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OPENCM3_DIR ?= libopencm3
CMSIS_DIR ?= cmsis
MSPDEBUG_DIR ?= mspdebug
LIBSODIUM_DIR ?= libsodium
TINYAES_DIR ?= tinyaes
MUSL_DIR ?= musl
C_SOURCES := src/main.c src/mspdebug_wrapper.c src/spi_flash.c src/freq_meas.c
C_SOURCES += $(MSPDEBUG_DIR)/drivers/jtaglib.c
CMSIS_SOURCES += $(CMSIS_DIR)/CMSIS/DSP/Source/TransformFunctions/arm_rfft_fast_init_f32.c
CMSIS_SOURCES += $(CMSIS_DIR)/CMSIS/DSP/Source/TransformFunctions/arm_rfft_fast_f32.c
CMSIS_SOURCES += $(CMSIS_DIR)/CMSIS/DSP/Source/TransformFunctions/arm_cfft_init_f32.c
CMSIS_SOURCES += $(CMSIS_DIR)/CMSIS/DSP/Source/TransformFunctions/arm_cfft_f32.c
CMSIS_SOURCES += $(CMSIS_DIR)/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix8_f32.c
CMSIS_SOURCES += $(CMSIS_DIR)/CMSIS/DSP/Source/CommonTables/arm_const_structs.c
CMSIS_SOURCES += $(CMSIS_DIR)/CMSIS/DSP/Source/CommonTables/arm_common_tables.c
CMSIS_SOURCES += $(CMSIS_DIR)/CMSIS/DSP/Source/TransformFunctions/arm_bitreversal.c
CMSIS_SOURCES += $(CMSIS_DIR)/CMSIS/DSP/Source/TransformFunctions/arm_bitreversal2.c
MUSL_SOURCES += $(MUSL_DIR)/src/math/tanhf.c $(MUSL_DIR)/src/math/atanhf.c
MUSL_SOURCES += $(MUSL_DIR)/src/math/expm1f.c $(MUSL_DIR)/src/math/log1pf.c
MUSL_SOURCES += $(MUSL_DIR)/src/math/expf.c $(MUSL_DIR)/src/math/exp2f_data.c
MUSL_SOURCES += $(MUSL_DIR)/src/math/powf.c
MUSL_SOURCES += $(MUSL_DIR)/src/math/__math_oflowf.c
MUSL_SOURCES += $(MUSL_DIR)/src/math/__math_uflowf.c
MUSL_SOURCES += $(MUSL_DIR)/src/math/__math_xflowf.c
MUSL_SOURCES += $(MUSL_DIR)/src/math/__math_invalidf.c
MUSL_SOURCES += $(MUSL_DIR)/src/math/powf_data.c
C_SOURCES += $(CMSIS_SOURCES) $(MUSL_SOURCES)
CXX_SOURCES += src/ldpc_wrapper.cpp
BUILDDIR ?= build
BINARY := safetyreset.elf
LDSCRIPT := stm32f407.ld
OPENCM3_LIB := opencm3_stm32f4
PREFIX ?= arm-none-eabi-
GOLD_CODE_NBITS ?= 5
FMEAS_ADC_SAMPLING_RATE ?= 1000
FMEAS_ADC_MAX ?= 4096
FMEAS_FFT_LEN ?= 256
FMEAS_FFT_WINDOW ?= gaussian
FMEAS_FFT_WINDOW_SIGMA ?= 8.0
CC ?= $(PREFIX)gcc
CXX ?= $(PREFIX)g++
LD ?= $(PREFIX)gcc
AR ?= $(PREFIX)ar
AS ?= $(PREFIX)as
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
OPENCM3_DIR_ABS := $(abspath $(OPENCM3_DIR))
CMSIS_DIR_ABS := $(abspath $(CMSIS_DIR))
MSPDEBUG_DIR_ABS := $(abspath $(MSPDEBUG_DIR))
LIBSODIUM_DIR_ABS := $(abspath $(LIBSODIUM_DIR))
TINYAES_DIR_ABS := $(abspath $(TINYAES_DIR))
MUSL_DIR_ABS := $(abspath $(MUSL_DIR))
COMMON_CFLAGS += -I$(OPENCM3_DIR_ABS)/include -Imspdebug/util -Imspdebug/drivers
COMMON_CFLAGS += -I$(CMSIS_DIR_ABS)/CMSIS/DSP/Include -I$(CMSIS_DIR_ABS)/CMSIS/Core/Include
