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circuitpython/ports/stm32
Damien George 58ebeca6a9 drivers/bus: Pull out software SPI implementation to dedicated driver. 5 years ago
..
boards stm32/boards: Add startup_stm32l4.s for L4 series specific startup. 5 years ago
modules stm32: Add support for DHT11/DHT22 sensors. 5 years ago
usbdev stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
usbhost ports: Make new ports/ sub-directory and move all ports there. 5 years ago
.gitignore ports: Make new ports/ sub-directory and move all ports there. 5 years ago
Makefile drivers/bus: Pull out software SPI implementation to dedicated driver. 5 years ago
README.md all: Update Makefiles and others to build with new ports/ dir layout. 5 years ago
accel.c all: Remove inclusion of internal py header files. 5 years ago
accel.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
adc.c stm32: Add board config option to enable/disable the ADC. 5 years ago
adc.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
autoflash ports: Make new ports/ sub-directory and move all ports there. 5 years ago
bufhelper.c ports: Make new ports/ sub-directory and move all ports there. 5 years ago
bufhelper.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
can.c stm32: Update HAL macro and constant names to use newer versions. 5 years ago
can.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
dac.c ports: Make new ports/ sub-directory and move all ports there. 5 years ago
dac.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
dma.c stm32/dma: Add DMA support for H7 MCUs. 5 years ago
dma.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
extint.c stm32/extint: Add EXTI support for H7 MCUs. 5 years ago
extint.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
fatfs_port.c stm32: Update HAL macro and constant names to use newer versions. 5 years ago
flash.c stm32/flash: Add flash support for H7 MCUs. 5 years ago
flash.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
flashbdev.c stm32/flash: Add flash support for H7 MCUs. 5 years ago
font_petme128_8x8.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
gccollect.c all: Remove inclusion of internal py header files. 5 years ago
gccollect.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
gchelper.s ports: Make new ports/ sub-directory and move all ports there. 5 years ago
help.c py/builtinhelp: Change signature of help text var from pointer to array. 5 years ago
i2c.c stm32/i2c: On F4 MCUs report the actual I2C SCL frequency. 5 years ago
i2c.h stm32/i2c: On F4 MCUs report the actual I2C SCL frequency. 5 years ago
irq.c all: Remove inclusion of internal py header files. 5 years ago
irq.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
lcd.c stm32: Update LCD and network drivers to work with new SPI API. 5 years ago
lcd.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
led.c all: Remove inclusion of internal py header files. 5 years ago
led.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
machine_i2c.c stm32/i2c: On F4 MCUs report the actual I2C SCL frequency. 5 years ago
main.c stm32/main: Enable D2 SRAM1/2/3 clocks on H7 MCUs. 5 years ago
make-stmconst.py stm32/make-stmconst.py: Make sure mpz const data lives in ROM. 5 years ago
modmachine.c stm32/modmachine: Support basic H7 MCU features. 5 years ago
modmachine.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
modnetwork.c all: Remove inclusion of internal py header files. 5 years ago
modnetwork.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
modnwcc3k.c stm32: Update LCD and network drivers to work with new SPI API. 5 years ago
modnwwiznet5k.c stm32: Update LCD and network drivers to work with new SPI API. 5 years ago
modpyb.c stm32: Add board config option to enable/disable the ADC. 5 years ago
modstm.c ports: Make new ports/ sub-directory and move all ports there. 5 years ago
moduos.c stm32: Make uos.dupterm() conform to specs by using extmod version. 5 years ago
modusocket.c stm32/modusocket: Return OSError(-2) if getaddrinfo fails. 5 years ago
modutime.c stm32: Update HAL macro and constant names to use newer versions. 5 years ago
mpconfigboard_common.h stm32/mpconfigboard_common: Add STM32H7 common configuration. 5 years ago
mpconfigport.h drivers/bus: Pull out software SPI implementation to dedicated driver. 5 years ago
