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circuitpython/ports/samd/Makefile
robert-hh fc9d66fac6 samd/machine_rtc: Add the machine.RTC class. 
Methods implemented are:
- rtc.init(date)
- rtc.datetime([new_date])
- rtc.calibration(value)

The presence of this class can be controlled by MICROPY_PY_MACHINE_RTC.  If
the RTC module is used, the time module uses the RTC as well.

For boards without a 32kHz crystal, using RTC makes no sense, since it will
then use the ULP32K oscillator, which is not precise at all.  Therefore, it
will by default only be enabled for boards using a crystal, but can be
enabled in the respective mpconfigboard.h.
2022-10-25 23:20:09 +11:00

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Makefile
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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
MCU_SERIES_LOWER = $(shell echo $(MCU_SERIES) | tr '[:upper:]' '[:lower:]')
include ../../py/mkenv.mk
include $(BOARD_DIR)/mpconfigboard.mk
include mcu/$(MCU_SERIES_LOWER)/mpconfigmcu.mk
# Qstr definitions (must come before including py.mk)
QSTR_DEFS = qstrdefsport.h
QSTR_GLOBAL_DEPENDENCIES = $(BOARD_DIR)/mpconfigboard.h mcu/$(MCU_SERIES_LOWER)/mpconfigmcu.h
FROZEN_MANIFEST ?= boards/manifest.py
# Include py core make definitions
include $(TOP)/py/py.mk
include $(TOP)/extmod/extmod.mk
GIT_SUBMODULES += lib/asf4 lib/tinyusb
INC += -I.
INC += -I$(TOP)
INC += -I$(BUILD)
INC += -I$(BOARD_DIR)
INC += -Imcu/$(MCU_SERIES_LOWER)
INC += -I$(TOP)/lib/cmsis/inc
INC += -I$(TOP)/lib/asf4/$(MCU_SERIES_LOWER)/hal/include
INC += -I$(TOP)/lib/asf4/$(MCU_SERIES_LOWER)/hal/utils/include
INC += -I$(TOP)/lib/asf4/$(MCU_SERIES_LOWER)/config
INC += -I$(TOP)/lib/asf4/$(MCU_SERIES_LOWER)/hri
INC += -I$(TOP)/lib/asf4/$(MCU_SERIES_LOWER)/hpl/core
INC += -I$(TOP)/lib/asf4/$(MCU_SERIES_LOWER)/hpl/gclk
INC += -I$(TOP)/lib/asf4/$(MCU_SERIES_LOWER)/hpl/pm
INC += -I$(TOP)/lib/asf4/$(MCU_SERIES_LOWER)/hpl/port
INC += -I$(TOP)/lib/asf4/$(MCU_SERIES_LOWER)/hpl/rtc
INC += -I$(TOP)/lib/asf4/$(MCU_SERIES_LOWER)/hpl/tc
INC += -I$(TOP)/lib/asf4/$(MCU_SERIES_LOWER)/include
INC += -I$(TOP)/lib/asf4/$(MCU_SERIES_LOWER)/include/pio
INC += -I$(TOP)/lib/tinyusb/src
MAKE_PIN_AF = boards/make-pin-af.py
PIN_AF_TABLE_CSV = mcu/$(MCU_SERIES_LOWER)/pin-af-table.csv
GEN_PIN_AF = pin_af_table.c
MAKE_PINS = boards/make-pins.py
BOARD_PINS = $(BOARD_DIR)/pins.csv
GEN_PINS_SRC = $(BUILD)/pins.c
GEN_PINS_HDR = $(BUILD)/pins.h
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)__
CFLAGS += $(CFLAGS_EXTRA)
LDFLAGS += -nostdlib $(addprefix -T,$(LD_FILES)) -Map=$@.map --cref
LIBS += $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
# Tune for Debugging or Optimization
CFLAGS += -g # always include debug info in the ELF
ifeq ($(DEBUG),1)
CFLAGS += -O0
else
CFLAGS += -Os -DNDEBUG
LDFLAGS += --gc-sections
CFLAGS += -fdata-sections -ffunction-sections
endif
