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Dan Halbert 7c219600a2
WIP: after merge; before testing
5 years ago
..
boards stm32/boards: Add .ld and af.csv files for STM32F722. 5 years ago
lwip_inc stm32: Integrate lwIP as implementation of usocket module. 5 years ago
mboot stm32/mboot: Add support for erase/read/write of external SPI flash. 5 years ago
modules stm32: Add support for DHT11/DHT22 sensors. 5 years ago
usbdev stm32/usb: Guard USB device code with #if for whether USB is enabled. 5 years ago
usbhost stm32: Remove unneeded HTML release notes from usbdev and usbhost dirs. 5 years ago
.gitignore ports: Make new ports/ sub-directory and move all ports there. 6 years ago
Makefile WIP: after merge; before testing 5 years ago
README.md stm32/README: Update to include STM32F0 in list of supported MCUs. 5 years ago
accel.c stm32/accel: Switch pyb.Accel to use new C-level I2C API. 5 years ago
accel.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
adc.c stm32: Add support for STM32F0 MCUs. 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. 6 years ago
bufhelper.c ports: Make new ports/ sub-directory and move all ports there. 6 years ago
bufhelper.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
can.c stm32/can: Use MP_OBJ_ARRAY_TYPECODE_FLAG_RW where appropriate. 5 years ago
can.h stm32/can: Add CAN.info() method to retrieve error and tx/rx buf info. 5 years ago
dac.c stm32: Add support for STM32F0 MCUs. 5 years ago
dac.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
dma.c stm32: Add support for STM32F0 MCUs. 5 years ago
dma.h stm32: Add support for STM32F0 MCUs. 5 years ago
extint.c stm32: Add support for STM32F0 MCUs. 5 years ago
extint.h stm32: Use STM32xx macros instead of MCU_SERIES_xx to select MCU type. 5 years ago
fatfs_port.c stm32: Update HAL macro and constant names to use newer versions. 5 years ago
flash.c stm32/flash: Increase H7 flash size to full 2MiB. 5 years ago
flash.h stm32/flash: Remove unused src parameter from flash_erase(). 5 years ago
flashbdev.c stm32: Add support for STM32L496 MCU. 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. 6 years ago
gchelper_m0.s stm32: Add support for Cortex-M0 CPUs. 5 years ago
help.c py/builtinhelp: Change signature of help text var from pointer to array. 5 years ago
i2c.c stm32/i2c: Fix num_acks calculation in i2c_write for F0 and F7 MCU's. 5 years ago
i2c.h stm32/i2c: Add low-level I2C driver for F7 MCUs. 5 years ago
i2cslave.c stm32/i2cslave: Fix ordering of event callbacks in slave IRQ handler. 5 years ago
i2cslave.h stm32: Add low-level hardware I2C slave driver. 5 years ago
irq.c all: Remove inclusion of internal py header files. 5 years ago
irq.h stm32: Add support for Cortex-M0 CPUs. 5 years ago
lcd.c stm32: Change pin_X and pyb_pin_X identifiers to be pointers to objects. 5 years ago
lcd.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
led.c stm32: Don't use %lu or %lx for formatting, use just %u or %x. 5 years ago
led.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
machine_i2c.c stm32: Add support for STM32F0 MCUs. 5 years ago
main.c ports: Call gc_sweep_all() when doing a soft reset. 5 years ago
make-stmconst.py stm32: Introduce MICROPY_PY_STM config to include or not the stm module. 5 years ago
modmachine.c stm32: Add support for STM32F0 MCUs. 5 years ago
modmachine.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
modnetwork.c stm32/modnetwork: Fix arg indexing in generic ifconfig method. 5 years ago
modnetwork.h stm32: Add network driver for Wiznet5k using MACRAW mode and lwIP. 5 years ago
modnwcc3k.c stm32: Consolidate include of genhdr/pins.h to single location in pin.h. 5 years ago
modnwwiznet5k.c stm32: Add network driver for Wiznet5k using MACRAW mode and lwIP. 5 years ago
modpyb.c stm32/modpyb: Remove unused includes and clean up comments. 5 years ago
modstm.c stm32: Introduce MICROPY_PY_STM config to include or not the stm module. 5 years ago
moduos.c stm32: Allow a board to disable MICROPY_VFS_FAT. 5 years ago
modusocket.c stm32: Integrate lwIP as implementation of usocket module. 5 years ago
modutime.c stm32: Update HAL macro and constant names to use newer versions. 5 years ago
mpconfigboard_common.h stm32: Add support for STM32F0 MCUs. 5 years ago
