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‎ports/stm/.gitignore

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# Build files
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#####################
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build-*/
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# Reference files
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#####################
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ref/
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.gdb_history

‎ports/stm/Makefile

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# This file is part of the MicroPython project, http://micropython.org/
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#
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# The MIT License (MIT)
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#
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# Copyright (c) 2019 Dan Halbert for Adafruit Industries
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# Copyright (c) 2019 Lucian Copeland for Adafruit Industries
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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# DEBUG = 1
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# Select the board to build for.
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ifeq ($(BOARD),)
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$(error You must provide a BOARD parameter)
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else
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ifeq ($(wildcard boards/$(BOARD)/.),)
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$(error Invalid BOARD specified)
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endif
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endif
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# If the build directory is not given, make it reflect the board name.
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BUILD ?= build-$(BOARD)
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include ../../py/mkenv.mk
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# Board-specific
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include boards/$(BOARD)/mpconfigboard.mk
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# Port-specific
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include mpconfigport.mk
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# CircuitPython-specific
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include $(TOP)/py/circuitpy_mpconfig.mk
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# qstr definitions (must come before including py.mk)
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QSTR_DEFS = qstrdefsport.h
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# include py core make definitions
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include $(TOP)/py/py.mk
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include $(TOP)/supervisor/supervisor.mk
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# Include make rules and variables common across CircuitPython builds.
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include $(TOP)/py/circuitpy_defns.mk
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CROSS_COMPILE = arm-none-eabi-
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#######################################
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# CFLAGS
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#######################################
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INC += -I.
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INC += -I../..
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INC += -I$(BUILD)
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INC += -I$(BUILD)/genhdr
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INC += -I./stm32f4/STM32F4xx_HAL_Driver/Inc
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INC += -I./stm32f4/STM32F4xx_HAL_Driver/Inc/Legacy
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INC += -I./stm32f4/CMSIS/Device/ST/STM32F4xx/Include
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INC += -I./stm32f4/CMSIS/Include
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INC += -I./boards
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INC += -I./boards/$(BOARD)
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INC += -I./peripherals
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INC += -I../../lib/mp-readline
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INC += -I../../lib/tinyusb/src
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INC += -I../../supervisor/shared/usb
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#Debugging/Optimization
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ifeq ($(DEBUG), 1)
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CFLAGS += -ggdb
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# You may want to enable these flags to make setting breakpoints easier.
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CFLAGS += -fno-inline -fno-ipa-sra
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else
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CFLAGS += -Os -DNDEBUG
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CFLAGS += -ggdb
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# TODO: Test with -flto
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### CFLAGS += -flto
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endif
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C_DEFS = -DMCU_PACKAGE=$(MCU_PACKAGE) -DUSE_HAL_DRIVER -DUSE_FULL_LL_DRIVER -D$(CMSIS_MCU)
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CFLAGS += $(INC) -Werror -Wall -std=gnu11 -nostdlib $(BASE_CFLAGS) $(C_DEFS) $(CFLAGS_MOD) $(COPT)
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# Undo some warnings.
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# STM32 apparently also uses undefined preprocessor variables quite casually,
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# so we can't do warning checks for these.
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CFLAGS += -Wno-undef
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# STM32 might do casts that increase alignment requirements.
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CFLAGS += -Wno-cast-align
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CFLAGS += \
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-mthumb \
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-mabi=aapcs-linux \
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-mfloat-abi=hard \
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-mcpu=cortex-m4 \
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-mfpu=fpv4-sp-d16
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# TODO: check this
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CFLAGS += -D__START=main
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#need both command and valid file to use uf2 bootloader
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ifndef LD_FILE
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ifneq ($(and $(UF2_BOOTLOADER),$(LD_BOOT)),)
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LD_FILE = $(LD_BOOT)
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BOOTLOADER_OFFSET = $(UF2_OFFSET)
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CFLAGS += -DUF2_BOOTLOADER_ENABLED
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else
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LD_FILE = $(LD_DEFAULT)
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endif
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endif
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# Add bootloader specific items
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ifndef BOOTLOADER_OFFSET
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BOOTLOADER_OFFSET := 0x8000000
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endif
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LDFLAGS = $(CFLAGS) -fshort-enums -Wl,-nostdlib -Wl,-T,$(LD_FILE) -Wl,-Map=$@.map -Wl,-cref -Wl,-gc-sections -specs=nano.specs
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LIBS := -lgcc -lc
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LDFLAGS += -mthumb -mcpu=cortex-m4
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# Use toolchain libm if we're not using our own.
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ifndef INTERNAL_LIBM
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LIBS += -lm
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endif
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# TinyUSB defines
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CFLAGS += -DCFG_TUSB_MCU=OPT_MCU_STM32F4 -DCFG_TUD_CDC_RX_BUFSIZE=1024 -DCFG_TUD_CDC_TX_BUFSIZE=1024 -DCFG_TUD_MSC_BUFSIZE=4096 -DCFG_TUD_MIDI_RX_BUFSIZE=128 -DCFG_TUD_MIDI_TX_BUFSIZE=128
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######################################
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# source
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######################################