# Flags for optional C++ source code
CXXFLAGS += $(filter-out -std=c99,$(CFLAGS))
# TODO make this common -- shouldn't be using these "private" vars from py.mk
ifneq ($(SRC_CXX)$(SRC_USERMOD_CXX)$(SRC_USERMOD_LIB_CXX),)
LIBSTDCPP_FILE_NAME = "$(shell $(CXX) $(CXXFLAGS) -print-file-name=libstdc++.a)"
LDFLAGS += -L"$(shell dirname $(LIBSTDCPP_FILE_NAME))"
endif
SRC_C += \
mcu/$(MCU_SERIES_LOWER)/clock_config.c \
help.c \
machine_adc.c \
machine_bitstream.c \
machine_dac.c \
machine_i2c.c \
machine_led.c \
machine_pin.c \
machine_rtc.c \
machine_spi.c \
machine_timer.c \
machine_uart.c \
machine_wdt.c \
main.c \
modutime.c \
modmachine.c \
modsamd.c \
mphalport.c \
pendsv.c \
pin_af.c \
samd_flash.c \
samd_isr.c \
samd_soc.c \
tusb_port.c \
SHARED_SRC_C += \
shared/runtime/mpirq.c \
shared/libc/printf.c \
shared/libc/string0.c \
shared/readline/readline.c \
shared/runtime/gchelper_native.c \
shared/runtime/interrupt_char.c \
shared/runtime/pyexec.c \
shared/runtime/softtimer.c \
shared/runtime/stdout_helpers.c \
shared/runtime/sys_stdio_mphal.c \
shared/timeutils/timeutils.c \
ASF4_SRC_C += $(addprefix lib/asf4/$(MCU_SERIES_LOWER)/,\
hal/src/hal_atomic.c \
hal/src/hal_flash.c \
hpl/nvmctrl/hpl_nvmctrl.c \
)
LIBM_SRC_C += $(addprefix lib/libm/,\
ef_sqrt.c \
fmodf.c \
math.c \
nearbyintf.c \
)
TINYUSB_SRC_C += $(addprefix lib/tinyusb/src/,\
class/cdc/cdc_device.c \
common/tusb_fifo.c \
device/usbd.c \
device/usbd_control.c \
portable/microchip/samd/dcd_samd.c \
tusb.c \
)
DRIVERS_SRC_C += \
drivers/bus/softspi.c \
# List of sources for qstr extraction
SRC_QSTR += $(SRC_C) $(SHARED_SRC_C) $(SRC_CXX) $(GEN_PINS_SRC)
OBJ += $(PY_O)
OBJ += $(addprefix $(BUILD)/, $(SRC_C:.c=.o))
OBJ += $(addprefix $(BUILD)/, $(SRC_CXX:.cpp=.o))
OBJ += $(addprefix $(BUILD)/, $(SRC_S:.s=.o))
OBJ += $(addprefix $(BUILD)/, $(SHARED_SRC_C:.c=.o))
OBJ += $(addprefix $(BUILD)/, $(ASF4_SRC_C:.c=.o))
OBJ += $(addprefix $(BUILD)/, $(LIBM_SRC_C:.c=.o))
OBJ += $(addprefix $(BUILD)/, $(DRIVERS_SRC_C:.c=.o))
OBJ += $(addprefix $(BUILD)/, $(TINYUSB_SRC_C:.c=.o))
OBJ += $(GEN_PINS_SRC:.c=.o)
ifneq ($(FROZEN_MANIFEST),)
CFLAGS += -DMICROPY_MODULE_FROZEN_MPY
CFLAGS += -DMICROPY_MODULE_FROZEN_STR
CFLAGS += -DMICROPY_QSTR_EXTRA_POOL=mp_qstr_frozen_const_pool
endif
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 $@ $<
pin_af.c: $(BUILD)/$(GEN_PIN_AF)
$(BUILD)/$(GEN_PIN_AF): $(PIN_AF_TABLE_CSV) | $(HEADER_BUILD)
$(ECHO) "Create $@"
$(Q)$(PYTHON) $(MAKE_PIN_AF) --csv $(PIN_AF_TABLE_CSV) --table $(BUILD)/$(GEN_PIN_AF) --mcu $(MCU_SERIES)
machine_led.c machine_pin.c modsamd.c: $(GEN_PINS_HDR)
$(GEN_PINS_SRC) $(GEN_PINS_HDR): $(BOARD_PINS) | $(HEADER_BUILD)
$(ECHO) "Create $@"
$(Q)$(PYTHON) $(MAKE_PINS) --board $(BOARD_PINS) --pins $(GEN_PINS_SRC) --inc $(GEN_PINS_HDR)
$(GEN_PINS_SRC:.c=.o): $(GEN_PINS_SRC)
$(call compile_c)
include $(TOP)/py/mkrules.mk
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