[data>>1]
+ data_lsb_centered = ((data&1)*2 - 1)
+
+ signal = (np.multiply(sel, np.tile(data_lsb_centered, (2**nbits-1, 1)).T).flatten() + 1) // 2
+ return np.hstack([ np.zeros(len(mask)), signal, np.zeros(len(mask)) ])
+
+def load_noise_meas_params(capture_file):
+ with open(capture_file, 'rb') as f:
+ meas_data = np.copy(np.frombuffer(f.read(), dtype='float32'))
+ meas_data -= np.mean(meas_data)
+ return (meas_data,)
+
+def mains_noise_measured(seed, n, meas_data):
+ last_valid = len(meas_data) - n
+ st = np.random.RandomState(seed)
+ start = st.randint(last_valid)
+ return meas_data[start:start+n] + 50.00
+
+def load_noise_synth_params(specfile):
+ with open(specfile) as f:
+ d = json.load(f)
+ return {'spl_x': np.linspace(*d['x_spec']),
+ 'spl_N': d['x_spec'][2],
+ 'psd_spl': (d['t'], d['c'], d['k']) }
+
+def mains_noise_synthetic(seed, n, psd_spl, spl_N, spl_x):
+ st = np.random.RandomState(seed)
+ noise = st.normal(size=spl_N) * 2
+ spec = scipy.fftpack.fft(noise) **2
+
+ spec *= np.exp(scipy.interpolate.splev(spl_x, psd_spl))
+
+ spec **= 1/2
+
+ renoise = scipy.fftpack.ifft(spec)
+ return renoise[10000:][:n] + 50.00
+
+@functools.lru_cache()
+def load_noise_gen(url):
+ schema, refpath = url.split('://')
+ if not path.isabs(refpath):
+ refpath = path.abspath(path.join(path.dirname(__file__), refpath))
+
+ if schema == 'meas':
+ return mains_noise_measured, load_noise_meas_params(refpath)
+ elif schema == 'synth':
+ return mains_noise_synthetic, load_noise_synth_params(refpath)
+ else:
+ raise ValueError('Invalid schema', schema)
+
diff --git a/tools/e2e_test.c b/tools/e2e_test.c
new file mode 100644
index 0000000..935f70d
--- /dev/null
+++ b/tools/e2e_test.c
@@ -0,0 +1,111 @@
+
+#include <stdint.h>
+#include <math.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/fcntl.h>
+
+#include "freq_meas.h"
+#include "dsss_demod.h"
+
+typedef uint16_t adc_data_t;
+
+void handle_dsss_received(uint8_t data[static TRANSMISSION_SYMBOLS]) {
+ printf("data sequence received: [ ");
+ for (size_t i=0; i<TRANSMISSION_SYMBOLS; i++) {
+ printf("%+3d", ((data[i]&1) ? 1 : -1) * (data[i]>>1));
+ if (i+1 < TRANSMISSION_SYMBOLS)
+ printf(", ");
+ }
+ printf(" ]\n");
+}
+
+void print_usage(void);
+void print_usage() {
+ fprintf(stderr, "Usage: e2e_test [emulated_adc_data.bin]\n");
+}
+
+int main(int argc, char **argv) {
+ if (argc != 2) {
+ fprintf(stderr, "Error: Invalid arguments.\n");
+ print_usage();
+ return 1;
+ }
+
+ int fd = open(argv[1], O_RDONLY);
+ struct stat st;
+ if (fstat(fd, &st)) {
+ fprintf(stderr, "Error querying test data file size: %s\n", strerror(errno));
+ return 2;
+ }
+
+ if (st.st_size < 0 || st.st_size > 100000000) {
+ fprintf(stderr, "Error reading test data: too much test data (size=%zd)\n", st.st_size);
+ return 2;
+ }
+
+ if (st.st_size % sizeof(adc_data_t) != 0) {
+ fprintf(stderr, "Error reading test data: file size is not divisible by %zd (size=%zd)\n", sizeof(adc_data_t), st.st_size);
+ return 2;
+ }
+
+ char *buf = malloc(st.st_size);
+ if (!buf) {
+ fprintf(stderr, "Error allocating memory");
+ return 2;
+ }
+
+ const size_t n_samples = st.st_size / sizeof(adc_data_t);
+ fprintf(stderr, "Reading %zd samples test data...", n_samples);
+ ssize_t nread = 0;
+ while (nread < st.st_size) {
+ ssize_t rc = read(fd, buf + nread, st.st_size - nread);
+
+ if (rc == -EINTR || rc == -EAGAIN)
+ continue;
+
+ if (rc < 0) {
+ fprintf(stderr, "\nError reading test data: %s\n", strerror(errno));
+ return 2;
+ }
+
+ if (rc == 0) {
+ fprintf(stderr, "\nError reading test data: Unexpected end of file\n");
+ return 2;
+ }
+
+ nread += rc;
+ }
+ fprintf(stderr, " done. Read %zd bytes.\n", nread);
+
+ adc_data_t *buf_d = (adc_data_t *)buf;
+
+ struct dsss_demod_state demod;
+ dsss_demod_init(&demod);
+
+ fprintf(stderr, "Starting simulation.\n");
+ size_t iterations = (n_samples-FMEAS_FFT_LEN)/(FMEAS_FFT_LEN/2);
+ for (size_t i=0; i<iterations; i++) {
+
+ /*
+ fprintf(stderr, "Iteration %zd/%zd\n", i, iterations);
+ */
+ float res = NAN;
+ int rc = adc_buf_measure_freq(buf_d + i*(FMEAS_FFT_LEN/2), &res);
+ if (rc)
+ printf("ERROR: Simulation error in iteration %zd at position %zd: %d\n", i, i*(FMEAS_FFT_LEN/2), rc);
+
+ dsss_demod_step(&demod, res, i);
+ /*
+ printf("%09zd %12f\n", i, res);
+ */
+ }
+
+ free(buf);
+ return 0;
+}
diff --git a/tools/fft_window_header_gen.py b/tools/fft_window_header_gen.py
new file mode 100644
index 0000000..7df2ee3
--- /dev/null
+++ b/tools/fft_window_header_gen.py
@@ -0,0 +1,59 @@
+#!/usr/bin/env python3
+
+import textwrap
+
+import scipy.signal as sig
+import numpy as np
+
+WINDOW_TYPES = [
+ 'boxcar',
+ 'triang',
+ 'blackman',
+ 'hamming',
+ 'hann',
+ 'bartlett',
+ 'flattop',
+ 'parzen',
+ 'bohman',
+ 'blackmanharris',
+ 'nuttall',
+ 'barthann',
+ 'kaiser',
+ 'gaussian',
+ 'general_gaussian',
+ 'slepian',
+ 'dpss',
+ 'chebwin',
+ 'exponential',
+ 'tukey',
+ ]
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser()
+ parser.add_argument('window', choices=WINDOW_TYPES, help='Type of window function to use')
+ parser.add_argument('n', type=int, help='Width of window in samples')
+ parser.add_argument('window_args', nargs='*', type=float,
+ help='''Window argument(s) if required. See https://docs.scipy.org/doc/scipy/reference/generated/scipy.signal.get_window.html#scipy.signal.get_window for details.''')
+ parser.add_argument('-v', '--variable', default='fft_window_table', help='Name for alias variable pointing to generated window')
+ args = parser.parse_args()
+
+ print(f'/* FTT window table for {args.n} sample {args.window} window.')
