micropython/ports/stm32
Damien George 56f275c0a2 stm32/Makefile: Include copysign.c in double precision float builds.
This is required for DEBUG=1 builds when MICROPY_FLOAT_IMPL=double.

Thanks to Andrew Leech.
2018-09-20 16:51:20 +10:00
..
boards stm32/boards/STM32F769DISC: Add optional support for external SDRAM. 2018-09-20 11:42:03 +10:00
lwip_inc stm32: Integrate lwIP as implementation of usocket module. 2018-05-21 17:36:06 +10:00
mboot stm32: Add support for STM32F765xx MCUs. 2018-09-20 15:16:03 +10:00
modules stm32: Add support for DHT11/DHT22 sensors. 2018-01-31 18:12:53 +11:00
usbdev stm32/usb: Guard USB device code with #if for whether USB is enabled. 2018-05-28 21:45:46 +10:00
usbhost stm32: Remove unneeded HTML release notes from usbdev and usbhost dirs. 2018-05-24 11:28:54 +10:00
.gitignore ports: Make new ports/ sub-directory and move all ports there. 2017-09-06 13:40:51 +10:00
Makefile stm32/Makefile: Include copysign.c in double precision float builds. 2018-09-20 16:51:20 +10:00
README.md stm32/README: Update to include STM32F0 in list of supported MCUs. 2018-05-28 22:04:08 +10:00
accel.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
accel.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
adc.c stm32: Add support for STM32F765xx MCUs. 2018-09-20 15:16:03 +10:00
adc.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
autoflash ports: Make new ports/ sub-directory and move all ports there. 2017-09-06 13:40:51 +10:00
bufhelper.c ports: Make new ports/ sub-directory and move all ports there. 2017-09-06 13:40:51 +10:00
bufhelper.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
can.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
can.h stm32/can: Add CAN.info() method to retrieve error and tx/rx buf info. 2018-03-16 18:28:35 +11:00
dac.c stm32/dma: Pass DMA direction as parameter to dma_init not in cfg struct 2018-09-11 17:18:06 +10:00
dac.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
dma.c stm32/dma: Get DMA working on F0 MCUs. 2018-09-16 23:16:10 +10:00
dma.h stm32/sdcard: Use only a single DMA stream for both SDIO TX/RX. 2018-09-11 17:21:22 +10:00
extint.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
extint.h stm32/extint.h: Use correct EXTI lines for RTC interrupts. 2018-08-01 17:13:49 +10:00
fatfs_port.c stm32/fatfs_port: Fix bug when MICROPY_HW_ENABLE_RTC not enabled. 2018-07-14 17:17:46 +10:00
flash.c stm32/flash: Increase H7 flash size to full 2MiB. 2018-05-30 09:54:51 +10:00
flash.h stm32/flash: Remove unused src parameter from flash_erase(). 2018-05-02 13:11:56 +10:00
flashbdev.c stm32: Add support for STM32F765xx MCUs. 2018-09-20 15:16:03 +10:00
font_petme128_8x8.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
gccollect.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
gccollect.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
gchelper.s ports: Make new ports/ sub-directory and move all ports there. 2017-09-06 13:40:51 +10:00
gchelper_m0.s stm32: Add support for Cortex-M0 CPUs. 2018-05-28 21:46:20 +10:00
help.c py/builtinhelp: Change signature of help text var from pointer to array. 2017-09-12 16:03:52 +10:00
i2c.c stm32/i2c: Fix num_acks calculation in i2c_write for F0 and F7 MCU's. 2018-06-15 14:10:53 +10:00
i2c.h stm32/i2c: Add low-level I2C driver for F7 MCUs. 2018-04-24 23:48:04 +10:00
i2cslave.c stm32/i2cslave: Fix ordering of event callbacks in slave IRQ handler. 2018-06-15 14:15:31 +10:00
i2cslave.h stm32: Add low-level hardware I2C slave driver. 2018-05-24 23:11:13 +10:00
irq.c all: Remove inclusion of internal py header files. 2017-10-04 12:37:50 +11:00
irq.h stm32: Change flash IRQ priority from 2 to 6 to prevent preemption. 2018-09-12 15:46:04 +10:00
lcd.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
lcd.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
