micropython/ports/stm32
Chris Mason c24d81119c stm32/boards/NUCLEO_L452RE: Add definition files for new board. 2019-07-08 16:50:45 +10:00
..
boards stm32/boards/NUCLEO_L452RE: Add definition files for new board. 2019-07-08 16:50:45 +10:00
lwip_inc stm32/lwip_inc: Define LWIP_NO_CTYPE_H=1 to use lwIP ctype funcs. 2019-07-04 10:36:51 +10:00
mbedtls stm32: Integrate optional mbedTLS component for ussl module. 2019-06-05 15:37:31 +10:00
mboot stm32/mboot/README: Fix some typos, describe bootloader and fwupdate.py. 2019-05-29 16:26:02 +10:00
modules
usbdev stm32: Update components to work with new H7xx HAL. 2019-07-03 23:40:49 +10:00
usbhost
.gitignore
Makefile stm32: Remove SystemInit funcs, use stm32lib versions instead. 2019-07-08 15:23:53 +10:00
README.md
accel.c stm32/i2c: Make timeout for hardware I2C configurable. 2019-05-21 12:20:19 +10:00
accel.h
adc.c stm32: Add support for STM32L452 MCUs. 2019-07-08 16:50:19 +10:00
adc.h
autoflash
bufhelper.c
bufhelper.h
can.c stm32: Add support for F413 MCUs. 2019-05-02 16:26:53 +10:00
can.h stm32: Add support for F413 MCUs. 2019-05-02 16:26:53 +10:00
dac.c stm32: Add support for STM32L452 MCUs. 2019-07-08 16:50:19 +10:00
dac.h stm32/dac: Rework DAC driver to use direct register access. 2019-04-24 15:51:19 +10:00
dma.c stm32: Add support for STM32L452 MCUs. 2019-07-08 16:50:19 +10:00
dma.h stm32: Add support for STM32L452 MCUs. 2019-07-08 16:50:19 +10:00
eth.c stm32/eth: Use MPU helper functions to configure MPU for ETH use. 2019-07-03 01:27:33 +10:00
eth.h
extint.c stm32: Add initial support for STM32L0xx MCUs. 2019-07-05 17:24:59 +10:00
extint.h
factoryreset.c stm32/modpyb: Add pyb.country() function to set the country. 2019-06-03 16:47:35 +10:00
factoryreset.h stm32: Move factory reset files and code to separate source file. 2019-05-07 13:59:51 +10:00
fatfs_port.c
flash.c stm32: Add initial support for STM32L0xx MCUs. 2019-07-05 17:24:59 +10:00
flash.h
flashbdev.c stm32: Add support for STM32L452 MCUs. 2019-07-08 16:50:19 +10:00
font_petme128_8x8.h
gccollect.c
gccollect.h stm32: In link script, define start of stack separately from heap end. 2019-06-14 15:29:24 +10:00
help.c
i2c.c stm32/i2c: Make timeout for hardware I2C configurable. 2019-05-21 12:20:19 +10:00
i2c.h stm32/i2c: Make timeout for hardware I2C configurable. 2019-05-21 12:20:19 +10:00
i2cslave.c stm32/i2cslave: Add support for H7 MCUs. 2019-04-08 14:28:45 +10:00
i2cslave.h stm32/i2cslave: Add support for H7 MCUs. 2019-04-08 14:28:45 +10:00
irq.c stm32/irq: Fix IRQ_ENABLE_STATS stats config to work on all MCUs. 2019-05-15 16:04:01 +10:00
irq.h stm32/irq: Fix IRQ_ENABLE_STATS stats config to work on all MCUs. 2019-05-15 16:04:01 +10:00
lcd.c
lcd.h
led.c
led.h
machine_i2c.c stm32/i2c: Support setting the I2C TIMINGR value via keyword arg. 2019-05-21 13:45:17 +10:00
machine_spi.c
machine_uart.c stm32: Add initial support for STM32L0xx MCUs. 2019-07-05 17:24:59 +10:00
main.c stm32: Remove SystemInit funcs, use stm32lib versions instead. 2019-07-08 15:23:53 +10:00
make-stmconst.py
modmachine.c stm32: Add initial support for STM32L0xx MCUs. 2019-07-05 17:24:59 +10:00
modmachine.h
modnetwork.c stm32: Support optional lwIP mDNS responder. 2019-06-05 16:14:09 +10:00
modnetwork.h stm32/modnetwork: Replace generic netif NIC polling with specific code. 2019-06-03 17:14:34 +10:00
modnwcc3k.c
modnwwiznet5k.c
modpyb.c stm32/modpyb: Add pyb.country() function to set the country. 2019-06-03 16:47:35 +10:00
modstm.c
moduos.c stm32/moduos: Allow to compile again without USB enabled. 2019-04-01 17:11:39 +11:00
modusocket.c
modutime.c
mpconfigboard_common.h stm32: Add initial support for STM32L0xx MCUs. 2019-07-05 17:24:59 +10:00
mpconfigport.h stm32/mpconfigport.h: Make "framebuf" module configurable by a board. 2019-07-05 17:26:49 +10:00
mpconfigport.mk
mphalport.c stm32: Add initial support for STM32L0xx MCUs. 2019-07-05 17:24:59 +10:00
mphalport.h stm32: Update components to work with new H7xx HAL. 2019-07-03 23:40:49 +10:00