mpconfigport.mk stm32/modnwwiznet5k: Add support for W5500 Ethernet chip. 5 years ago
mphalport.c stm32: Introduce MICROPY_HW_ENABLE_USB and clean up USB config. 5 years ago
mphalport.h stm32/mphalport: Use GPIO BSRRL/BSRRH registers for H7 MCUs. 5 years ago
mpthreadport.c all: Remove inclusion of internal py header files. 5 years ago
mpthreadport.h ports: Make new ports/ sub-directory and move all ports there. 5 years ago
pendsv.c all: Remove inclusion of internal py header files. 5 years ago
pendsv.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
pin.c stm32: Update HAL macro and constant names to use newer versions. 5 years ago
pin.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
pin_defs_stm32.c all: Update Makefiles and others to build with new ports/ dir layout. 5 years ago
pin_defs_stm32.h all: Update Makefiles and others to build with new ports/ dir layout. 5 years ago
pin_named_pins.c ports: Make new ports/ sub-directory and move all ports there. 5 years ago
portmodules.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
pybcdc.inf_template ports: Make new ports/ sub-directory and move all ports there. 5 years ago
pybthread.c ports: Make new ports/ sub-directory and move all ports there. 5 years ago
pybthread.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
qspi.c stm32/qspi: Add hardware QSPI driver, with memory-map capability. 5 years ago
qspi.h stm32/qspi: Add hardware QSPI driver, with memory-map capability. 5 years ago
qstrdefsport.h ports: Make new ports/ sub-directory and move all ports there. 5 years ago
rng.c stm32/rng: Simplify RNG implementation by accessing raw peripheral regs. 5 years ago
rng.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
rtc.c stm32/rtc: Add RTC support for H7 MCUs. 5 years ago
rtc.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
sdcard.c stm32/sdcard: Use maximum speed SDMMC clock on F7 MCUs. 5 years ago
sdcard.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
servo.c ports: Make new ports/ sub-directory and move all ports there. 5 years ago
servo.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
spi.c stm32/spi: Further updates to use newer versions of HAL names. 5 years ago
spi.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
spibdev.c drivers/bus: Pull out software SPI implementation to dedicated driver. 5 years ago
stm32_it.c stm32/stm32_it: Add support for H7 MCUs. 5 years ago
stm32_it.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
storage.c stm32/spibdev: Convert to use multiple block read/write interface. 5 years ago
storage.h stm32/spibdev: Convert to use multiple block read/write interface. 5 years ago
system_stm32.c stm32/system_stm32: Fix CONFIG_RCC_CR_2ND value to use bitwise or. 5 years ago
systick.c ports: Make new ports/ sub-directory and move all ports there. 5 years ago
systick.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
timer.c stm32/timer: Add Timer support for H7 MCUs. 5 years ago
timer.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
uart.c stm32/uart: Add UART support for H7 MCUs. 5 years ago
uart.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
usb.c stm32: Introduce MICROPY_HW_ENABLE_USB and clean up USB config. 5 years ago
usb.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
usbd_cdc_interface.c stm32/usbdev: Add support for high-speed USB device mode. 5 years ago
usbd_cdc_interface.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
usbd_conf.c stm32/usbd_conf: Add USB support for H7 MCUs. 5 years ago
usbd_conf.h stm32/usbd_conf.h: Add include of stdint.h to fix compilation issues. 5 years ago
usbd_desc.c stm32/usbdev: Combine all str descriptor accessor funcs into one func. 5 years ago
usbd_desc.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
usbd_hid_interface.c stm32/usbdev: Put all state for the USB device driver in a struct. 5 years ago
usbd_hid_interface.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
usbd_msc_storage.c stm32/usbdev: Reduce dependency on py header files. 5 years ago
usbd_msc_storage.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
usrsw.c ports: Make new ports/ sub-directory and move all ports there. 5 years ago
usrsw.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
wdt.c stm32/wdt: Add WDT support for H7 MCUs. 5 years ago
wdt.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago