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SRC_STM32 = \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_adc.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_adc_ex.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dac.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dac_ex.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_i2c.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_i2c_ex.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_qspi.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rng.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rtc.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rtc_ex.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_spi.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_tim.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_tim_ex.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_uart.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_usart.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rcc.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rcc_ex.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_flash.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_flash_ex.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_flash_ramfunc.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_gpio.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma_ex.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_pwr.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_pwr_ex.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_cortex.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_exti.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sd.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_gpio.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_adc.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_usb.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_fsmc.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_i2c.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_dma.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_sdmmc.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_usart.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_rcc.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_utils.c \
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stm32f4/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_exti.c \
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system_stm32f4xx.c
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SRC_C += \
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background.c \
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fatfs_port.c \
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mphalport.c \
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tick.c \
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boards/$(BOARD)/board.c \
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boards/$(BOARD)/pins.c \
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peripherals/stm32f4/$(MCU_SUB_VARIANT)/pins.c \
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peripherals/stm32f4/$(MCU_SUB_VARIANT)/clocks.c \
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peripherals/stm32f4/$(MCU_SUB_VARIANT)/gpio.c \
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peripherals/stm32f4/$(MCU_SUB_VARIANT)/periph.c \
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lib/libc/string0.c \
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lib/mp-readline/readline.c \
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lib/oofatfs/ff.c \
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lib/oofatfs/option/ccsbcs.c \
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lib/timeutils/timeutils.c \
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lib/utils/buffer_helper.c \
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lib/utils/context_manager_helpers.c \
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lib/utils/interrupt_char.c \
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lib/utils/pyexec.c \
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lib/utils/stdout_helpers.c \
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lib/utils/sys_stdio_mphal.c \
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supervisor/shared/memory.c
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ifneq ($(USB),FALSE)
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SRC_C += lib/tinyusb/src/portable/st/synopsys/dcd_synopsys.c
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endif
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SRC_S = \
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supervisor/cpu.s \
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boards/startup_$(MCU_SUB_VARIANT).s
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SRC_COMMON_HAL_EXPANDED = $(addprefix shared-bindings/, $(SRC_COMMON_HAL)) \
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$(addprefix shared-bindings/, $(SRC_BINDINGS_ENUMS)) \
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$(addprefix common-hal/, $(SRC_COMMON_HAL))
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SRC_SHARED_MODULE_EXPANDED = $(addprefix shared-bindings/, $(SRC_SHARED_MODULE)) \
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$(addprefix shared-module/, $(SRC_SHARED_MODULE)) \
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$(addprefix shared-module/, $(SRC_SHARED_MODULE_INTERNAL))
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ifneq ($(FROZEN_MPY_DIR),)
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FROZEN_MPY_PY_FILES := $(shell find -L $(FROZEN_MPY_DIR) -type f -name '*.py')
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FROZEN_MPY_MPY_FILES := $(addprefix $(BUILD)/,$(FROZEN_MPY_PY_FILES:.py=.mpy))
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endif
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OBJ += $(PY_O) $(SUPERVISOR_O) $(addprefix $(BUILD)/, $(SRC_C:.c=.o))
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OBJ += $(addprefix $(BUILD)/, $(SRC_STM32:.c=.o))
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OBJ += $(addprefix $(BUILD)/, $(SRC_COMMON_HAL_EXPANDED:.c=.o))
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OBJ += $(addprefix $(BUILD)/, $(SRC_SHARED_MODULE_EXPANDED:.c=.o))
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ifeq ($(INTERNAL_LIBM),1)
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OBJ += $(addprefix $(BUILD)/, $(SRC_LIBM:.c=.o))
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endif
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OBJ += $(addprefix $(BUILD)/, $(SRC_S:.s=.o))
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OBJ += $(addprefix $(BUILD)/, $(SRC_MOD:.c=.o))
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$(BUILD)/$(FATFS_DIR)/ff.o: COPT += -Os
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$(filter $(PY_BUILD)/../extmod/vfs_fat_%.o, $(PY_O)): COPT += -Os
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# List of sources for qstr extraction
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SRC_QSTR += $(SRC_C) $(SRC_SUPERVISOR) $(SRC_MOD) $(SRC_COMMON_HAL_EXPANDED) $(SRC_SHARED_MODULE_EXPANDED)
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# Sources that only hold QSTRs after pre-processing.
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SRC_QSTR_PREPROCESSOR +=
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all: $(BUILD)/firmware.bin $(BUILD)/firmware.uf2
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$(BUILD)/firmware.elf: $(OBJ)
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$(STEPECHO) "LINK $@"
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$(Q)$(CC) -o $@ $(LDFLAGS) $^ -Wl,--start-group $(LIBS) -Wl,--end-group
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$(Q)$(SIZE) $@ | $(PYTHON3) $(TOP)/tools/build_memory_info.py $(LD_FILE)
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$(BUILD)/firmware.bin: $(BUILD)/firmware.elf
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$(STEPECHO) "Create $@"
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$(Q)$(OBJCOPY) -O binary $^ $@
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# $(Q)$(OBJCOPY) -O binary -j .vectors -j .text -j .data $^ $@
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$(BUILD)/firmware.hex: $(BUILD)/firmware.elf
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$(STEPECHO) "Create $@"
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$(Q)$(OBJCOPY) -O ihex $^ $@
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# $(Q)$(OBJCOPY) -O ihex -j .vectors -j .text -j .data $^ $@
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$(BUILD)/firmware.uf2: $(BUILD)/firmware.hex
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$(ECHO) "Create $@"
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$(PYTHON3) $(TOP)/tools/uf2/utils/uf2conv.py -f 0x57755a57 -b $(BOOTLOADER_OFFSET) -c -o "$(BUILD)/firmware.uf2" $^
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include $(TOP)/py/mkrules.mk
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# Print out the value of a make variable.
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# https://stackoverflow.com/questions/16467718/how-to-print-out-a-variable-in-makefile
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print-%:
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@echo $* = $($*)