COMMON_CFLAGS += -I$(abspath musl_include_shims) -Ilevmarq
COMMON_CFLAGS += -Os -std=gnu11 -g -DSTM32F4
CFLAGS += -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16
#SIM_CFLAGS += -mthumb -mcpu=cortex-m4 -mfloat-abi=soft
# Note: libopencm3 requires some standard libc definitions from stdint.h and stdbool.h, so we don't pass -nostdinc here.
CFLAGS += -nostdlib -ffreestanding
CFLAGS += -fno-common -ffunction-sections -fdata-sections
COMMON_CFLAGS += -DGOLD_CODE_NBITS=$(GOLD_CODE_NBITS) -DFMEAS_FFT_LEN=$(FMEAS_FFT_LEN) -DFMEAS_ADC_MAX=$(FMEAS_ADC_MAX)
COMMON_CFLAGS += -DFMEAS_ADC_SAMPLING_RATE=$(FMEAS_ADC_SAMPLING_RATE)
COMMON_CFLAGS += -DFMEAS_FFT_WINDOW_SIGMA=$(FMEAS_FFT_WINDOW_SIGMA)
# for musl
CFLAGS += -Dhidden=
SIM_CFLAGS += -Isrc
INT_CFLAGS += -Wall -Wextra -Wpedantic -Wshadow -Wimplicit-function-declaration -Wundef
INT_CFLAGS += -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes
CXXFLAGS += -Os -g
CXXFLAGS += -nostdlib -ffreestanding
CXXFLAGS += -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16
CXXFLAGS += -fno-common -ffunction-sections -fdata-sections
CXXFLAGS += -Wall -Wextra -Wshadow -Wundef -Wredundant-decls
CXXFLAGS += -I.
COMMON_LDFLAGS += -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -g
LDFLAGS += --static -nostartfiles
LDFLAGS += -Wl,--cre
#LDFLAGS += -Wl,--gc-sections
LDFLAGS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
LDFLAGS += -L$(OPENCM3_DIR_ABS)/lib -l$(OPENCM3_LIB) $(shell $(CC) -print-libgcc-file-name)
all: $(BUILDDIR)/$(BINARY)
tests: $(BUILDDIR)/tools/freq_meas_test.elf
OBJS := $(addprefix $(BUILDDIR)/,$(C_SOURCES:.c=.o) $(CXX_SOURCES:.cpp=.o))
ALL_OBJS := $(OBJS)
ALL_OBJS += $(OPENCM3_DIR)/lib/lib$(OPENCM3_LIB).a
ALL_OBJS += $(BUILDDIR)/libsodium/src/libsodium/.libs/libsodium.a
ALL_OBJS += $(BUILDDIR)/tinyaes/aes.o
ALL_OBJS += $(BUILDDIR)/levmarq/levmarq.o
ALL_OBJS += $(BUILDDIR)/generated/gold_code_$(GOLD_CODE_NBITS).o
ALL_OBJS += $(BUILDDIR)/generated/fmeas_fft_window.o
$(BUILDDIR)/$(BINARY): $(ALL_OBJS)
$(LD) -T$(LDSCRIPT) $(COMMON_LDFLAGS) $(LDFLAGS) -o $@ -Wl,-Map=$(BUILDDIR)/src/$*.map $^
$(BUILDDIR)/tools/freq_meas_test.elf: tools/freq_meas_test.c src/freq_meas.c levmarq/levmarq.c $(BUILDDIR)/generated/fmeas_fft_window.c $(CMSIS_SOURCES)
mkdir -p $(@D)
$(HOST_CC) $(COMMON_CFLAGS) $(SIM_CFLAGS) -o $@ $^
$(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 $<
$(OPENCM3_DIR)/lib/lib$(OPENCM3_LIB).a:
$(MAKE) -C $(OPENCM3_DIR) -j $(shell nproc)
$(BUILDDIR)/libsodium/src/libsodium/.libs/libsodium.a:
mkdir -p $(BUILDDIR)/libsodium
cd $(BUILDDIR)/libsodium && CFLAGS="$(COMMON_CFLAGS) $(CFLAGS) -DDEV_MODE=1" $(LIBSODIUM_DIR_ABS)/configure --host=arm-none-eabi && $(MAKE) -j $(shell nproc)
$(BUILDDIR)/tinyaes/aes.o:
mkdir -p $(@D)
make -C $(@D) -f $(TINYAES_DIR_ABS)/Makefile VPATH=$(TINYAES_DIR_ABS) CFLAGS="$(COMMON_CFLAGS) $(CFLAGS) -c" CC=$(CC) LD=$(LD) AR=$(AR) aes.o
$(BUILDDIR)/generated/gold_code_%.c:
mkdir -p $(@D)
$(PYTHON3) tools/gold_code_header_gen.py $* > $@
$(BUILDDIR)/generated/fmeas_fft_window.c:
mkdir -p $(@D)
$(PYTHON3) tools/fft_window_header_gen.py -v fmeas_fft_window_table $(FMEAS_FFT_WINDOW) $(FMEAS_FFT_LEN) $(FMEAS_FFT_WINDOW_SIGMA) > $@
$(BUILDDIR)/musl/lib/libc.a:
mkdir -p $(BUILDDIR)/musl
cd $(BUILDDIR)/musl && CFLAGS="$(SIM_CFLAGS) $(COMMON_CFLAGS)" CC=$(CC) LD=$(LD) AR=$(AR) $(MUSL_DIR_ABS)/configure && $(MAKE) TARGET=arm-linux-musleabihf GCC_CONFIG="-mcpu=cortex-m4 -mfloat-abi=soft" -j $(shell nproc)
build/ldpc_decoder_test.so: src/ldpc_decoder.c
gcc -fPIC -shared -Wall -Wextra -Wpedantic -std=gnu11 -O0 -g -o $@ $^
clean:
-rm -r $(BUILDDIR)/src
-rm -r $(BUILDDIR)/generated
-rm $(BUILDDIR)/$(BINARY)
mrproper: clean
-rm -r build
-$(MAKE) -C $(OPENCM3_DIR) clean
.PHONY: clean mrproper
-include $(OBJS:.o=.d)
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