stub adc on/off test code.

Needs a pot on PA0, should get the temperature input working as well.

1 files changed, 169 insertions, 0 deletions

diff --git a/rules.mk b/rules.mk
new file mode 100644
index 0000000..e10dd79
--- /dev/null
+++ b/rules.mk
@@ -0,0 +1,169 @@
+##
+## This file is part of the libopencm3 project.
+##
+## This library is free software: you can redistribute it and/or modify
+## it under the terms of the GNU Lesser General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU Lesser General Public License for more details.
+##
+## You should have received a copy of the GNU Lesser General Public License
+## along with this library.  If not, see <http://www.gnu.org/licenses/>.
+##
+
+# This version of rules.mk expects the following to be defined before
+# inclusion..
+### REQUIRED ###
+# OPENCM3_DIR - duh
+# OPENCM3_LIB - the basename, eg: opencm3_stm32f4
+# OPENCM3_DEFS - the target define eg: -DSTM32F4
+# ARCH_FLAGS - eg, -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16
+#    (ie, the full set of cpu arch flags, _none_ are defined in this file)
+# PROJECT - will be the basename of the output elf, eg usb-gadget0-stm32f4disco
+# CFILES - basenames only, eg main.c blah.c
+# LDSCRIPT - full path, eg ../../examples/stm32/f4/stm32f4-discovery/stm32f4-discovery.ld
+#
+### OPTIONAL ###
+# INCLUDES - fully formed -I paths, if you want extra, eg -I../shared
+# BUILD_DIR - defaults to bin, should set this if you are building multiarch
+# OPT - full -O flag, defaults to -Os
+# CSTD - defaults -std=c99
+# CXXSTD - no default.
+# OOCD_INTERFACE - eg stlink-v2
+# OOCD_TARGET - eg stm32f4x
+#    both only used if you use the "make flash" target.
+# OOCD_FILE - eg my.openocd.cfg
+#    This overrides interface/target above, and is used as just -f FILE
+### TODO/FIXME/notes ###
+# No support for stylecheck.
+# No support for BMP/texane/random flash methods, no plans either
+# No support for magically finding the library.
+# C++ hasn't been actually tested with this..... sorry bout that. ;)
+# Second expansion/secondary not set, add this if you need them.
+
+BUILD_DIR ?= bin
+OPT ?= -Os
+CSTD ?= -std=c99
+
+# Be silent per default, but 'make V=1' will show all compiler calls.
+# If you're insane, V=99 will print out all sorts of things.
+V?=0
+ifeq ($(V),0)
+Q	:= @
+NULL	:= 2>/dev/null
+endif
+
+# Tool paths.
+PREFIX	?= arm-none-eabi-
+CC	= $(PREFIX)gcc
+LD	= $(PREFIX)gcc
+OBJCOPY	= $(PREFIX)objcopy
+OBJDUMP	= $(PREFIX)objdump
+OOCD	?= openocd
+
+OPENCM3_INC = $(OPENCM3_DIR)/include
+
+# Inclusion of library header files
+INCLUDES += $(patsubst %,-I%, . $(OPENCM3_INC) )
+
+OBJS = $(CFILES:%.c=$(BUILD_DIR)/%.o)
+
+TGT_CPPFLAGS += -MD
+TGT_CPPFLAGS += -Wall -Wundef $(INCLUDES)
+TGT_CPPFLAGS += $(INCLUDES) $(OPENCM3_DEFS)
+
+TGT_CFLAGS += $(OPT) $(CSTD) -ggdb3
+TGT_CFLAGS += $(ARCH_FLAGS)
+TGT_CFLAGS += -fno-common
+TGT_CFLAGS += -ffunction-sections -fdata-sections
+TGT_CFLAGS += -Wextra -Wshadow -Wno-unused-variable -Wimplicit-function-declaration
+TGT_CFLAGS += -Wredundant-decls -Wstrict-prototypes -Wmissing-prototypes
+
+TGT_CXXFLAGS += $(OPT) $(CXXSTD) -ggdb3
+TGT_CXXFLAGS += $(ARCH_FLAGS)
+TGT_CXXFLAGS += -fno-common
+TGT_CXXFLAGS += -ffunction-sections -fdata-sections
+TGT_CXXFLAGS += -Wextra -Wshadow -Wredundant-decls  -Weffc++
+
+TGT_LDFLAGS += -T$(LDSCRIPT) -L$(OPENCM3_DIR)/lib -nostartfiles
+TGT_LDFLAGS += $(ARCH_FLAGS)
+TGT_LDFLAGS += -specs=nano.specs
+TGT_LDFLAGS += -Wl,--gc-sections
+# OPTIONAL
+#TGT_LDFLAGS += -Wl,-Map=$(PROJECT).map
+ifeq ($(V),99)
+TGT_LDFLAGS += -Wl,--print-gc-sections
+endif
+
+LDLIBS += -l$(OPENCM3_LIB)
+# nosys is only in newer gcc-arm-embedded...
+LDLIBS += -specs=nosys.specs
+#LDLIBS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
+
+# Burn in legacy hell fortran modula pascal yacc idontevenwat
+.SUFFIXES:
+.SUFFIXES: .c .h .o .cxx .elf .bin .list .lss
+
+# Bad make, never *ever* try to get a file out of source control by yourself.
+%: %,v
+%: RCS/%,v
+%: RCS/%
+%: s.%
+%: SCCS/s.%
+
+all: $(PROJECT).elf $(PROJECT).bin
+flash: $(PROJECT).flash
+
+$(LDSCRIPT):
+ifeq (,$(wildcard $(LDSCRIPT)))
+    $(error Unable to find specified linker script: $(LDSCRIPT))
+endif
+
+# Need a special rule to have a bin dir
+$(BUILD_DIR)/%.o: %.c
+	@printf "  CC\t$<\n"
+	@mkdir -p $(dir $@)
+	$(Q)$(CC) $(TGT_CFLAGS) $(CFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $<
+
+$(BUILD_DIR)/%.o: %.cxx
+	@printf "  CXX\t$<\n"
+	@mkdir -p $(dir $@)
+	$(Q)$(CC) $(TGT_CXXFLAGS) $(CXXFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $<
+
+$(PROJECT).elf: $(OBJS) $(LDSCRIPT)
+	@printf "  LD\t$@\n"
+	$(Q)$(LD) $(TGT_LDFLAGS) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $@
+
+%.bin: %.elf
+	@printf "  OBJCOPY\t$@\n"
+	$(Q)$(OBJCOPY) -O binary  $< $@
+
+%.lss: %.elf
+	$(OBJDUMP) -h -S $< > $@
+
+%.list: %.elf
+	$(OBJDUMP) -S $< > $@
+
+%.flash: %.elf
+	@printf "  FLASH\t$<\n"
+ifeq (,$(OOCD_FILE))
+	$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
+		-f target/$(OOCD_TARGET).cfg \
+		-c "program $(*).elf verify reset exit" \
+		$(NULL)
+else
+	$(Q)$(OOCD) -f $(OOCD_FILE) \
+		-c "program $(*).elf verify reset exit" \
+		$(NULL)
+endif
+
+clean:
+	rm -rf $(BUILD_DIR) $(PROJECT).{elf,bin} $(PROJECT).{list,lss,map}
+
+.PHONY: all clean flash
+-include $(OBJS:.o=.d)
+