+ if args.window_args:
+ print(f' * Window arguments were: ({" ,".join(str(arg) for arg in args.window_args)})')
+ print(f' */')
+ winargs = ''.join(f'_{arg:.4g}'.replace('.', 'F') for arg in args.window_args)
+ varname = f'fft_{args.n}_window_{args.window}{winargs}'
+ print(f'const float {varname}[{args.n}] = {{')
+
+ win = sig.get_window(args.window if not args.window_args else (args.window, *args.window_args),
+ Nx=args.n, fftbins=True)
+ par = ' '.join(f'{f:>013.8g},' for f in win)
+ print(textwrap.fill(par,
+ initial_indent=' '*4, subsequent_indent=' '*4,
+ width=120,
+ replace_whitespace=False, drop_whitespace=False))
+ print('};')
+ print()
+ print(f'const float * const {args.variable} __attribute__((weak)) = {varname};')
+
diff --git a/tools/fmeas_export_ocxo_2day.bin b/tools/fmeas_export_ocxo_2day.bin
new file mode 100644
index 0000000..c0cd8a8
--- /dev/null
+++ b/tools/fmeas_export_ocxo_2day.bin
Binary files differ
diff --git a/tools/freq_meas_test.c b/tools/freq_meas_test.c
new file mode 100644
index 0000000..e2900ad
--- /dev/null
+++ b/tools/freq_meas_test.c
@@ -0,0 +1,106 @@
+
+#include <stdint.h>
+#include <math.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/fcntl.h>
+
+#include "freq_meas.h"
+
+void print_usage(void);
+
+void print_usage() {
+ fprintf(stderr, "Usage: freq_meas_test [test_data.bin]\n");
+}
+
+int main(int argc, char **argv) {
+ if (argc != 2) {
+ fprintf(stderr, "Error: Invalid arguments.\n");
+ print_usage();
+ return 1;
+ }
+
+ int fd = open(argv[1], O_RDONLY);
+ struct stat st;
+ if (fstat(fd, &st)) {
+ fprintf(stderr, "Error querying test data file size: %s\n", strerror(errno));
+ return 2;
+ }
+
+ if (st.st_size < 0 || st.st_size > 1000000) {
+ fprintf(stderr, "Error reading test data: too much test data (size=%zd)\n", st.st_size);
+ return 2;
+ }
+
+ if (st.st_size % sizeof(float) != 0) {
+ fprintf(stderr, "Error reading test data: file size is not divisible by %zd (size=%zd)\n", sizeof(float), st.st_size);
+ return 2;
+ }
+
+ char *buf = malloc(st.st_size);
+ if (!buf) {
+ fprintf(stderr, "Error allocating memory");
+ return 2;
+ }
+
+ fprintf(stderr, "Reading %zd samples test data...", st.st_size/sizeof(float));
+ ssize_t nread = 0;
+ while (nread < st.st_size) {
+ ssize_t rc = read(fd, buf + nread, st.st_size - nread);
+
+ if (rc == -EINTR || rc == -EAGAIN)
+ continue;
+
+ if (rc < 0) {
+ fprintf(stderr, "\nError reading test data: %s\n", strerror(errno));
+ return 2;
+ }
+
+ if (rc == 0) {
+ fprintf(stderr, "\nError reading test data: Unexpected end of file\n");
+ return 2;
+ }
+
+ nread += rc;
+ }
+ fprintf(stderr, " done.\n");
+
+ const size_t n_samples = st.st_size / sizeof(float);
+ float *buf_f = (float *)buf;
+
+ int16_t *sim_adc_buf = calloc(sizeof(int16_t), n_samples);
+ if (!sim_adc_buf) {
+ fprintf(stderr, "Error allocating memory\n");
+ return 2;
+ }
+
+ fprintf(stderr, "Converting and truncating test data...");
+ for (size_t i=0; i<n_samples; i++)
+ /* Note on scaling: We can't simply scale by 0x8000 (1/2 full range) here. Our test data is nominally 1Vp-p but
+ * certain tests such as the interharmonics one can have some samples exceeding that range. */
+ sim_adc_buf[i] = buf_f[i] * (0x4000-1);
+ fprintf(stderr, " done.\n");
+
+ fprintf(stderr, "Starting simulation.\n");
+
+ size_t iterations = (n_samples-FMEAS_FFT_LEN)/(FMEAS_FFT_LEN/2);
+ for (size_t i=0; i<iterations; i++) {
+
+ fprintf(stderr, "Iteration %zd/%zd\n", i, iterations);
+ float res = NAN;
+ int rc = adc_buf_measure_freq(sim_adc_buf + i*(FMEAS_FFT_LEN/2), &res);
+ if (rc)
+ printf("ERROR: Simulation error in iteration %zd at position %zd: %d\n", i, i*(FMEAS_FFT_LEN/2), rc);
+
+ printf("%09zd %12f\n", i, res);
+ }
+
+ free(buf);
+ free(sim_adc_buf);
+ return 0;
+}
diff --git a/tools/freq_meas_test_runner.py b/tools/freq_meas_test_runner.py
new file mode 100644
index 0000000..779922a
--- /dev/null
+++ b/tools/freq_meas_test_runner.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+
+import os
+from os import path
+import subprocess
+import json
+
+import numpy as np
+np.set_printoptions(linewidth=240)
+
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser()
+ parser.add_argument(metavar='test_data_directory', dest='dir', help='Directory with test data .bin files')
+ default_binary = path.abspath(path.join(path.dirname(__file__), '../build/tools/freq_meas_test'))
+ parser.add_argument(metavar='test_binary', dest='binary', nargs='?', default=default_binary)
+ parser.add_argument('-d', '--dump', help='Write raw measurements to JSON file')
+ args = parser.parse_args()
+
+ bin_files = [ path.join(args.dir, d) for d in os.listdir(args.dir) if d.lower().endswith('.bin') ]
+
+ savedata = {}
+ for p in bin_files:
+ output = subprocess.check_output([args.binary, p], stderr=subprocess.DEVNULL)
+ measurements = np.array([ float(value) for _offset, value in [ line.split() for line in output.splitlines() ] ])
+ savedata[p] = list(measurements)
+
+ # Cut off first and last sample for mean and RMS calculations as these show boundary effects.
+ measurements = measurements[1:-1]
+ mean = np.mean(measurements)
+ rms = np.sqrt(np.mean(np.square(measurements - mean)))
+
+ print(f'{path.basename(p):<60}: mean={mean:<8.4f}Hz rms={rms*1000:.3f}mHz')
+
+ if args.dump:
+ with open(args.dump, 'w') as f:
+ json.dump(savedata, f)
+
diff --git a/tools/gold_code_header_gen.py b/tools/gold_code_header_gen.py
new file mode 100644
index 0000000..fa98fce
--- /dev/null
+++ b/tools/gold_code_header_gen.py
@@ -0,0 +1,70 @@
+#!/usr/bin/env python3
+
+import sys
+import math
+import textwrap
+import contextlib
+
+import numpy as np
+import scipy.signal as sig
+
+# From https://github.com/mubeta06/python/blob/master/signal_processing/sp/gold.py
+preferred_pairs = {5:[[2],[1,2,3]], 6:[[5],[1,4,5]], 7:[[4],[4,5,6]],
+ 8:[[1,2,3,6,7],[1,2,7]], 9:[[5],[3,5,6]],
+ 10:[[2,5,9],[3,4,6,8,9]], 11:[[9],[3,6,9]]}
+
+def gen_gold(seq1, seq2):
+ gold = [seq1, seq2]
+ for shift in range(len(seq1)):
+ gold.append(seq1 ^ np.roll(seq2, -shift))
+ return gold
+
+def gold(n):
+ n = int(n)
+ if not n in preferred_pairs:
+ raise KeyError('preferred pairs for %s bits unknown' % str(n))
+ t0, t1 = preferred_pairs[n]
+ (seq0, _st0), (seq1, _st1) = sig.max_len_seq(n, taps=t0), sig.max_len_seq(n, taps=t1)
+ return gen_gold(seq0, seq1)
+
+@contextlib.contextmanager
+def print_include_guards(macro_name):
+ print(f'#ifndef {macro_name}')
+ print(f'#define {macro_name}')
+ yield
+ print(f'#endif /* {macro_name} */')
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser(add_help=False)
+ parser.add_argument('n', type=int, choices=preferred_pairs, help='bit width of shift register. Generate 2**n + 1 sequences of length 2**n - 1.')
+ parser.add_argument('-v', '--variable', default='gold_code_table', help='Name for weak alias of generated table')
+ parser.add_argument('-h', '--header', action='store_true', help='Generate header file')
+ parser.add_argument('-c', '--source', action='store_true', help='Generate table source file')
+ args = parser.parse_args()
+
+ if not args.header != args.source:
+ print('Exactly one of --header and --source must be given.', file=sys.stderr)
+ sys.exit(1)
+
+ nbytes = math.ceil((2**args.n-1)/8)
+
+ if args.source:
+ print('/* THIS IS A GENERATED FILE. DO NOT EDIT! */')
+ print('#include <unistd.h>')
+ print('#include <stdint.h>')
+ print()
+ print(f'/* {args.n} bit gold sequences: {2**args.n+1} sequences of length {2**args.n-1} bit.')
+ print(f' *')
+ print(f' * Each code is packed left-aligned into {nbytes} bytes in big-endian byte order.')
