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##############################################################################
BUILD = build
BIN = watch
##############################################################################
.PHONY: all directory clean size
CC = arm-none-eabi-gcc
OBJCOPY = arm-none-eabi-objcopy
SIZE = arm-none-eabi-size
UF2 = python uf2conv.py
ifeq ($(OS), Windows_NT)
MKDIR = gmkdir
else
MKDIR = mkdir
endif
CFLAGS += -W -Wall --std=gnu99 -Os
CFLAGS += -fno-diagnostics-show-caret
CFLAGS += -fdata-sections -ffunction-sections
CFLAGS += -funsigned-char -funsigned-bitfields
CFLAGS += -mcpu=cortex-m0plus -mthumb
CFLAGS += -MD -MP -MT $(BUILD)/$(*F).o -MF $(BUILD)/$(@F).d
LDFLAGS += -mcpu=cortex-m0plus -mthumb
LDFLAGS += -Wl,--gc-sections
LDFLAGS += -Wl,--script=../linker/saml22j18.ld
INCLUDES += \
-I../include \
-I..
SRCS += \
../main.c \
../startup_saml22.c
DEFINES += \
-D__SAML22J18A__ \
-DDONT_USE_CMSIS_INIT \
-DF_CPU=16000000
CFLAGS += $(INCLUDES) $(DEFINES)
OBJS = $(addprefix $(BUILD)/, $(notdir %/$(subst .c,.o, $(SRCS))))
all: directory $(BUILD)/$(BIN).elf $(BUILD)/$(BIN).hex $(BUILD)/$(BIN).bin $(BUILD)/$(BIN).uf2 size
$(BUILD)/$(BIN).elf: $(OBJS)
@echo LD $@
@$(CC) $(LDFLAGS) $(OBJS) $(LIBS) -o $@
$(BUILD)/$(BIN).hex: $(BUILD)/$(BIN).elf
@echo OBJCOPY $@
@$(OBJCOPY) -O ihex $^ $@
$(BUILD)/$(BIN).bin: $(BUILD)/$(BIN).elf
@echo OBJCOPY $@
@$(OBJCOPY) -O binary $^ $@
$(BUILD)/$(BIN).uf2: $(BUILD)/$(BIN).bin
@echo UF2CONV $@
@$(UF2) $^ -co $@
install:
@$(UF2) -D $(BUILD)/$(BIN).uf2
%.o:
@echo CC $@
@$(CC) $(CFLAGS) $(filter %/$(subst .o,.c,$(notdir $@)), $(SRCS)) -c -o $@
directory:
@$(MKDIR) -p $(BUILD)
size: $(BUILD)/$(BIN).elf
@echo size:
@$(SIZE) -t $^
clean:
@echo clean
@-rm -rf $(BUILD)
-include $(wildcard $(BUILD)/*.d)
|
