micropython/ports/stm32
Damien George 2c8c2b935e stm32/powerctrl: Improve support for changing system freq on H7 MCUs.
This commit improves pllvalues.py to generate PLL values for H7 MCUs that
are valid (VCO in and out are in range) and extend for the entire range of
SYSCLK values up to 400MHz (up to 480MHz is currently unsupported).
2020-01-31 23:25:18 +11:00
..
boards stm32/powerctrl: Improve support for changing system freq on H7 MCUs. 2020-01-31 23:25:18 +11:00
lwip_inc stm32/lwip_inc: Enable LWIP_NETIF_EXT_STATUS_CALLBACK for mDNS. 2019-09-12 18:08:50 +10:00
mbedtls stm32/mbedtls: Resize mbedtls output buffer from 16 down to 4 kiB. 2019-12-21 00:02:24 +11:00
mboot ports: Modify mp_hal_pin_write macro so it can be used as a function. 2020-01-14 23:48:42 +11:00
usbdev stm32/usbdev: Fix compile error if MICROPY_HW_USB_CDC_NUM is set to 2. 2019-10-05 23:33:38 +10:00
usbhost stm32: Remove unneeded HTML release notes from usbdev and usbhost dirs. 2018-05-24 11:28:54 +10:00
Makefile stm32/powerctrl: Improve support for changing system freq on H7 MCUs. 2020-01-31 23:25:18 +11:00
README.md ports: Add new make target "submodules" which inits required modules. 2019-10-15 17:14:41 +11:00
accel.c stm32/accel: Fix Accel.read() method so it does read a byte. 2019-10-18 11:53:34 +11:00
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/adc: Fix sampling for internal channels on H7 MCUs. 2019-10-15 22:08:45 +11:00
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: Convert legacy uppercase macro names to lowercase. 2019-02-12 14:54:51 +11:00
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: Add support for FDCAN peripheral, exposed as pyb.CAN. 2019-09-23 17:00:54 +10:00
can.h stm32/can: Guard header file by MICROPY_HW_ENABLE_CAN. 2019-09-23 23:45:07 +10:00
dac.c py: Introduce MP_ROM_NONE macro for ROM to refer to None object. 2019-12-27 22:51:17 +11:00
dac.h stm32/dac: Rework DAC driver to use direct register access. 2019-04-24 15:51:19 +10:00
dma.c stm32/dma: Fix DMA config for L0 MCUs. 2019-09-03 23:33:09 +10:00
dma.h stm32: Add initial support for STM32WBxx MCUs. 2019-07-17 16:33:31 +10:00
eth.c stm32/mpu: Save and restore the IRQ state when configuring MPU. 2019-10-16 23:12:06 +11:00
eth.h stm32/eth: Add low-level Ethernet MAC driver. 2019-02-26 23:32:19 +11:00
extint.c stm32: Use mp_printf with MICROPY_ERROR_PRINTER for uncaught exceptions. 2019-09-23 17:15:07 +10:00
extint.h stm32: Add initial support for STM32WBxx MCUs. 2019-07-17 16:33:31 +10:00
factoryreset.c stm32: Generalise flash mounting code so it supports arbitrary FS. 2019-11-25 18:10:58 +11:00
factoryreset.h stm32: Generalise flash mounting code so it supports arbitrary FS. 2019-11-25 18:10:58 +11:00
fatfs_port.c stm32/fatfs_port: Fix bug when MICROPY_HW_ENABLE_RTC not enabled. 2018-07-14 17:17:46 +10:00
fdcan.c stm32: Add support for FDCAN peripheral, exposed as pyb.CAN. 2019-09-23 17:00:54 +10:00
flash.c stm32/flashbdev: Support internal filesystem on STM32F722/23/32/33. 2019-07-25 16:31:12 +10:00
flash.h stm32/flash: Remove unused src parameter from flash_erase(). 2018-05-02 13:11:56 +10:00
flashbdev.c stm32/storage: Make pyb.Flash configurable, and support ext block proto. 2019-11-26 00:07:09 +11:00
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/gccollect: Always use MP_STATE_THREAD(stack_top) to get stack top. 2019-07-11 17:32:01 +10:00
gccollect.h stm32: In link script, define start of stack separately from heap end. 2019-06-14 15:29:24 +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 generation of restart condition for hw I2C on F0/F7. 2019-08-16 13:34:04 +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/powerctrlboot: Fix config of systick IRQ priority on F0/L0/WB MCU. 2019-10-21 12:23:41 +11:00
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_adc.c stm32/{adc,machine_adc}: Change ADC clock and sampling time for F0 MCUs. 2019-10-04 21:39:17 +10:00
machine_i2c.c stm32: Fix to build in nanbox mode. 2019-12-27 22:54:53 +11:00
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
machine_timer.c stm32/softtimer: Change linear linked list to a pairing heap. 2020-01-22 17:31:18 +11:00