+ print(f' */')
+ print(f'const uint8_t {args.variable}[{2**args.n+1}][{nbytes}] = {{')
+ for i, code in enumerate(gold(args.n)):
+ par = '{' + ' '.join(f'0x{d:02x},' for d in np.packbits(code)) + f'}}, /* {i: 3d} "{"".join(str(x) for x in code)}" */'
+ print(textwrap.fill(par, initial_indent=' '*4, subsequent_indent=' '*4, width=120))
+ print('};')
+ print()
+ else:
+ print('/* THIS IS A GENERATED FILE. DO NOT EDIT! */')
+ with print_include_guards(f'__GOLD_CODE_GENERATED_HEADER_{args.n}__'):
+ print(f'extern const uint8_t {args.variable}[{2**args.n+1}][{nbytes}];')
diff --git a/tools/grid_freq_psd_spl_108pt.json b/tools/grid_freq_psd_spl_108pt.json
new file mode 100644
index 0000000..5a0ff41
--- /dev/null
+++ b/tools/grid_freq_psd_spl_108pt.json
@@ -0,0 +1 @@
+{"x_spec": [3.2595692805152726e-05, 5.0, 613575], "t": [3.2595692805152726e-05, 3.2595692805152726e-05, 3.2595692805152726e-05, 3.2595692805152726e-05, 0.0001423024947075771, 0.00015800362803968106, 0.00017543716661470822, 0.00019479425764873777, 0.0002162871388378975, 0.00024015146540428407, 0.00026664889389955537, 0.00029606995109590574, 0.00032873721941990017, 0.0003650088738553592, 0.0004052826090950758, 0.00045000000000000004, 0.000499651343175437, 0.0005547810327489297, 0.0006159935292916862, 0.0006839599873288199, 0.0007594256141046668, 0.0008432178402871724, 0.0009362553921977272, 0.0010395583650374223, 0.0011542594075560205, 0.001281616140796111, 0.0014230249470757708, 0.001580036280396809, 0.0017543716661470824, 0.0019479425764873776, 0.002162871388378975, 0.0024015146540428403, 0.002666488938995554, 0.002960699510959057, 0.0032873721941990056, 0.0036500887385535925, 0.004052826090950754, 0.0045000000000000005, 0.00499651343175437, 0.005547810327489296, 0.006159935292916869, 0.0068395998732882, 0.007594256141046669, 0.008432178402871724, 0.009362553921977271, 0.010395583650374221, 0.011542594075560205, 0.012816161407961109, 0.014230249470757707, 0.01580036280396809, 0.017543716661470823, 0.01947942576487376, 0.02162871388378975, 0.024015146540428405, 0.026664889389955565, 0.02960699510959057, 0.03287372194199005, 0.036500887385535925, 0.04052826090950754, 0.045, 0.0499651343175437, 0.05547810327489296, 0.06159935292916863, 0.06839599873288206, 0.07594256141046668, 0.08432178402871732, 0.09362553921977272, 0.10395583650374222, 0.11542594075560206, 0.12816161407961107, 0.14230249470757705, 0.15800362803968088, 0.1754371666147082, 0.1947942576487376, 0.21628713883789774, 0.24015146540428406, 0.26664889389955565, 0.2960699510959057, 0.32873721941990053, 0.36500887385535924, 0.40528260909507535, 0.45, 0.499651343175437, 0.5547810327489296, 0.6159935292916868, 0.6839599873288206, 0.7594256141046669, 0.8432178402871732, 0.9362553921977271, 1.0395583650374223, 1.1542594075560206, 1.2816161407961109, 1.4230249470757708, 1.5800362803968104, 1.7543716661470823, 1.9479425764873777, 2.162871388378975, 2.4015146540428405, 2.6664889389955535, 2.960699510959057, 3.287372194199002, 3.6500887385535927, 4.052826090950758, 4.5, 5.0, 5.0, 5.0, 5.0], "c": [0.7720161468716866, -0.5547528253056444, 0.30706059086000753, 0.19422577014134906, -1.1954636661840032, 0.9215976941641111, -0.6668136393976918, -1.341269161156733, -0.16311330594842666, -1.7639636752234251, -1.238385544822954, -0.32649555618555554, -0.03086589610280171, -2.358195657381619, -0.5759152419849985, 0.1892225800004134, -1.8122889670546236, -0.8109120798216202, -0.5500991736738969, -4.680192969256771, -2.8007700704649876, 0.16866469558571784, -1.1040811840849307, -3.0243574268705546, -4.018139927365795, -4.100581028618109, -0.556354762846191, -7.414377514669229, 1.36396325920194, -6.002559557058508, -2.2113451390305365, -4.578944771104116, -4.372644849632638, -3.945339124673235, -4.778747958903158, -2.370174137632325, -5.7372466088109295, -4.707506574819875, -4.834404729330929, -5.005244244061701, -5.82644896783577, -4.717966026411524, -6.146374820241562, -4.972788381244952, -5.854957092953355, -5.702174935205885, -6.222035857079607, -6.2128389666872, -6.212821706753751, -6.253599689326325, -6.681685577659057, -6.372364384360678, -6.771223202540934, -6.856809137231159, -6.986412256164045, -7.190466178818742, -7.577896455149433, -7.515731696006047, -7.598155006351761, -7.824526916149126, -8.141496591776512, -8.36794927682997, -8.80307396767114, -8.828816533544659, -9.357524260470413, -9.658130054343863, -10.005768472049466, -10.499801262514108, -11.028689820560558, -11.413688641742898, -11.906162042727946, -12.232342460719975, -12.438432746733596, -13.088338100203112, -12.308710772618745, -11.685074853925329, -11.397838681243094, -12.265219694936695, -13.600359694898529, -14.031425961884718, -12.236885080485473, -13.527508426900974, -13.698402018452601, -13.397911198962568, -14.144410560196603, -13.905769594095293, -14.410874830544122, -14.531727635304264, -14.59275291853806, -14.35404826562502, -14.58670053318149, -14.432515268864977, -14.363428024828353, -14.429222027493264, -14.73947634127499, -14.717315405960353, -14.678539669792505, -14.825278423641382, -14.80936417940876, -14.943375264882789, -14.680885181815674, -14.54841244844906, -14.634365225950589, -14.609444790868906, 0.0, 0.0, 0.0, 0.0], "k": 3} \ No newline at end of file
diff --git a/tools/hum_generator.py b/tools/hum_generator.py
new file mode 100644
index 0000000..fbcabac
--- /dev/null
+++ b/tools/hum_generator.py
@@ -0,0 +1,111 @@
+#!/usr/bin/env python
+# coding: utf-8
+
+import binascii
+import struct
+
+import numpy as np
+import pydub
+
+from dsss_demod_test_waveform_gen import load_noise_gen, modulate as dsss_modulate
+
+np.set_printoptions(linewidth=240)
+
+def generate_noisy_signal(
+ test_data=32,
+ test_nbits=5,
+ test_decimation=10,
+ test_signal_amplitude=20e-3,
+ noise_level=10e-3,
+ noise_spec='synth://grid_freq_psd_spl_108pt.json',
+ seed=0):
+
+ #test_data = np.random.RandomState(seed=0).randint(0, 2 * (2**test_nbits), test_duration)
+ #test_data = np.array([0, 1, 2, 3] * 50)
+ if isinstance(test_data, int):
+ test_data = np.array(range(test_data))
+
+
+ signal = np.repeat(dsss_modulate(test_data, test_nbits) * 2.0 - 1, test_decimation)
+
+ noise_gen, noise_params = load_noise_gen(noise_spec)
+ noise = noise_gen(seed, len(signal), **noise_params)
+ return np.absolute(noise + signal*test_signal_amplitude)
+
+def write_raw_frequencies_bin(outfile, **kwargs):
+ with open(outfile, 'wb') as f:
+ for x in generate_noisy_signal(**kwargs):
+ f.write(struct.pack('f', x))
+
+def synthesize_sine(freqs, freqs_sampling_rate=10.0, output_sampling_rate=44100):
+ duration = len(freqs) / freqs_sampling_rate # seconds
+ afreq_out = np.interp(np.linspace(0, duration, int(duration*output_sampling_rate)), np.linspace(0, duration, len(freqs)), freqs)
+ return np.sin(np.cumsum(2*np.pi * afreq_out / output_sampling_rate))
+
+def write_flac(filename, signal, sampling_rate=44100):
+ signal -= np.min(signal)
+ signal /= np.max(signal)
+ signal -= 0.5
+ signal *= 2**16 - 1
+ le_bytes = signal.astype(np.int16).tobytes()
+ seg = pydub.AudioSegment(data=le_bytes, sample_width=2, frame_rate=sampling_rate, channels=1)
+ seg.export(filename, format='flac')
+
+def write_synthetic_hum_flac(filename, output_sampling_rate=44100, freqs_sampling_rate=10.0, **kwargs):
+ signal = generate_noisy_signal(**kwargs)
+ print(signal)
+ write_flac(filename, synthesize_sine(signal, freqs_sampling_rate, output_sampling_rate),
+ sampling_rate=output_sampling_rate)
