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boards stmhal: Add support for STM32 Nucleo64 L476RG. Dec 22, 2016
cmsis stmhal/cmsis: Add CMSIS file stm32f769xx.h, V1.1.2. Dec 13, 2016
hal stmhal/hal: Update HALCOMMITS due to change in f7 hal files. Dec 7, 2016
usbdev stmhal/usb: Use real packet size (not maximum) in HID receive. Oct 4, 2016
usbhost Initial checkin with STM HAL Mar 12, 2014
.gitignore stmhal: Add support for Espruino Pico board. Apr 18, 2015
Makefile stmhal: fix wrong usage of gcc -print-libgcc-file-name Jan 12, 2017
README.md stmhal: Add makefile target and configuration to deploy via OpenOCD. Mar 9, 2016
accel.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
accel.h Add license header to (almost) all files. May 3, 2014
adc.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
adc.h Add license header to (almost) all files. May 3, 2014
autoflash Add device ID to autoflash script. May 2, 2014
bufhelper.c py: Remove mp_obj_str_builder and use vstr instead. Jan 21, 2015
bufhelper.h py: Remove mp_obj_str_builder and use vstr instead. Jan 21, 2015
builtin_open.c extmod/vfs_fat_file: Reusable FatFs module, move from stmhal/file. Feb 14, 2016
can.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
can.h stmhal: Remove PYBVxx defines and use config vars for UART/CAN names. May 27, 2015
dac.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
dac.h Add license header to (almost) all files. May 3, 2014
dma.c stmhal/i2c: Add support for I2C4 hardware block on F7 MCUs. Nov 25, 2016
dma.h stmhal/i2c: Add support for I2C4 hardware block on F7 MCUs. Nov 25, 2016
extint.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
extint.h stamhal: Add definitions for MCU_SERIES_F4 and MCU_SERIES_F7 Aug 7, 2015
fatfs_port.c extmod/fsusermount: Support mounting of multiple block devices. Feb 10, 2016
flash.c stmhal: L4: Modify flash.c and storage.c to support L4 MCU. Apr 21, 2016
flash.h Add license header to (almost) all files. May 3, 2014
font_petme128_8x8.h extmod: Add initial framebuf module. Apr 12, 2016
gccollect.c stmhal: Collect all root pointers together in 1 place. Jan 7, 2015
gccollect.h stmhal: Remove some unnecessary declarations, purely for cleanup. Mar 20, 2015
gchelper.s REPl working on UART6 with STMHAL Mar 13, 2014
help.c cc3200, stmhal, teensy: Use pyhelp_print_obj function. Apr 25, 2016
i2c.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
i2c.h stmhal/i2c: Expose the pyb_i2c_obj_t struct and some relevant functions. Nov 25, 2016
import.c extmod/vfs_fat: Add fat_vfs_import_stat(), reusable import stat routine. Feb 28, 2016
input.c stmhal: Make pybstdio usable by other ports, and use it. Feb 13, 2015
irq.c stmhal: Add pyb.irq_stats() to get statistics about IRQ calls. Dec 22, 2015
irq.h py: Be more specific with MP_DECLARE_CONST_FUN_OBJ macros. Oct 21, 2016
lcd.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
lcd.h stmhal: Update and improve LCD driver. Jun 14, 2014
led.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
led.h Add license header to (almost) all files. May 3, 2014
machine_i2c.c stmhal/machine_i2c: Provide HW implementation of I2C peripherals for F4. Nov 25, 2016
main.c stmhal: Use core-provided keyboard exception object. Dec 15, 2016
make-stmconst.py stmhal: Add back GPIO_BSRRL and GPIO_BSRRH constants to stm module. Nov 28, 2016
memory.h stmhal: Enable uhashlib module; add heapq, hashlib weak links. Nov 27, 2014
modmachine.c stmhal: Implement machine.soft_reset(). Oct 17, 2016
modmachine.h py: Be more specific with MP_DECLARE_CONST_FUN_OBJ macros. Oct 21, 2016
modnetwork.c stmhal: Disable network and usocket for ESPRUINO_PICO Oct 6, 2016
modnetwork.h lib: Move some common mod_network_* functions to lib/netutils. May 4, 2015
modnwcc3k.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
modnwwiznet5k.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
modpyb.c py: Be more specific with MP_DECLARE_CONST_FUN_OBJ macros. Oct 21, 2016
modstm.c all: Remove 'name' member from mp_obj_module_t struct. Sep 21, 2016
moduos.c stmhal/moduos: Implement POSIX behaviour of rename, allow to overwrite. Dec 2, 2016
modusocket.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
modutime.c stmhal/modutime: Consistently convert to MP_ROM_QSTR/MP_ROM_PTR. Oct 29, 2016
mpconfigport.h stmhal, esp8266: Enable utimeq module. Dec 23, 2016
mpconfigport.mk stmhal: Initial implementation of cc3k module and driver. Sep 25, 2014