mpconfigport.h ports: Enable IOBase on unix, stm32, esp8266 and esp32. 5 years ago
mpconfigport.mk stm32/modnwwiznet5k: Add support for W5500 Ethernet chip. 5 years ago
mphalport.c stm32: Add support for STM32F0 MCUs. 5 years ago
mphalport.h stm32: Add support for Cortex-M0 CPUs. 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. 6 years ago
network_wiznet5k.c stm32: Add network driver for Wiznet5k using MACRAW mode and lwIP. 5 years ago
pendsv.c stm32/irq: Define IRQ priorities directly as encoded hardware values. 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/pin: In pin AF object, remove union of periph ptr types. 5 years ago
pin_defs_stm32.c all: Update Makefiles and others to build with new ports/ dir layout. 6 years ago
pin_defs_stm32.h stm32/can: Allow CAN pins to be configured per board. 5 years ago
pin_named_pins.c ports: Make new ports/ sub-directory and move all ports there. 6 years ago
portmodules.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
pyb_i2c.c stm32/pyb_i2c: Put pyb.I2C under MICROPY_PY_PYB_LEGACY setting. 5 years ago
pybcdc.inf_template ports: Make new ports/ sub-directory and move all ports there. 6 years ago
pybthread.c ports: Make new ports/ sub-directory and move all ports there. 6 years ago
pybthread.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
qspi.c stm32/qspi: Don't require data reads and writes to be a multiple of 4. 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. 6 years ago
resethandler.s stm32/main: Rename main to stm32_main and pass through first argument. 5 years ago
resethandler_m0.s stm32: Add support for Cortex-M0 CPUs. 5 years ago
rng.c stm32/rng: Use Yasmarang for rng_get() if MCU doesn't have HW RNG. 5 years ago
rng.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
rtc.c stm32: Add support for STM32F0 MCUs. 5 years ago
rtc.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
sdcard.c stm32/irq: Define IRQ priorities directly as encoded hardware values. 5 years ago
sdcard.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
servo.c stm32: Don't use %lu or %lx for formatting, use just %u or %x. 5 years ago
servo.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
spi.c stm32/spi: Fix SPI driver so it can send/recv more than 65535 bytes. 5 years ago
spi.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
spibdev.c drivers/memory/spiflash: Rename functions to indicate they use cache. 5 years ago
stm32_it.c stm32/timer: Support TIM1 on F0 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: Allow to have no storage support if there are no block devices. 5 years ago
storage.h stm32/storage: Remove all SPI-flash bdev cfg, to be provided per board. 5 years ago
system_stm32.c stm32: Add support for STM32L496 MCU. 5 years ago
system_stm32f0.c stm32: Add support for STM32F0 MCUs. 5 years ago
systick.c ports: Make new ports/ sub-directory and move all ports there. 6 years ago
systick.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
timer.c stm32/timer: Support TIM1 on F0 MCUs. 5 years ago
timer.h stm32: Change header include guards from STMHAL to STM32 to match dir. 5 years ago
uart.c WIP: after merge; before testing 5 years ago
uart.h stm32/uart: Allow ctrl-C to work with UARTs put on REPL via os.dupterm. 5 years ago
usb.c WIP: after merge; before testing 5 years ago
usb.h stm32/usb: Add ability to have 2x VCP interfaces on the one USB device. 5 years ago
usbd_cdc_interface.c stm32/usb: Guard USB device code with #if for whether USB is enabled. 5 years ago
usbd_cdc_interface.h stm32/usb: Add ability to have 2x VCP interfaces on the one USB device. 5 years ago
usbd_conf.c stm32/usb: Guard USB device code with #if for whether USB is enabled. 5 years ago
usbd_conf.h stm32/usb: Add ability to have 2x VCP interfaces on the one USB device. 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/usb: Change HID report funcs to take HID state, not usbdev state. 5 years ago
usbd_hid_interface.h stm32/usb: Combine HID lower-layer and interface state into one struct. 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 stm32: Change pin_X and pyb_pin_X identifiers to be pointers to objects. 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 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