+
+def emulate_adc_signal(adc_bits=12, adc_offset=0.4, adc_amplitude=0.25, freq_sampling_rate=10.0, output_sampling_rate=1000, **kwargs):
+ signal = synthesize_sine(generate_noisy_signal(), freq_sampling_rate, output_sampling_rate)
+ signal = signal*adc_amplitude + adc_offset
+ smin, smax = np.min(signal), np.max(signal)
+ if smin < 0.0 or smax > 1.0:
+ raise UserWarning('Amplitude or offset too large: Signal out of bounds with min/max [{smin}, {smax}] of ADC range')
+ signal *= 2**adc_bits -1
+ return signal
+
+def save_adc_signal(fn, signal, dtype=np.uint16):
+ with open(fn, 'wb') as f:
+ f.write(signal.astype(dtype).tobytes())
+
+def write_emulated_adc_signal_bin(filename, **kwargs):
+ save_adc_signal(filename, emulate_adc_signal(**kwargs))
+
+def hum_cmd(args):
+ write_synthetic_hum_flac(args.out_flac,
+ output_sampling_rate=args.audio_sampling_rate,
+ freqs_sampling_rate=args.frequency_sampling_rate,
+ test_data = np.array(list(binascii.unhexlify(args.data))),
+ test_nbits = args.symbol_bits,
+ test_decimation = args.decimation,
+ test_signal_amplitude = args.signal_level/1e3,
+ noise_level = args.noise_level/1e3,
+ noise_spec=args.noise_spec,
+ seed = args.random_seed)
+
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser()
+ cmd_parser = parser.add_subparsers(required=True)
+ hum_parser = cmd_parser.add_parser('hum', help='Generated artificial modulated mains hum')
+ # output parameters
+ hum_parser.add_argument('-a', '--audio-sampling-rate', type=int, default=44100)
+
+ # modulation parameters
+ hum_parser.add_argument('-f', '--frequency-sampling-rate', type=float, default=10.0*100/128)
+ hum_parser.add_argument('-b', '--symbol-bits', type=int, default=5, help='bits per symbol (excluding sign bit)')
+ hum_parser.add_argument('-n', '--noise-level', type=float, default=1.0, help='Scale synthetic noise level')
+ hum_parser.add_argument('-s', '--signal-level', type=float, default=20.0, help='Synthetic noise level in mHz')
+ hum_parser.add_argument('-d', '--decimation', type=int, default=10, help='DSSS modulation decimation in frequency measurement cycles')
+ hum_parser.add_argument('-r', '--random-seed', type=int, default=0)
+ hum_parser.add_argument('--noise-spec', type=str, default='synth://grid_freq_psd_spl_108pt.json')
+ hum_parser.add_argument('out_flac', metavar='out.flac', help='FLAC output file')
+ hum_parser.add_argument('data', help='modulation data hex string')
+ hum_parser.set_defaults(func=hum_cmd)
+
+ args = parser.parse_args()
+ args.func(args)
+
diff --git a/tools/ldparser.py b/tools/ldparser.py
new file mode 100644
index 0000000..c620fe2
--- /dev/null
+++ b/tools/ldparser.py
@@ -0,0 +1,126 @@
+
+import sys
+
+import pyparsing as pp
+from pyparsing import pyparsing_common as ppc
+
+LPAREN, RPAREN, LBRACE, RBRACE, LBROK, RBROK, COLON, SEMICOLON, EQUALS, COMMA = map(pp.Suppress, '(){}<>:;=,')
+
+parse_suffix_int = lambda lit: int(lit[:-1]) * (10**(3*(1 + 'kmgtpe'.find(lit[-1].lower()))))
+si_suffix = pp.oneOf('k m g t p e', caseless=True)
+
+numeric_literal = pp.Regex('0x[0-9a-fA-F]+').setName('hex int').setParseAction(pp.tokenMap(int, 16)) \
+ | (pp.Regex('[0-9]+[kKmMgGtTpPeE]')).setName('size int').setParseAction(pp.tokenMap(parse_suffix_int)) \
+ | pp.Word(pp.nums).setName('int').setParseAction(pp.tokenMap(int))
+access_def = pp.Regex('[rR]?[wW]?[xX]?').setName('access literal').setParseAction(pp.tokenMap(str.lower))
+
+origin_expr = pp.Suppress(pp.CaselessKeyword('ORIGIN')) + EQUALS + numeric_literal
+length_expr = pp.Suppress(pp.CaselessKeyword('LENGTH')) + EQUALS + numeric_literal
+mem_expr = pp.Group(ppc.identifier + LPAREN + access_def + RPAREN + COLON + origin_expr + COMMA + length_expr)
+mem_contents = pp.ZeroOrMore(mem_expr)
+
+mem_toplevel = pp.CaselessKeyword("MEMORY") + pp.Group(LBRACE + pp.Optional(mem_contents, []) + RBRACE)
+
+glob = pp.Word(pp.alphanums + '._*')
+match_expr = pp.Forward()
+assignment = pp.Forward()
+funccall = pp.Group(pp.Word(pp.alphas + '_') + LPAREN + (assignment | numeric_literal | match_expr | glob | ppc.identifier) + RPAREN + pp.Optional(SEMICOLON))
+value = numeric_literal | funccall | ppc.identifier | '.'
+formula = (value + pp.oneOf('+ = * / %') + value) | value
+# suppress stray semicolons
+assignment << (SEMICOLON | pp.Group((ppc.identifier | '.') + EQUALS + (formula | value) + pp.Optional(SEMICOLON)))
+match_expr << (glob + LPAREN + pp.OneOrMore(funccall | glob) + RPAREN)
+
+section_contents = pp.ZeroOrMore(assignment | funccall | match_expr);
+
+section_name = pp.Regex('\.[a-zA-Z0-9_.]+')
+section_def = pp.Group(section_name + pp.Optional(numeric_literal) + COLON + LBRACE + pp.Group(section_contents) +
+ RBRACE + pp.Optional(RBROK + ppc.identifier + pp.Optional('AT' + RBROK + ppc.identifier)))
+sec_contents = pp.ZeroOrMore(section_def | assignment)
+
+sections_toplevel = pp.Group(pp.CaselessKeyword("SECTIONS").suppress() + LBRACE + sec_contents + RBRACE)
+
+toplevel_elements = mem_toplevel | funccall | sections_toplevel | assignment
+ldscript = pp.Group(pp.ZeroOrMore(toplevel_elements))
+ldscript.ignore(pp.cppStyleComment)
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser()
+ parser.add_argument('linker_script', type=argparse.FileType('r'))
+ args = parser.parse_args()
+
+ #print(mem_expr.parseString('FLASH (rx) : ORIGIN = 0x0800000, LENGTH = 512K', parseAll=True))
+ # print(ldscript.parseString('''
+ # /* Entry Point */
+ # ENTRY(Reset_Handler)
+ #
+ # /* Highest address of the user mode stack */
+ # _estack = 0x20020000; /* end of RAM */
+ # /* Generate a link error if heap and stack don't fit into RAM */
+ # _Min_Heap_Size = 0x200;; /* required amount of heap */
+ # _Min_Stack_Size = 0x400;; /* required amount of stack */
+ # ''', parseAll=True))
+
+ print(ldscript.parseFile(args.linker_script, parseAll=True))
+ #print(funccall.parseString('KEEP(*(.isr_vector))'))
+ #print(section_contents.parseString('''
+ # . = ALIGN(4);
+ # KEEP(*(.isr_vector)) /* Startup code */
+ # . = ALIGN(4);
+ # ''', parseAll=True))
+
+ #print(section_def.parseString('''
+ # .text :
+ # {
+ # . = ALIGN(4);
+ # *(.text) /* .text sections (code) */
+ # *(.text*) /* .text* sections (code) */
+ # *(.glue_7) /* glue arm to thumb code */
+ # *(.glue_7t) /* glue thumb to arm code */
+ # *(.eh_frame)
+ #
+ # KEEP (*(.init))
+ # KEEP (*(.fini))
+ #
+ # . = ALIGN(4);
+ # _etext = .; /* define a global symbols at end of code */
+ # } >FLASH
+ # ''', parseAll=True))
+
+ #print(section_def.parseString('.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH', parseAll=True))
+
+ #print(assignment.parseString('__preinit_array_start = .', parseAll=True))
+ #print(assignment.parseString('a = 23', parseAll=True))
+ #print(funccall.parseString('foo (a=23)', parseAll=True))
+ #print(funccall.parseString('PROVIDE_HIDDEN (__preinit_array_start = .);', parseAll=True))
+ #print(section_def.parseString('''
+ # .preinit_array :
+ # {
+ # PROVIDE_HIDDEN (__preinit_array_start = .);
+ # KEEP (*(.preinit_array*))
+ # PROVIDE_HIDDEN (__preinit_array_end = .);
+ # } >FLASH''', parseAll=True))
+ #print(match_expr.parseString('*(SORT(.init_array.*))', parseAll=True))
+ #print(funccall.parseString('KEEP (*(SORT(.init_array.*)))', parseAll=True))
+ #print(section_def.parseString('''
+ # .init_array :
+ # {
+ # PROVIDE_HIDDEN (__init_array_start = .);
+ # KEEP (*(SORT(.init_array.*)))
+ # KEEP (*(.init_array*))
+ # PROVIDE_HIDDEN (__init_array_end = .);
+ # } >FLASH