mphalport.c stmhal: Support PortG on STM32L476 and STM32L486. Jan 12, 2017
mphalport.h stmhal/mphalport.h: Explicitly use HAL's GPIO constants for pull modes. Dec 22, 2016
pendsv.c stmhal: Rename mp_const_vcp_interrupt to mp_kbd_exception. Dec 15, 2016
pendsv.h stmhal: Remove some unnecessary declarations, purely for cleanup. Mar 20, 2015
pin.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
pin.h py: Be more specific with MP_DECLARE_CONST_FUN_OBJ macros. Oct 21, 2016
pin_defs_stmhal.c all: Add py/mphal.h and use it in all ports. Oct 31, 2015
pin_defs_stmhal.h stmhal: Add STM32F7DISC and associated changes. Jul 29, 2015
pin_named_pins.c all: Add py/mphal.h and use it in all ports. Oct 31, 2015
portmodules.h stmhal/moduselect: Move to extmod/ for reuse by other ports. Nov 20, 2016
pybcdc.inf_template Rename "Micro Python" to "MicroPython" in REPL, help, readme's and misc. Oct 11, 2015
pybstdio.c all: Remove readall() method, which is equivalent to read() w/o args. Nov 13, 2016
qstrdefsport.h py: Add rules for automated extraction of qstrs from sources. Apr 16, 2016
rng.c stmhal: Replace #include "stm32f4xx_hal.h" with #include STM32_HAL_H. Jul 29, 2015
rng.h py: Be more specific with MP_DECLARE_CONST_FUN_OBJ macros. Oct 21, 2016
rtc.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
rtc.h stmhal: Add rtc.init() method to force RTC to re-initialise. Dec 4, 2015
sdcard.c stmhal/sdcard: Use mp_hal_pin_config function instead of HAL_GPIO_Init. Dec 22, 2016
sdcard.h extmod/fsusermount: Support mounting of multiple block devices. Feb 10, 2016
servo.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
servo.h py: Be more specific with MP_DECLARE_CONST_FUN_OBJ macros. Oct 21, 2016
spi.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
spi.h stmhal/spi: Make machine.SPI class conform to correct API. Oct 3, 2016
startup_stm32.S stmhal: L4: Adapt startup code, clock configuration and interrupts. May 5, 2016
stm32_it.c stmhal/uart: Add support for UART7 and UART8 on F7 MCUs. Dec 5, 2016
stm32_it.h stmhal: Enable two USB phys to be supported together. Dec 9, 2015
storage.c stmhal: Add STM32F769DISC board files. Dec 13, 2016
storage.h extmod/fsusermount: Support mounting of multiple block devices. Feb 10, 2016
system_stm32.c stmhal: Declare and initialise PrescTables for F7 MCUs. Dec 7, 2016
systick.c stmhal: Replace #include "stm32f4xx_hal.h" with #include STM32_HAL_H. Jul 29, 2015
systick.h stmhal: Make pyb.[u]delay use systick with IRQs, busy loop otherwise. Nov 30, 2014
timer.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
timer.h stmhal: Add PWM capability for LED(3) and LED(4) on pyboards. Jan 29, 2016
uart.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
uart.h stmhal/uart: Add support for UART7 and UART8 on F7 MCUs. Dec 5, 2016
usb.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
usb.h py: Be more specific with MP_DECLARE_CONST_FUN_OBJ macros. Oct 21, 2016
usbd_cdc_interface.c stmhal: Use core-provided keyboard exception object. Dec 15, 2016
usbd_cdc_interface.h stmhal/usb: Always use the mp_kbd_exception object for VCP interrupt. Dec 15, 2016
usbd_conf.c stmhal: L4: Modify usbd_conf.c to support L4 MCU. Apr 17, 2016
usbd_conf.h stmhal: Replace #include "stm32f4xx_hal.h" with #include STM32_HAL_H. Jul 29, 2015
usbd_desc.c all: Add py/mphal.h and use it in all ports. Oct 31, 2015
usbd_desc.h stmhal: Fix USB CDC-only mode under Windows. Oct 8, 2015
usbd_hid_interface.c stmhal/usb: Use correct ClassData structure for HID receive. Oct 4, 2016
usbd_hid_interface.h stmhal/usb: Add support to receive USB HID messages from host. Oct 4, 2016
usbd_msc_storage.c stmhal: Include fatfs headers using lib/fatfs prefix. Mar 4, 2015
usbd_msc_storage.h Add license header to (almost) all files. May 3, 2014
usrsw.c all: Consistently update signatures of .make_new and .call methods. Jan 4, 2017
usrsw.h Add license header to (almost) all files. May 3, 2014
wdt.c stmhal/wdt: Implement keyword args to WDT constructor. Sep 6, 2016
wdt.h stmhal: Add machine.WDT class. Sep 3, 2016

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

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

Flashing the Firmware with stlink

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 stmhal 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 stmhal/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