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BOARD ?= ADAFRUIT_ITSYBITSY_M4_EXPRESS
BOARD_DIR ?= boards/$(BOARD)
BUILD ?= build-$(BOARD)
CROSS_COMPILE ?= arm-none-eabi-
UF2CONV ?= $(TOP)/tools/uf2conv.py
ifeq ($(wildcard $(BOARD_DIR)/.),)
$(error Invalid BOARD specified: $(BOARD_DIR))
endif
include ../../py/mkenv.mk
include $(BOARD_DIR)/mpconfigboard.mk
# Qstr definitions (must come before including py.mk)
QSTR_DEFS = qstrdefsport.h
QSTR_GLOBAL_DEPENDENCIES = $(BOARD_DIR)/mpconfigboard.h
# Include py core make definitions
include $(TOP)/py/py.mk
GIT_SUBMODULES = lib/asf4 lib/tinyusb
INC += -I.
INC += -I$(TOP)
INC += -I$(BUILD)
INC += -I$(BOARD_DIR)
INC += -I$(TOP)/lib/cmsis/inc
INC += -I$(TOP)/lib/asf4/$(shell echo $(MCU_SERIES) | tr '[:upper:]' '[:lower:]')/include
INC += -I$(TOP)/lib/tinyusb/src
CFLAGS_MCU_SAMD21 = -mtune=cortex-m0plus -mcpu=cortex-m0plus -msoft-float
CFLAGS_MCU_SAMD51 = -mtune=cortex-m4 -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard
CFLAGS = $(INC) -Wall -Werror -std=c99 -nostdlib -mthumb $(CFLAGS_MCU_$(MCU_SERIES)) -fsingle-precision-constant -Wdouble-promotion
CFLAGS += -DMCU_$(MCU_SERIES) -D__$(CMSIS_MCU)__
LDFLAGS = -nostdlib $(addprefix -T,$(LD_FILES)) -Map=$@.map --cref
LIBS = $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
# Tune for Debugging or Optimization
ifeq ($(DEBUG),1)
CFLAGS += -O0 -ggdb
else
CFLAGS += -Os -DNDEBUG
LDFLAGS += --gc-sections
CFLAGS += -fdata-sections -ffunction-sections
endif
SRC_C = \
main.c \
modutime.c \
modmachine.c \
mphalport.c \
samd_isr.c \
samd_soc.c \
tusb_port.c \
lib/libc/string0.c \
lib/libm/ef_sqrt.c \
lib/libm/fmodf.c \
lib/libm/math.c \
lib/libm/nearbyintf.c \
lib/mp-readline/readline.c \
lib/tinyusb/src/class/cdc/cdc_device.c \
lib/tinyusb/src/common/tusb_fifo.c \
lib/tinyusb/src/device/usbd.c \
lib/tinyusb/src/device/usbd_control.c \
lib/tinyusb/src/portable/microchip/samd/dcd_samd.c \
lib/tinyusb/src/tusb.c \
lib/utils/gchelper_native.c \
lib/utils/printf.c \
lib/utils/pyexec.c \
lib/utils/stdout_helpers.c \
ifeq ($(MCU_SERIES),SAMD21)
SRC_S = lib/utils/gchelper_m0.s
else
SRC_S = lib/utils/gchelper_m3.s
endif
# List of sources for qstr extraction
SRC_QSTR += modutime.c modmachine.c
OBJ += $(PY_O)
OBJ += $(addprefix $(BUILD)/, $(SRC_C:.c=.o))
OBJ += $(addprefix $(BUILD)/, $(SRC_S:.s=.o))
# Workaround for bug in older gcc, warning on "static usbd_device_t _usbd_dev = { 0 };"
$(BUILD)/lib/tinyusb/src/device/usbd.o: CFLAGS += -Wno-missing-braces
all: $(BUILD)/firmware.uf2
$(BUILD)/firmware.elf: $(OBJ)
$(ECHO) "LINK $@"
$(Q)$(LD) $(LDFLAGS) -o $@ $^ $(LIBS)
$(Q)$(SIZE) $@
$(BUILD)/firmware.bin: $(BUILD)/firmware.elf
$(Q)$(OBJCOPY) -O binary -j .isr_vector -j .text -j .data $^ $(BUILD)/firmware.bin
$(BUILD)/firmware.uf2: $(BUILD)/firmware.bin
$(Q)$(PYTHON) $(UF2CONV) -b $(TEXT0) -c -o $@ $<
include $(TOP)/py/mkrules.mk
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