+ # ''', parseAll=True))
+
+ #print(match_expr.parseString('*(.ARM.extab* .gnu.linkonce.armextab.*)', parseAll=True))
+ #print(formula.parseString('. + _Min_Heap_Size', parseAll=True))
+ #print(assignment.parseString('. = . + _Min_Heap_Size;', parseAll=True))
+ #print(sections_toplevel.parseString('''
+ # SECTIONS
+ # {
+ # .ARMattributes : { }
+ # }
+ # ''', parseAll=True))
+ #sys.exit(0)
+
diff --git a/tools/linkmem.py b/tools/linkmem.py
new file mode 100644
index 0000000..934a571
--- /dev/null
+++ b/tools/linkmem.py
@@ -0,0 +1,276 @@
+
+import tempfile
+import os
+from os import path
+import sys
+import re
+import subprocess
+from contextlib import contextmanager
+from collections import defaultdict
+import colorsys
+
+import cxxfilt
+from elftools.elf.elffile import ELFFile
+from elftools.elf.enums import ENUM_ST_SHNDX
+from elftools.elf.descriptions import describe_symbol_type, describe_sh_type
+import libarchive
+import matplotlib.cm
+
+@contextmanager
+def chdir(newdir):
+ old_cwd = os.getcwd()
+ try:
+ os.chdir(newdir)
+ yield
+ finally:
+ os.chdir(old_cwd)
+
+def keep_last(it, first=None):
+ last = first
+ for elem in it:
+ yield last, elem
+ last = elem
+
+def delim(start, end, it, first_only=True):
+ found = False
+ for elem in it:
+ if end(elem):
+ if first_only:
+ return
+ found = False
+ elif start(elem):
+ found = True
+ elif found:
+ yield elem
+
+def delim_prefix(start, end, it):
+ yield from delim(lambda l: l.startswith(start), lambda l: end is not None and l.startswith(end), it)
+
+def trace_source_files(linker, cmdline, trace_sections=[], total_sections=['.text', '.data', '.rodata']):
+ with tempfile.TemporaryDirectory() as tempdir:
+ out_path = path.join(tempdir, 'output.elf')
+ output = subprocess.check_output([linker, '-o', out_path, f'-Wl,--print-map', *cmdline])
+ lines = [ line.strip() for line in output.decode().splitlines() ]
+ # FIXME also find isr vector table references
+
+ defs = {}
+ objs = defaultdict(lambda: 0)
+ aliases = {}
+ sec_name = None
+ last_loc = None
+ last_sym = None
+ line_cont = None
+ for last_line, line in keep_last(delim_prefix('Linker script and memory map', 'OUTPUT', lines), first=''):
+ if not line or line.startswith('LOAD '):
+ sec_name = None
+ continue
+
+ # first part of continuation line
+ if m := re.match('^(\.[0-9a-zA-Z-_.]+)$', line):
+ line_cont = line
+ sec_name = None
+ continue
+
+ if line_cont:
+ line = line_cont + ' ' + line
+ line_cont = None
+
+ # -ffunction-sections/-fdata-sections section
+ if m := re.match('^(\.[0-9a-zA-Z-_.]+)\.([0-9a-zA-Z-_.]+)\s+(0x[0-9a-f]+)\s+(0x[0-9a-f]+)\s+(\S+)$', line):
+ sec, sym, loc, size, obj = m.groups()
+ *_, sym = sym.rpartition('.')
+ sym = cxxfilt.demangle(sym)
+ size = int(size, 16)
+ obj = path.abspath(obj)
+
+ if sec not in total_sections:
+ size = 0
+
+ objs[obj] += size
+ defs[sym] = (sec, size, obj)
+
+ sec_name, last_loc, last_sym = sec, loc, sym
+ continue
+
+ # regular (no -ffunction-sections/-fdata-sections) section
+ if m := re.match('^(\.[0-9a-zA-Z-_]+)\s+(0x[0-9a-f]+)\s+(0x[0-9a-f]+)\s+(\S+)$', line):
+ sec, _loc, size, obj = m.groups()
+ size = int(size, 16)
+ obj = path.abspath(obj)
+
+ if sec in total_sections:
+ objs[obj] += size
+
+ sec_name = sec
+ last_loc, last_sym = None, None
+ continue
+
+ # symbol def
+ if m := re.match('^(0x[0-9a-f]+)\s+(\S+)$', line):
+ loc, sym = m.groups()
+ sym = cxxfilt.demangle(sym)
+ loc = int(loc, 16)
+ if sym in defs:
+ continue
+
+ if loc == last_loc:
+ assert last_sym is not None
+ aliases[sym] = last_sym
+ else:
+ assert sec_name
+ defs[sym] = (sec_name, None, obj)
+ last_loc, last_sym = loc, sym
+
+ continue
+
+ refs = defaultdict(lambda: set())
+ for sym, (sec, size, obj) in defs.items():
+ fn, _, member = re.match('^([^()]+)(\((.+)\))?$', obj).groups()
+ fn = path.abspath(fn)
+
+ if member:
+ subprocess.check_call(['ar', 'x', '--output', tempdir, fn, member])
+ fn = path.join(tempdir, member)
+
+ with open(fn, 'rb') as f:
+ elf = ELFFile(f)
+
+ symtab = elf.get_section_by_name('.symtab')
+
+ symtab_demangled = { cxxfilt.demangle(nsym.name).replace(' ', ''): i
+ for i, nsym in enumerate(symtab.iter_symbols()) }
+
+ s = set()
+ sec_map = { sec.name: i for i, sec in enumerate(elf.iter_sections()) }
+ matches = [ i for name, i in sec_map.items() if re.match(f'\.rel\..*\.{sym}', name) ]
+ if matches:
+ sec = elf.get_section(matches[0])
+ for reloc in sec.iter_relocations():
+ refsym = symtab.get_symbol(reloc['r_info_sym'])
+ name = refsym.name if refsym.name else elf.get_section(refsym['st_shndx']).name.split('.')[-1]
+ s.add(name)
+ refs[sym] = s
+
+ for tsec in trace_sections:
+ matches = [ i for name, i in sec_map.items() if name == f'.rel{tsec}' ]
+ s = set()
+ if matches:
+ sec = elf.get_section(matches[0])
+ for reloc in sec.iter_relocations():
+ refsym = symtab.get_symbol(reloc['r_info_sym'])
+ s.add(refsym.name)
+ refs[tsec.replace('.', '_')] |= s
+
+ return objs, aliases, defs, refs
+
+@contextmanager
+def wrap(leader='', print=print, left='{', right='}'):
+ print(leader, left)
+ yield lambda *args, **kwargs: print(' ', *args, **kwargs)
+ print(right)
+
+def mangle(name):
+ return re.sub('[^a-zA-Z0-9_]', '_', name)
+
+hexcolor = lambda r, g, b, *_a: f'#{int(r*255):02x}{int(g*255):02x}{int(b*255):02x}'
+def vhex(val):
+ r,g,b,_a = matplotlib.cm.viridis(1.0-val)
+ fc = hexcolor(r, g, b)
+ h,s,v = colorsys.rgb_to_hsv(r,g,b)
+ cc = '#000000' if v > 0.8 else '#ffffff'
+ return fc, cc
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser()
+ parser.add_argument('--trace-sections', type=str, action='append', default=[])
+ parser.add_argument('--trim-stubs', type=str, action='append', default=[])
+ parser.add_argument('--highlight-subdirs', type=str, default=None)
+ parser.add_argument('linker_binary')
+ parser.add_argument('linker_args', nargs=argparse.REMAINDER)
+ args = parser.parse_args()
+
+ trace_sections = args.trace_sections
+ trace_sections_mangled = { sec.replace('.', '_') for sec in trace_sections }
+ objs, aliases, syms, refs = trace_source_files(args.linker_binary, args.linker_args, trace_sections)
+
+ clusters = defaultdict(lambda: [])
+ for sym, (sec, size, obj) in syms.items():
+ clusters[obj].append((sym, sec, size))
+
+ max_ssize = max(size or 0 for _sec, size, _obj in syms.values())
+ max_osize = max(objs.values())
+
+ subdir_prefix = path.abspath(args.highlight_subdirs) + '/' if args.highlight_subdirs else '### NO HIGHLIGHT ###'
+ first_comp = lambda le_path: path.dirname(le_path).partition(os.sep)[0]
+ subdir_colors = sorted({ first_comp(obj[len(subdir_prefix):]) for obj in objs if obj.startswith(subdir_prefix) })
+ subdir_colors = { path: hexcolor(*matplotlib.cm.Pastel1(i/len(subdir_colors))) for i, path in enumerate(subdir_colors) }
+
+ subdir_sizes = defaultdict(lambda: 0)
+ for obj, size in objs.items():
+ if not isinstance(size, int):
+ continue
+ if obj.startswith(subdir_prefix):
+ subdir_sizes[first_comp(obj[len(subdir_prefix):])] += size
+ else:
+ subdir_sizes['<others>'] += size
+
+ print('Subdir sizes:', file=sys.stderr)
+ for subdir, size in sorted(subdir_sizes.items(), key=lambda x: x[1]):
+ print(f'{subdir:>20}: {size:>6,d} B', file=sys.stderr)
+
+ def lookup_highlight(path):
+ if args.highlight_subdirs:
+ if obj.startswith(subdir_prefix):
+ highlight_head = first_comp(path[len(subdir_prefix):])
+ return subdir_colors[highlight_head], highlight_head
+ else:
+ return '#e0e0e0', None
+ else:
+ return '#ddf7f4', None