led.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
led.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
machine_i2c.c stm32: Add support for STM32F0 MCUs. 2018-05-28 21:49:49 +10:00
machine_spi.c stm32/spi: Split out pyb.SPI and machine.SPI bindings to their own files 2018-08-14 17:11:07 +10:00
main.c stm32/sdram: Integrate SDRAM driver into rest of code. 2018-07-23 23:14:23 +10:00
make-stmconst.py stm32: Introduce MICROPY_PY_STM config to include or not the stm module. 2018-04-24 12:01:49 +10:00
modmachine.c stm32: For MCUs that have PLLSAI allow to set SYSCLK at 2MHz increments. 2018-09-11 16:42:57 +10:00
modmachine.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
modnetwork.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
modnetwork.h stm32: Add network driver for Wiznet5k using MACRAW mode and lwIP. 2018-06-01 14:21:38 +10:00
modnwcc3k.c stm32: Consolidate include of genhdr/pins.h to single location in pin.h. 2018-03-27 20:25:24 +11:00
modnwwiznet5k.c stm32: Add network driver for Wiznet5k using MACRAW mode and lwIP. 2018-06-01 14:21:38 +10:00
modpyb.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
modstm.c stm32: Introduce MICROPY_PY_STM config to include or not the stm module. 2018-04-24 12:01:49 +10:00
moduos.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
modusocket.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
modutime.c stm32: Update HAL macro and constant names to use newer versions. 2018-02-13 15:37:35 +11:00
mpconfigboard_common.h stm32: Add support for STM32F0 MCUs. 2018-05-28 21:49:49 +10:00
mpconfigport.h ports: Enable ure.sub() on stm32, esp8266 (not 512k) and esp32. 2018-07-02 15:13:18 +10:00
mpconfigport.mk stm32/modnwwiznet5k: Add support for W5500 Ethernet chip. 2017-10-16 15:36:57 +11:00
mphalport.c stm32/mphalport: Make mp_hal_stdin_rx_chr/stdout_tx_strn weakly linked. 2018-07-18 10:41:55 +10:00
mphalport.h stm32: Add support for Cortex-M0 CPUs. 2018-05-28 21:46:20 +10:00
mpthreadport.c all: Remove inclusion of internal py header files. 2017-10-04 12:37:50 +11:00
mpthreadport.h ports: Make new ports/ sub-directory and move all ports there. 2017-09-06 13:40:51 +10:00
network_wiznet5k.c stm32: Add network driver for Wiznet5k using MACRAW mode and lwIP. 2018-06-01 14:21:38 +10:00
pendsv.c stm32/irq: Define IRQ priorities directly as encoded hardware values. 2018-05-02 14:41:02 +10:00
pendsv.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
pin.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
pin.h stm32/pin: In pin AF object, remove union of periph ptr types. 2018-04-11 16:14:58 +10:00
pin_defs_stm32.c all: Update Makefiles and others to build with new ports/ dir layout. 2017-09-06 14:09:13 +10:00
pin_defs_stm32.h stm32: Add method for statically configuring pin alternate function. 2018-07-20 14:03:21 +10:00
pin_named_pins.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
pin_static_af.h stm32: Add method for statically configuring pin alternate function. 2018-07-20 14:03:21 +10:00
portmodules.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
pyb_i2c.c stm32: Add support for STM32F765xx MCUs. 2018-09-20 15:16:03 +10:00
pyb_spi.c stm32/spi: Split out pyb.SPI and machine.SPI bindings to their own files 2018-08-14 17:11:07 +10:00
pybcdc.inf_template ports: Make new ports/ sub-directory and move all ports there. 2017-09-06 13:40:51 +10:00
pybthread.c ports: Make new ports/ sub-directory and move all ports there. 2017-09-06 13:40:51 +10:00
pybthread.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
qspi.c stm32/qspi: Don't require data reads and writes to be a multiple of 4. 2018-06-22 15:07:01 +10:00
qspi.h stm32/qspi: Add hardware QSPI driver, with memory-map capability. 2018-03-03 00:17:08 +11:00
qstrdefsport.h ports: Make new ports/ sub-directory and move all ports there. 2017-09-06 13:40:51 +10:00