machine_uart.c py: Introduce MP_ROM_NONE macro for ROM to refer to None object. 2019-12-27 22:51:17 +11:00
main.c stm32/main: Fix SKIPSD file detection so SD card is mounted by default. 2019-12-09 17:01:30 +11:00
make-stmconst.py stm32/make-stmconst.py: Allow more variation in parens and int-suffix L. 2019-07-17 16:27:17 +10:00
modmachine.c stm32/powerctrl: Improve support for changing system freq on H7 MCUs. 2020-01-31 23:25:18 +11:00
modmachine.h stm32: Add machine.Timer with soft timer implementation. 2019-10-31 22:12:55 +11:00
modnetwork.c all: Convert nlr_raise(mp_obj_new_exception_msg(x)) to mp_raise_msg(x). 2019-11-05 11:35:45 +11:00
modnetwork.h stm32/modnetwork: Replace generic netif NIC polling with specific code. 2019-06-03 17:14:34 +10:00
modnwcc3k.c all: Convert nlr_raise(mp_obj_new_exception_msg(x)) to mp_raise_msg(x). 2019-11-05 11:35:45 +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 lib/utils/pyexec: Introduce MICROPY_REPL_INFO, wrap debug prints in it. 2019-12-28 00:05:39 +11:00
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 py: Make mp_obj_get_type() return a const ptr to mp_obj_type_t. 2020-01-09 11:25:26 +11:00
modusocket.c stm32/modusocket: Handle case of NULL NIC in socket ioctl. 2019-12-13 14:45:21 +11:00
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/uart: Add support for UART4/5 on L0 MCUs. 2019-12-05 15:31:41 +11:00
mpconfigport.h stm32/softtimer: Change linear linked list to a pairing heap. 2020-01-22 17:31:18 +11:00
mpconfigport.mk extmod: Consolidate FAT FS config to MICROPY_VFS_FAT across all ports. 2019-11-11 11:37:38 +11:00
mpconfigport_nanbox.h stm32: Add configuration to build in nanbox mode. 2019-12-27 22:54:53 +11:00
mphalport.c stm32: Fix to build in nanbox mode. 2019-12-27 22:54:53 +11:00
mphalport.h ports: Modify mp_hal_pin_write macro so it can be used as a function. 2020-01-14 23:48:42 +11:00
mpthreadport.c stm32/mpthreadport: Include runtime.h to get defn of mp_raise_msg. 2019-11-05 13:20:25 +11:00
mpthreadport.h py/mpthread.h: Use strong type for mp_thread_set_state() argument. 2020-01-29 17:10:32 +11:00
mpu.h stm32/mpu: Save and restore the IRQ state when configuring MPU. 2019-10-16 23:12:06 +11:00
network_lan.c stm32: Use global lwip build config and support building without lwip. 2019-03-04 23:33:02 +11:00
network_wiznet5k.c stm32/modnetwork: Replace generic netif NIC polling with specific code. 2019-06-03 17:14:34 +10:00
nimble.c stm32: Extract port-specific Nimble implementation. 2019-10-08 14:40:35 +11:00
nimble_hci_uart.c stm32: Fix to build in nanbox mode. 2019-12-27 22:54:53 +11:00
pendsv.c stm32/pendsv: Fix inline asm constant and prefix with # character. 2019-02-12 14:50:27 +11:00
pendsv.h stm32: Add soft timer implementation, using SysTick at 1ms resolution. 2019-10-31 22:12:55 +11:00
pin.c py: Introduce MP_ROM_NONE macro for ROM to refer to None object. 2019-12-27 22:51:17 +11:00
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 support for FDCAN peripheral, exposed as pyb.CAN. 2019-09-23 17:00:54 +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/sdram: Increase GPIO speed for SDRAM interface to "very high". 2019-02-20 16:54:32 +11:00
portmodules.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
powerctrl.c stm32/powerctrl: Improve support for changing system freq on H7 MCUs. 2020-01-31 23:25:18 +11:00
powerctrl.h stm32/powerctrl: Move L0's SystemClock_Config to powerctrlboot.c file. 2019-07-08 15:23:53 +10:00
powerctrlboot.c stm32/powerctrlboot: Fix config of systick IRQ priority on F0/L0/WB MCU. 2019-10-21 12:23:41 +11:00
pyb_can.c stm32: Fix to build in nanbox mode. 2019-12-27 22:54:53 +11:00
pyb_i2c.c stm32: Fix to build in nanbox mode. 2019-12-27 22:54:53 +11:00
pyb_spi.c py: Introduce MP_ROM_NONE macro for ROM to refer to None object. 2019-12-27 22:51:17 +11:00
pybcdc.inf_template ports: Make new ports/ sub-directory and move all ports there. 2017-09-06 13:40:51 +10:00
pybthread.c stm32: In link script, define start of stack separately from heap end. 2019-06-14 15:29:24 +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 drivers, stm32: Support SPI/QSPI flash chips over 16MB. 2020-01-30 13:18:38 +11:00
