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OPENCM3_DIR := libopencm3
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# NB: Not exhaustive, some still hardcoded.
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CPU_FLAGS := -mthumb -mcpu=cortex-m3 -msoft-float -mfix-cortex-m3-ldrd
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%.o: %.c
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arm-none-eabi-gcc -Os -g -Wextra -fno-common -ffunction-sections -fdata-sections -Wall -Wundef -I $(OPENCM3_DIR)/include -D STM32F1 ${CPU_FLAGS} -c $*.c -o $*.o
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%.elf: %.o
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arm-none-eabi-gcc --static -nostartfiles -L $(OPENCM3_DIR)/lib -T $(OPENCM3_DIR)/lib/stm32/f1/stm32f100xb.ld -Wl,-Map=$*.map -Wl,--gc-sections ${CPU_FLAGS} $*.o -l opencm3_stm32f1 -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group -o $*.elf
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%.bin: %.elf
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arm-none-eabi-objcopy -Obinary $*.elf $*.bin
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flash: main.bin
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st-flash --reset write main.bin 0x08000000
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.PHONY: flash
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