+
+ with wrap('digraph G', print) as lvl1print:
+ print('size="23.4,16.5!";')
+ print('graph [fontsize=40];')
+ print('node [fontsize=40];')
+ #print('ratio="fill";')
+
+ print('rankdir=LR;')
+ print('ranksep=5;')
+ print('nodesep=0.2;')
+ print()
+
+ for i, (obj, obj_syms) in enumerate(clusters.items()):
+ with wrap(f'subgraph cluster_{i}', lvl1print) as lvl2print:
+ print('style = "filled";')
+ highlight_color, highlight_head = lookup_highlight(obj)
+ print(f'bgcolor = "{highlight_color}";')
+ print('pencolor = none;')
+ fc, cc = vhex(objs[obj]/max_osize)
+ highlight_subdir_part = f'<font face="carlito" color="{cc}" point-size="40">{highlight_head} / </font>' if highlight_head else ''
+ lvl2print(f'label = <<table border="0"><tr><td border="0" cellpadding="5" bgcolor="{fc}">'
+ f'{highlight_subdir_part}'
+ f'<font face="carlito" color="{cc}"><b>{path.basename(obj)} ({objs[obj]}B)</b></font>'
+ f'</td></tr></table>>;')
+ lvl2print()
+ for sym, sec, size in obj_syms:
+ has_size = isinstance(size, int) and size > 0
+ size_s = f' ({size}B)' if has_size else ''
+ fc, cc = vhex(size/max_ssize) if has_size else ('#ffffff', '#000000')
+ shape = 'box' if sec == '.text' else 'oval'
+ lvl2print(f'{mangle(sym)}[label = "{sym}{size_s}", style="rounded,filled", shape="{shape}", fillcolor="{fc}", fontname="carlito", fontcolor="{cc}" color=none];')
+ lvl1print()
+
+ edges = set()
+ for start, ends in refs.items():
+ for end in ends:
+ end = aliases.get(end, end)
+ if (start in syms or start in trace_sections_mangled) and end in syms:
+ edges.add((start, end))
+
+ for start, end in edges:
+ lvl1print(f'{mangle(start)} -> {mangle(end)} [style="bold", color="#333333"];')
+
+ for sec in trace_sections:
+ lvl1print(f'{sec.replace(".", "_")} [label = "section {sec}", shape="box", style="filled,bold"];')
+
diff --git a/tools/linksize.py b/tools/linksize.py
new file mode 100644
index 0000000..c41a951
--- /dev/null
+++ b/tools/linksize.py
@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+
+def parse_linker_script(data):
+ pass
+
+def link(groups):
+ defined_symbols = {}
+ undefined_symbols = set()
+ for group, files in groups:
+ while True:
+ found_something = False
+
+ for fn in files:
+ symbols = load_symbols(fn)
+ for symbol in symbols:
+ if symbol in defined_symbols:
+
+ if not group or not found_something:
+ break
+
+
+if __name__ == '__main__':
+
+ import argparse
+ parser = argparse.ArgumentParser()
+ parser.add_argument('-T', '--script', type=str, help='Linker script to use')
+ parser.add_argument('-o', '--output', type=str, help='Output file to produce')
+ args, rest = parser.parse_known_intermixed_args()
+ print(rest)
+
+ addprefix = lambda *xs: [ prefix + opt for opt in xs for prefix in ('', '-Wl,') ]
+ START_GROUP = addprefix('-(', '--start-group')
+ END_GROUP = addprefix('-)', '--end-group')
+ GROUP_OPTS = [*START_GROUP, *END_GROUP]
+ input_files = [ arg for arg in rest if not arg.startswith('-') or arg in GROUP_OPTS ]
+
+ def input_file_iter(input_files):
+ group = False
+ files = []
+ for arg in input_files:
+ if arg in START_GROUP:
+ assert not group
+
+ if files:
+ yield False, files # nested -Wl,--start-group
+ group, files = True, []
+
+ elif arg in END_GROUP:
+ assert group # missing -Wl,--start-group
+ if files:
+ yield True, files
+ group, files = False, []
+
+ else:
+ files.append(arg)
+
+ assert not group # missing -Wl,--end-group
+ if files:
+ yield False, files
+
+
+
diff --git a/tools/linktracer.py b/tools/linktracer.py
new file mode 100644
index 0000000..0c53a60
--- /dev/null
+++ b/tools/linktracer.py
@@ -0,0 +1,118 @@
+#!/usr/bin/env python3
+
+import re
+import subprocess
+import tempfile
+import pprint
+
+ARCHIVE_RE = r'([^(]*)(\([^)]*\))?'
+
+def trace_source_files(linker, cmdline):
+ with tempfile.NamedTemporaryFile() as mapfile:
+ output = subprocess.check_output([linker, f'-Wl,--Map={mapfile.name}', *cmdline])
+
+ # intentionally use generator here
+ idx = 0
+ lines = [ line.rstrip() for line in mapfile.read().decode().splitlines() if line.strip() ]
+
+ for idx, line in enumerate(lines[idx:], start=idx):
+ #print('Dropping', line)
+ if line == 'Linker script and memory map':
+ break
+
+ idx += 1
+ objects = []
+ symbols = {}
+ sections = {}
+ current_object = None
+ last_offset = None
+ last_symbol = None
+ cont_sec = None
+ cont_ind = None
+ current_section = None
+ for idx, line in enumerate(lines[idx:], start=idx):
+ print(f'Processing >{line}')
+ if line.startswith('LOAD'):
+ _load, obj = line.split()
+ objects.append(obj)
+ continue
+
+ if line.startswith('OUTPUT'):
+ break
+
+ m = re.match(r'^( ?)([^ ]+)? +(0x[0-9a-z]+) +(0x[0-9a-z]+)?(.*)?$', line)
+ if m is None:
+ m = re.match(r'^( ?)([^ ]+)?$', line)
+ if m:
+ cont_ind, cont_sec = m.groups()
+ else:
+ cont_ind, cont_sec = None, None
+ last_offset, last_symbol = None, None
+ continue
+ indent, sec, offx, size, sym_or_src = m.groups()
+ if sec is None:
+ sec = cont_sec
+ ind = cont_ind
+ cont_sec = None
+ cont_ind = None
+ print(f'vals: indent={indent} sec={sec} offx={offx} size={size} sym_or_src={sym_or_src}')
+ if not re.match('^[a-zA-Z_0-9<>():*]+$', sym_or_src):
+ continue
+
+ if indent == '':
+ print(f'Section: {sec} 0x{size:x}')
+ current_section = sec
+ sections[sec] = size
+ last_offset = None
+ last_symbol = None
+ continue
+
+ if offx is not None:
+ offx = int(offx, 16)
+ if size is not None:
+ size = int(size, 16)
+
+ if size is not None and sym_or_src is not None:
+ # archive/object line
+ archive, _member = re.match(ARCHIVE_RE, sym_or_src).groups()
+ current_object = archive
+ last_offset = offx
+ else:
+ if sym_or_src is not None:
+ assert size is None
+ if last_offset is not None:
+ last_size = offx - last_offset
+ symbols[last_symbol] = (last_size, current_section)
+ print(f'Symbol: {last_symbol} 0x{last_size:x} @{current_section}')
+ last_offset = offx
+ last_symbol = sym_or_src
+
+ idx += 1
+
+ for idx, line in enumerate(lines[idx:], start=idx):
+ if line == 'Cross Reference Table':
+ break
+
+ idx += 1
+
+ # map which symbol was pulled from which object in the end
+ used_defs = {}
+ for line in lines:
+ *left, right = line.split()
+
+ archive, _member = re.match(ARCHIVE_RE, right).groups()
+ if left:
+ used_defs[''.join(left)] = archive
+
+ #pprint.pprint(symbols)
+
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser()
+ parser.add_argument('linker_binary')
+ parser.add_argument('linker_args', nargs=argparse.REMAINDER)
+ args = parser.parse_args()
+
+ source_files = trace_source_files(args.linker_binary, args.linker_args)
+
diff --git a/tools/mapparse.py b/tools/mapparse.py
new file mode 100644
index 0000000..c1f460a
--- /dev/null
+++ b/tools/mapparse.py
@@ -0,0 +1,129 @@
+
+import re
+from collections import defaultdict, namedtuple
+
+Section = namedtuple('Section', ['name', 'offset', 'objects'])
+ObjectEntry = namedtuple('ObjectEntry', ['filename', 'object', 'offset', 'size'])
+FileEntry = namedtuple('FileEntry', ['section', 'object', 'offset', 'length'])
+
+class Memory:
+ def __init__(self, name, origin, length, attrs=''):
+ self.name, self.origin, self.length, self.attrs = name, origin, length, attrs
+ self.sections = {}
+ self.files = defaultdict(lambda: [])
+ self.totals = defaultdict(lambda: 0)
+
+ def add_toplevel(self, name, offx, length):
+ self.sections[name] = Section(offx, length, [])
+
+ def add_obj(self, name, offx, length, fn, obj):
+ base_section, sep, subsec = name[1:].partition('.')