resethandler.s stm32/main: Rename main to stm32_main and pass through first argument. 2018-03-29 16:15:57 +11:00
resethandler_m0.s stm32: Add support for Cortex-M0 CPUs. 2018-05-28 21:46:20 +10:00
rng.c stm32/rng: Use Yasmarang for rng_get() if MCU doesn't have HW RNG. 2018-05-22 10:36:03 +10:00
rng.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
rtc.c stm32/rtc: Get rtc.wakeup working on F0 MCUs. 2018-07-31 17:24:10 +10:00
rtc.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
sdcard.c stm32/sdcard: Fully reset SDMMC periph before calling HAL DMA functions. 2018-09-12 17:02:17 +10:00
sdcard.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
sdram.c stm32/sdram: Add support for 32-bit wide data bus and 256MB in MPU cfg. 2018-09-20 11:29:37 +10:00
sdram.h stm32/sdram: Integrate SDRAM driver into rest of code. 2018-07-23 23:14:23 +10:00
servo.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
servo.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
spi.c stm32/spi: Be sure to set all SPI config values in SPI proto init. 2018-09-11 17:36:11 +10:00
spi.h stm32/spi: Add implementation of low-level SPI protocol. 2018-08-14 22:10:43 +10:00
spibdev.c stm32: Change flash IRQ priority from 2 to 6 to prevent preemption. 2018-09-12 15:46:04 +10:00
stm32_it.c stm32/rtc: Get rtc.wakeup working on F0 MCUs. 2018-07-31 17:24:10 +10:00
stm32_it.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
storage.c stm32: Change flash IRQ priority from 2 to 6 to prevent preemption. 2018-09-12 15:46:04 +10:00
storage.h stm32/storage: Remove all SPI-flash bdev cfg, to be provided per board. 2018-03-10 00:59:43 +11:00
system_stm32.c stm32: For MCUs that have PLLSAI allow to set SYSCLK at 2MHz increments. 2018-09-11 16:42:57 +10:00
system_stm32f0.c stm32: Add support for STM32F0 MCUs. 2018-05-28 21:49:49 +10:00
systick.c ports: Make new ports/ sub-directory and move all ports there. 2017-09-06 13:40:51 +10:00
systick.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
timer.c stm32/timer: Add tick_hz arg to Timer constructor and init method. 2018-07-17 13:36:36 +10:00
timer.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
uart.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
uart.h stm32/uart: Allow ctrl-C to work with UARTs put on REPL via os.dupterm. 2018-04-23 20:44:30 +10:00
usb.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
usb.h stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
usbd_cdc_interface.c stm32/usb: Guard USB device code with #if for whether USB is enabled. 2018-05-28 21:45:46 +10:00
usbd_cdc_interface.h stm32/usb: Add ability to have 2x VCP interfaces on the one USB device. 2018-05-14 23:44:45 +10:00
usbd_conf.c stm32/usb: Guard USB device code with #if for whether USB is enabled. 2018-05-28 21:45:46 +10:00
usbd_conf.h stm32/usb: Add ability to have 2x VCP interfaces on the one USB device. 2018-05-14 23:44:45 +10:00
usbd_desc.c stm32/usbdev: Combine all str descriptor accessor funcs into one func. 2018-02-01 12:46:37 +11:00
usbd_desc.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
usbd_hid_interface.c stm32/usb: Change HID report funcs to take HID state, not usbdev state. 2018-05-14 17:04:43 +10:00
usbd_hid_interface.h stm32/usb: Combine HID lower-layer and interface state into one struct. 2018-05-14 16:34:31 +10:00
usbd_msc_storage.c stm32/usbdev: Reduce dependency on py header files. 2018-02-01 12:44:16 +11:00
usbd_msc_storage.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
usrsw.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
usrsw.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
wdt.c stm32: Support compiling with object representation D. 2018-07-08 23:25:11 +10:00
wdt.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00

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