qspi.h stm32/qspi: Add hardware QSPI driver, with memory-map capability. 2018-03-03 00:17:08 +11:00
qstrdefsport.h stm32/qstrdefsport.h: Remove unused qstrs and make USB ones conditional. 2019-11-27 21:59:47 +11:00
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
rfcore.c stm32: Add support for RF coprocessor on WB55 MCUs. 2019-11-01 14:52:17 +11:00
rfcore.h stm32: Add support for RF coprocessor on WB55 MCUs. 2019-11-01 14:52:17 +11:00
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: Add initial support for STM32WBxx MCUs. 2019-07-17 16:33:31 +10:00
rtc.h stm32: Implement machine.lightsleep(). 2019-01-27 11:13:32 +11:00
sdcard.c extmod/vfs: Rename BP_IOCTL_xxx constants to MP_BLOCKDEV_IOCTL_xxx. 2019-10-29 14:17:29 +11:00
sdcard.h stm32: Add support for MMC driver, exposed via pyb.MMCard class. 2019-04-01 17:04:43 +11:00
sdio.c stm32/sdio: Add support for H7 MCUs. 2020-01-31 23:25:18 +11:00
sdio.h stm32: Add low-level SDIO interface for cyw43 driver. 2019-06-03 16:53:46 +10:00
sdram.c stm32/sdram: Fix to use new mpu_config_start/mpu_config_end signature. 2019-10-22 22:02:06 +11:00
sdram.h stm32/sdram: Integrate SDRAM driver into rest of code. 2018-07-23 23:14:23 +10:00
servo.c stm32/servo: Only initialise TIM5 if it is needed, to save power. 2018-11-28 12:06:24 +11:00
servo.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
softtimer.c stm32/softtimer: Change linear linked list to a pairing heap. 2020-01-22 17:31:18 +11:00
softtimer.h stm32/softtimer: Change linear linked list to a pairing heap. 2020-01-22 17:31:18 +11:00
spi.c stm32/spi: Factor out code to calculate SPI source frequency. 2019-07-03 12:02:46 +10:00
spi.h stm32/spi: Add implementation of low-level SPI protocol. 2018-08-14 22:10:43 +10:00
spibdev.c stm32/storage: Make pyb.Flash configurable, and support ext block proto. 2019-11-26 00:07:09 +11:00
stm32_it.c stm32/stm32_it: Don't call __HAL_USB_HS_EXTI_CLEAR_FLAG on H7 MCUs. 2020-01-31 23:25:18 +11:00
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: Fix to build in nanbox mode. 2019-12-27 22:54:53 +11:00
storage.h stm32/storage: Change storage_read/write_blocks to return int type. 2019-11-26 00:08:57 +11:00
system_stm32.c stm32/system_stm32: Support selection of HSE and LSI on L4 MCUs. 2019-10-04 16:09:06 +10:00
systick.c stm32: Add soft timer implementation, using SysTick at 1ms resolution. 2019-10-31 22:12:55 +11:00
systick.h stm32: Provide port-specific implementation for Nimble on STM32. 2019-10-01 09:51:02 +10:00
timer.c py: Introduce MP_ROM_NONE macro for ROM to refer to None object. 2019-12-27 22:51:17 +11:00
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/uart: Add support for UART4/5 on L0 MCUs. 2019-12-05 15:31:41 +11:00
uart.h stm32: Update components to work with new H7xx HAL. 2019-07-03 23:40:49 +10:00
usb.c py: Make mp_obj_get_type() return a const ptr to mp_obj_type_t. 2020-01-09 11:25:26 +11:00
usb.h stm32/usb: Add support for VCP+MSC+HID mode, incl 2xVCP and 3xVCP. 2019-09-11 15:17:38 +10:00
usbd_cdc_interface.c stm32/usbd_cdc_interface: Add CTS flow control option for USB VCP. 2019-09-26 13:50:24 +10:00
usbd_cdc_interface.h stm32/usbd_cdc_interface: Add CTS flow control option for USB VCP. 2019-09-26 13:50:24 +10:00
usbd_conf.c stm32/usbd: Make USB device FIFO sizes dynamically configurable. 2019-08-15 13:56:50 +10:00
usbd_conf.h stm32/usb: Add support for VCP+MSC+HID mode, incl 2xVCP and 3xVCP. 2019-09-11 15:17:38 +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 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/usbd_hid_interface: Include extra header to build with threading. 2019-07-26 12:44:14 +10:00
usbd_hid_interface.h stm32/usbd_hid_interface: Rewrite USB HID interface code. 2019-07-25 17:42:17 +10:00
usbd_msc_interface.c extmod/vfs: Rename BP_IOCTL_xxx constants to MP_BLOCKDEV_IOCTL_xxx. 2019-10-29 14:17:29 +11:00
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 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/wdt: Make singleton WDT object const so it goes in ROM. 2019-01-11 01:51:57 +11:00
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.

First the submodules must be obtained using:

$ make submodules

Then 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