‎ports/stm/README.md

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# CircuitPython Port To The ST Microelectronics STM32F4 Series
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This is a port of CircuitPython to the STM32F4 series of chips.

‎ports/stm/background.c

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/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/runtime.h"
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#include "supervisor/filesystem.h"
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#include "supervisor/usb.h"
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#include "supervisor/shared/stack.h"
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#if CIRCUITPY_DISPLAYIO
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#include "shared-module/displayio/__init__.h"
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#endif
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static bool running_background_tasks = false;
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void background_tasks_reset(void) {
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running_background_tasks = false;
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}
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void run_background_tasks(void) {
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// Don't call ourselves recursively.
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if (running_background_tasks) {
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return;
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}
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running_background_tasks = true;
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filesystem_background();
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#if USB_AVAILABLE
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usb_background();
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#endif
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#if CIRCUITPY_DISPLAYIO
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displayio_background();
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#endif
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running_background_tasks = false;
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assert_heap_ok();
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}

‎ports/stm/background.h

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/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Dan Halbert for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef MICROPY_INCLUDED_STM32F4_BACKGROUND_H
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#define MICROPY_INCLUDED_STM32F4_BACKGROUND_H
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#include <stdbool.h>
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void background_tasks_reset(void);
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void run_background_tasks(void);
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#endif // MICROPY_INCLUDED_STM32F4_BACKGROUND_H

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