mpthreadport.c
mpthreadport.h
mpu.h stm32/mpu: Include MPU functions when ETH is enabled. 2019-07-03 23:50:34 +10:00
network_lan.c
network_wiznet5k.c stm32/modnetwork: Replace generic netif NIC polling with specific code. 2019-06-03 17:14:34 +10:00
pendsv.c
pendsv.h stm32: Integrate in the cyw43 driver and network.WLAN class. 2019-06-03 17:14:34 +10:00
pin.c
pin.h
pin_defs_stm32.c
pin_defs_stm32.h
pin_named_pins.c
pin_static_af.h
portmodules.h
powerctrl.c stm32/powerctrl: Move L0's SystemClock_Config to powerctrlboot.c file. 2019-07-08 15:23:53 +10:00
powerctrl.h stm32/powerctrl: Move L0's SystemClock_Config to powerctrlboot.c file. 2019-07-08 15:23:53 +10:00
powerctrlboot.c stm32/powerctrl: Move F0's SystemClock_Config to powerctrlboot.c. 2019-07-08 15:23:53 +10:00
pyb_i2c.c stm32/i2c: Support setting the I2C TIMINGR value via keyword arg. 2019-05-21 13:45:17 +10:00
pyb_spi.c
pybcdc.inf_template
pybthread.c stm32: In link script, define start of stack separately from heap end. 2019-06-14 15:29:24 +10:00
pybthread.h
qspi.c stm32/qspi: Handle bus acquisition. 2019-07-03 01:27:33 +10:00
qspi.h
qstrdefsport.h
resethandler.s
resethandler_m0.s
rng.c
rng.h
rtc.c stm32: Add initial support for STM32L0xx MCUs. 2019-07-05 17:24:59 +10:00
rtc.h
sdcard.c stm32/sdcard: Add hook for a board to power on SD/MMC. 2019-07-04 11:10:54 +10:00
sdcard.h
sdio.c stm32: Add low-level SDIO interface for cyw43 driver. 2019-06-03 16:53:46 +10:00
sdio.h stm32: Add low-level SDIO interface for cyw43 driver. 2019-06-03 16:53:46 +10:00
sdram.c stm32/sdram: Use MPU helper functions to configure MPU for SDRAM use. 2019-07-03 01:27:33 +10:00
sdram.h
servo.c
servo.h
spi.c stm32/spi: Factor out code to calculate SPI source frequency. 2019-07-03 12:02:46 +10:00
spi.h
spibdev.c
stm32_it.c stm32: Update components to work with new H7xx HAL. 2019-07-03 23:40:49 +10:00
stm32_it.h
storage.c
storage.h
system_stm32.c stm32: Remove SystemInit funcs, use stm32lib versions instead. 2019-07-08 15:23:53 +10:00
systick.c
systick.h
timer.c stm32: Add initial support for STM32L0xx MCUs. 2019-07-05 17:24:59 +10:00
timer.h
uart.c stm32: Add initial support for STM32L0xx MCUs. 2019-07-05 17:24:59 +10:00
uart.h stm32: Update components to work with new H7xx HAL. 2019-07-03 23:40:49 +10:00
usb.c stm32/usb: Add "port" keyword argument to pyb.usb_mode, to select FS/HS. 2019-07-03 11:58:56 +10:00
usb.h stm32/usb: Add support to auto-detect USB interface, either FS or HS. 2019-07-03 11:51:13 +10:00
usbd_cdc_interface.c stm32/usb: Refactor CDC VCP code to enable N CDC interfaces. 2019-05-30 21:11:04 +10:00
usbd_cdc_interface.h
usbd_conf.c stm32/usb: Support up to 3 VCP interfaces on USB device peripheral. 2019-05-31 11:35:42 +10:00
usbd_conf.h stm32/usb: Support up to 3 VCP interfaces on USB device peripheral. 2019-05-31 11:35:42 +10:00
usbd_desc.c stm32/usb: Include py/mpconfig.h instead of mpconfigboard.h. 2019-05-31 21:39:34 +10:00
usbd_desc.h
usbd_hid_interface.c
usbd_hid_interface.h
usbd_msc_interface.c stm32/usbd_msc: Allow to compile when USB enabled and SD card disabled. 2019-06-11 21:01:14 +10:00
usbd_msc_interface.h stm32/usb: Add "msc" kw-arg to pyb.usb_mode to select MSC logical units. 2019-06-11 16:22:09 +10:00
usrsw.c
usrsw.h
wdt.c
wdt.h

README.md

MicroPython port to STM32 MCUs

This directory contains the port of MicroPython to ST's line of STM32 microcontrollers. Supported MCU series are: STM32F0, STM32F4, STM32F7 and STM32L4. Parts of the code here utilise the STM32Cube HAL library.

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.

The STM32H7 series has preliminary support: there is a working REPL via USB and UART, as well as very basic peripheral support, but some things do not work and none of the advanced features of the STM32H7 are yet supported, such as the clock tree. At this point the STM32H7 should be considered as a fast version of the STM32F7.

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