+ base_section = '.'+base_section
+ if base_section in self.sections:
+ sec = secname, secoffx, secobjs = self.sections[base_section]
+ secobjs.append(ObjectEntry(fn, obj, offx, length))
+ else:
+ sec = None
+ self.files[fn].append(FileEntry(sec, obj, offx, length))
+ self.totals[fn] += length
+
+class MapFile:
+ def __init__(self, s):
+ self._lines = s.splitlines()
+ self.memcfg = {}
+ self.defaultmem = Memory('default', 0, 0xffffffffffffffff)
+ self._parse()
+
+ def __getitem__(self, offx_or_name):
+ ''' Lookup a memory area by name or address '''
+ if offx_or_name in self.memcfg:
+ return self.memcfg[offx_or_name]
+
+ elif isinstance(offx_or_name, int):
+ for mem in self.memcfg.values():
+ if mem.origin <= offx_or_name < mem.origin+mem.length:
+ return mem
+ else:
+ return self.defaultmem
+
+ raise ValueError('Invalid argument type for indexing')
+
+ def _skip(self, regex):
+ matcher = re.compile(regex)
+ for l in self:
+ if matcher.match(l):
+ break
+
+ def __iter__(self):
+ while self._lines:
+ yield self._lines.pop(0)
+
+ def _parse(self):
+ self._skip('^Memory Configuration')
+
+ # Parse memory segmentation info
+ self._skip('^Name')
+ for l in self:
+ if not l:
+ break
+ name, origin, length, *attrs = l.split()
+ if not name.startswith('*'):
+ self.memcfg[name] = Memory(name, int(origin, 16), int(length, 16), attrs[0] if attrs else '')
+
+ # Parse section information
+ toplevel_m = re.compile('^(\.[a-zA-Z0-9_.]+)\s+(0x[0-9a-fA-F]+)\s+(0x[0-9a-fA-F]+)')
+ secondlevel_m = re.compile('^ (\.[a-zA-Z0-9_.]+)\s+(0x[0-9a-fA-F]+)\s+(0x[0-9a-fA-F]+)\s+(.*)$')
+ secondlevel_linebreak_m = re.compile('^ (\.[a-zA-Z0-9_.]+)\n')
+ filelike = re.compile('^(/?[^()]*\.[a-zA-Z0-9-_]+)(\(.*\))?')
+ linebreak_section = None
+ for l in self:
+ # Toplevel section
+ match = toplevel_m.match(l)
+ if match:
+ name, offx, length = match.groups()
+ offx, length = int(offx, 16), int(length, 16)
+ self[offx].add_toplevel(name, offx, length)
+
+ match = secondlevel_linebreak_m.match(l)
+ if match:
+ linebreak_section, = match.groups()
+ continue
+
+ if linebreak_section:
+ l = ' {} {}'.format(linebreak_section, l)
+ linebreak_section = None
+
+ # Second-level section
+ match = secondlevel_m.match(l)
+ if match:
+ name, offx, length, misc = match.groups()
+ match = filelike.match(misc)
+ if match:
+ fn, obj = match.groups()
+ obj = obj.strip('()') if obj else None
+ offx, length = int(offx, 16), int(length, 16)
+ self[offx].add_obj(name, offx, length, fn, obj)
+
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser(description='Parser GCC map file')
+ parser.add_argument('mapfile', type=argparse.FileType('r'), help='The GCC .map file to parse')
+ parser.add_argument('-m', '--memory', type=str, help='The memory segments to print, comma-separated')
+ args = parser.parse_args()
+ mf = MapFile(args.mapfile.read())
+ args.mapfile.close()
+
+ mems = args.memory.split(',') if args.memory else mf.memcfg.keys()
+
+ for name in mems:
+ mem = mf.memcfg[name]
+ print('Symbols by file for memory', name)
+ for tot, fn in reversed(sorted( (tot, fn) for fn, tot in mem.totals.items() )):
+ print(' {:>8} {}'.format(tot, fn))
+ for length, offx, sec, obj in reversed(sorted(( (length, offx, sec, obj) for sec, obj, offx, length in
+ mem.files[fn] ), key=lambda e: e[0] )):
+ name = sec.name if sec else None
+ print(' {:>8} {:>#08x} {}'.format(length, offx, obj))
+ #print('{:>16} 0x{:016x} 0x{:016x} ({:>24}) {}'.format(name, origin, length, length, attrs))
+
diff --git a/tools/presig_gen.py b/tools/presig_gen.py
new file mode 100644
index 0000000..c5dafe7
--- /dev/null
+++ b/tools/presig_gen.py
@@ -0,0 +1,141 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import textwrap
+import uuid
+import hmac
+import binascii
+import time
+from datetime import datetime
+
+LINKING_KEY_SIZE = 15
+PRESIG_VERSION = '000.001'
+DOMAINS = ['all', 'country', 'region', 'vendor', 'series']
+
+def format_hex(data, indent=4, wrap=True):
+ indent = ' '*indent
+ par = ', '.join(f'0x{b:02x}' for b in data)
+ par = textwrap.fill(par, width=120,
+ initial_indent=indent, subsequent_indent=indent,
+ replace_whitespace=False, drop_whitespace=False)
+ if wrap:
+ return f'{{\n{par}\n}}'
+ return par
+
+def domain_string(domain, value):
+ return f'smart reset domain string v{PRESIG_VERSION}: domain:{domain}={value}'
+
+def keygen_cmd(args):
+ if os.path.exists(args.keyfile) and not args.force:
+ print("Error: keyfile already exists. We won't overwrite it. Instead please remove it manually.",
+ file=sys.stderr)
+ return 1
+
+ root_key = os.urandom(LINKING_KEY_SIZE)
+
+ with open(args.keyfile, 'wb') as f:
+ f.write(binascii.hexlify(root_key))
+ f.write(b'\n')
+ return 0
+
+def gen_at_height(domain, value, height, key):
+ # nanananananana BLOCKCHAIN!