README.md

MicroPython port to STM32 MCUs

This directory contains the port of MicroPython to ST's line of STM32Fxxx microcontrollers. It is based on the STM32Cube HAL library and currently supports: STM32F401, STM32F405, STM32F411, STM32F429, STM32F746.

The officially supported boards are the line of pyboards: PYBv1.0 and PYBv1.1 (both with STM32F405), and PYBLITEv1.0 (with STM32F411). See micropython.org/pyboard for further details.

Other boards that are supported include ST Discovery and Nucleo boards. See the boards/ subdirectory, which contains the configuration files used to build each individual board.

Build instructions

Before building the firmware for a given board the MicroPython cross-compiler must be built; it will be used to pre-compile some of the built-in scripts to bytecode. The cross-compiler is built and run on the host machine, using:

$ make -C mpy-cross

This command should be executed from the root directory of this repository. All other commands below should be executed from the ports/stm32/ directory.

An ARM compiler is required for the build, along with the associated binary utilities. The default compiler is arm-none-eabi-gcc, which is available for Arch Linux via the package arm-none-eabi-gcc, for Ubuntu via instructions here, or see here for the main GCC ARM Embedded page. The compiler can be changed using the CROSS_COMPILE variable when invoking make.

To build for a given board, run:

$ make BOARD=PYBV11

The default board is PYBV10 but any of the names of the subdirectories in the boards/ directory can be passed as the argument to BOARD=. The above command should produce binary images in the build-PYBV11/ subdirectory (or the equivalent directory for the board specified).

You must then get your board/microcontroller into DFU mode. On the pyboard connect the 3V3 pin to the P1/DFU pin with a wire (they are next to each other on the bottom left of the board, second row from the bottom) and then reset (by pressing the RST button) or power on the board. Then flash the firmware using the command:

$ make BOARD=PYBV11 deploy

This will use the included tools/pydfu.py script. You can use instead the dfu-util program (available here) by passing USE_PYDFU=0:

$ make BOARD=PYBV11 USE_PYDFU=0 deploy

If flashing the firmware does not work it may be because you don't have the correct permissions. Try then:

$ sudo make BOARD=PYBV11 deploy

Or using dfu-util directly:

$ sudo dfu-util -a 0 -d 0483:df11 -D build-PYBV11/firmware.dfu

ST Discovery or Nucleo boards have a builtin programmer called ST-LINK. With these boards and using Linux or OS X, you have the option to upload the stm32 firmware using the st-flash utility from the stlink project. To do so, connect the board with a mini USB cable to its ST-LINK USB port and then use the make target deploy-stlink. For example, if you have the STM32F4DISCOVERY board, you can run:

$ make BOARD=STM32F4DISC deploy-stlink

The st-flash program should detect the USB connection to the board automatically. If not, run lsusb to determine its USB bus and device number and set the STLINK_DEVICE environment variable accordingly, using the format <USB_BUS>:<USB_ADDR>. Example:

$ lsusb
[...]
Bus 002 Device 035: ID 0483:3748 STMicroelectronics ST-LINK/V2
$ export STLINK_DEVICE="002:0035"
$ make BOARD=STM32F4DISC deploy-stlink

Flashing the Firmware with OpenOCD

Another option to deploy the firmware on ST Discovery or Nucleo boards with a ST-LINK interface uses OpenOCD. Connect the board with a mini USB cable to its ST-LINK USB port and then use the make target deploy-openocd. For example, if you have the STM32F4DISCOVERY board:

$ make BOARD=STM32F4DISC deploy-openocd

The openocd program, which writes the firmware to the target board's flash, is configured via the file ports/stm32/boards/openocd_stm32f4.cfg. This configuration should work for all boards based on a STM32F4xx MCU with a ST-LINKv2 interface. You can override the path to this configuration by setting OPENOCD_CONFIG in your Makefile or on the command line.

Accessing the board

Once built and deployed, access the MicroPython REPL (the Python prompt) via USB serial or UART, depending on the board. For the pyboard you can try:

$ picocom /dev/ttyACM0