+
+ ds = domain_string(domain, value).encode('utf-8')
+
+ for height in range(height+1):
+ key = hmac.digest(key, ds, 'sha512')[:LINKING_KEY_SIZE]
+
+ return key
+
+def auth_cmd(args):
+ with open(args.keyfile, 'r') as f:
+ root_key = binascii.unhexlify(f.read().strip())
+
+ vals = [ (domain, getattr(args, domain)) for domain in DOMAINS if getattr(args, domain) is not None ]
+ if not vals:
+ vals = [('all', 'all')]
+ for domain, value in vals:
+ auth = gen_at_height(domain, value, args.height, root_key)
+ print(f'{domain}="{value}" @{args.height}: {binascii.hexlify(auth).decode()}')
+
+
+def prekey_cmd(args):
+ with open(args.keyfile, 'r') as f:
+ root_key = binascii.unhexlify(f.read().strip())
+
+ print('#include <stdint.h>')
+ print('#include <assert.h>')
+ print()
+ print('#include "crypto.h"')
+ print()
+
+ bundle_id = uuid.uuid4().bytes
+ print(f'/* bundle id {binascii.hexlify(bundle_id).decode()} */')
+ print(f'uint8_t presig_bundle_id[16] = {format_hex(bundle_id)};')
+ print()
+ print(f'/* generated on {datetime.now()} */')
+ print(f'uint64_t bundle_timestamp = {int(time.time())};')
+ print()
+ print(f'int presig_height = {args.max_height};')
+ print()
+
+ print('const char *presig_domain_strings[_TRIGGER_DOMAIN_COUNT] = {')
+ for domain in DOMAINS:
+ ds = domain_string(domain, getattr(args, domain))
+ assert '"' not in ds
+ print(f' [TRIGGER_DOMAIN_{domain.upper()}] = "{ds}",')
+ print('};')
+ print()
+
+ print('uint8_t presig_keys[_TRIGGER_DOMAIN_COUNT][PRESIG_MSG_LEN] = {')
+ for domain in DOMAINS:
+ key = gen_at_height(domain, getattr(args, domain), args.max_height, root_key)
+ print(f' [TRIGGER_DOMAIN_{domain.upper()}] = {{{format_hex(key, indent=0, wrap=False)}}},')
+ print('};')
+
+ print()
+ print('static inline void __hack_asserts_only(void) {')
+ print(f' static_assert(_TRIGGER_DOMAIN_COUNT == {len(DOMAINS)});')
+ print(f' static_assert(PRESIG_MSG_LEN == {LINKING_KEY_SIZE});')
+ print('}')
+ print()
+
+
+
+TEST_VENDOR = 'Darthenschmidt Cyberei und Verschleierungstechnik GmbH'
+TEST_SERIES = 'Frobnicator v0.23.7'
+TEST_REGION = 'Neuland'
+TEST_COUNTRY = 'Germany'
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser()
+ parser.add_argument('keyfile', help='Key file to use')
+
+ subparsers = parser.add_subparsers(title='subcommands')
+ keygen_parser = subparsers.add_parser('keygen', help='Generate a new key')
+ keygen_parser.add_argument('-f', '--force', action='store_true', help='Force overwriting existing keyfile')
+ keygen_parser.set_defaults(func=keygen_cmd)
+
+ auth_parser = subparsers.add_parser('auth', help='Generate one-time authentication string')
+ auth_parser.add_argument('height', type=int, help='Authentication string height, counting from 0 (root key)')
+ auth_parser.set_defaults(func=auth_cmd)
+ auth_parser.add_argument('-a', '--all', action='store_const', const='all', help='Vendor name for vendor domain')
+ auth_parser.add_argument('-v', '--vendor', type=str, nargs='?', const=TEST_VENDOR, help='Vendor name for vendor domain')
+ auth_parser.add_argument('-s', '--series', type=str, nargs='?', const=TEST_SERIES, help='Series identifier for series domain')
+ auth_parser.add_argument('-r', '--region', type=str, nargs='?', const=TEST_REGION, help='Region name for region domain')
+ auth_parser.add_argument('-c', '--country', type=str, nargs='?', const=TEST_COUNTRY, help='Country name for country domain')
+
+ prekey_parser = subparsers.add_parser('prekey', help='Generate prekey data .C source code file')
+ prekey_parser.add_argument('-m', '--max-height', type=int, default=8, help='Height of generated prekey')
+ prekey_parser.add_argument('-v', '--vendor', type=str, default=TEST_VENDOR, help='Vendor name for vendor domain')
+ prekey_parser.add_argument('-s', '--series', type=str, default=TEST_SERIES, help='Series identifier for series domain')
+ prekey_parser.add_argument('-r', '--region', type=str, default=TEST_REGION, help='Region name for region domain')
+ prekey_parser.add_argument('-c', '--country', type=str, default=TEST_COUNTRY, help='Country name for country domain')
+ prekey_parser.set_defaults(func=prekey_cmd, all='all')
+
+ args = parser.parse_args()
+ sys.exit(args.func(args))
+
diff --git a/tools/reed_solomon.py b/tools/reed_solomon.py
new file mode 100644
index 0000000..c4ca6e4
--- /dev/null
+++ b/tools/reed_solomon.py
@@ -0,0 +1,91 @@
+import os, sys
+import ctypes as C
+import argparse
+import binascii
+import numpy as np
+import timeit
+import statistics
+
+lib = C.CDLL('rslib.so')
+
+lib.rslib_encode.argtypes = [C.c_int, C.c_size_t, C.POINTER(C.c_char), C.POINTER(C.c_char)]
+lib.rslib_decode.argtypes = [C.c_int, C.c_size_t, C.POINTER(C.c_char)]
+lib.rslib_gexp.argtypes = [C.c_int, C.c_int]
+lib.rslib_gexp.restype = C.c_int
+lib.rslib_decode.restype = C.c_int
+lib.rslib_npar.restype = C.c_size_t
+
+def npar():
+ return lib.rslib_npar()
+
+def encode(data: bytes, nbits=8):
+ out = C.create_string_buffer(len(data) + lib.rslib_npar())
+ lib.rslib_encode(nbits, len(data), data, out)
+ return out.raw
+
+def decode(data: bytes, nbits=8):
+ inout = C.create_string_buffer(data)
+ lib.rslib_decode(nbits, len(data), inout)
+ return inout.raw[:-lib.rslib_npar() - 1]
+
+def cmdline_func_test(args, print=lambda *args, **kwargs: None, benchmark=False):
+ st = np.random.RandomState(seed=args.seed)
+
+ lfsr = [lib.rslib_gexp(i, args.bits) for i in range(2**args.bits - 1)]
+ print('LFSR', len(set(lfsr)), lfsr)
+ assert all(0 < x < 2**args.bits for x in lfsr)
+ assert len(set(lfsr)) == 2**args.bits - 1
+
+ print('Seed', args.seed)
+ for i in range(args.repeat):
+ print(f'Run {i}')
+ test_data = bytes(st.randint(2**args.bits, size=args.message_length, dtype=np.uint8))
+ print(' Raw:', binascii.hexlify(test_data).decode())
+ encoded = encode(test_data, nbits=args.bits)
+ print(' Encoded:', binascii.hexlify(encoded).decode())
+
+ indices = st.permutation(len(encoded))
+ encoded = list(encoded)
+ for pos in indices[:args.errors]:
+ encoded[pos] = st.randint(2**args.bits)
+ encoded = bytes(encoded)
+ print(' Modified:', ''.join(f'\033[91m{b:02x}\033[0m' if pos in indices[:args.errors] else f'{b:02x}' for pos, b in enumerate(encoded)))
+
+ if benchmark:
+ rpt = 10000
+ delta = timeit.timeit('decode(encoded, nbits=args.bits)',
+ globals={'args': args, 'decode': decode, 'encoded': encoded},
+ number=rpt)/rpt
+ print(f'Decoding runtime: {delta*1e6:.3f}μs')
+ decoded = decode(encoded, nbits=args.bits)
+ print(' Decoded:', binascii.hexlify(decoded).decode())
+ print(' Delta:', binascii.hexlify(
+ bytes(x^y for x, y in zip(test_data, decoded))
+ ).decode().replace('0', '.'))
+ assert test_data == decoded
+
+def cmdline_func_encode(args, **kwargs):
+ data = np.frombuffer(binascii.unhexlify(args.hex_str), dtype=np.uint8)
+ # Map 8 bit input to 6 bit symbol string
+ data = np.packbits(np.pad(np.unpackbits(data).reshape((-1, 6)), ((0,0),(2, 0))).flatten())
+ encoded = encode(data.tobytes(), nbits=args.bits)
+ print('symbol array:', ', '.join(f'0x{x:02x}' for x in encoded))
+ print('hex string:', binascii.hexlify(encoded).decode())
+
+if __name__ == '__main__':
+ parser = argparse.ArgumentParser()
+ cmd_parser = parser.add_subparsers(required=True)
+ test_parser = cmd_parser.add_parser('test', help='Test reed-solomon implementation')
+ test_parser.add_argument('-m', '--message-length', type=int, default=6, help='Test message (plaintext) length in bytes')
+ test_parser.add_argument('-e', '--errors', type=int, default=2, help='Number of byte errors to insert into simulation')
+ test_parser.add_argument('-r', '--repeat', type=int, default=1000, help='Repeat experiment -r times')
+ test_parser.add_argument('-b', '--bits', type=int, default=8, help='Symbol bit size')
+ test_parser.add_argument('-s', '--seed', type=int, default=0, help='Random seed')
+ test_parser.set_defaults(func=cmdline_func_test)
+ enc_parser = cmd_parser.add_parser('encode', help='RS-Encode given hex string')
+ enc_parser.set_defaults(func=cmdline_func_encode)
+ enc_parser.add_argument('-b', '--bits', type=int, default=8, help='Symbol bit size')
+ enc_parser.add_argument('hex_str', type=str, help='Input data as hex string')
+ args = parser.parse_args()
+ args.func(args)
+