micropython/ports/stm32
David Lechner ca920f7218 py/mpstate: Make exceptions thread-local.
This moves mp_pending_exception from mp_state_vm_t to mp_state_thread_t.
This allows exceptions to be scheduled on a specific thread.

Signed-off-by: David Lechner <david@pybricks.com>
2021-06-19 09:43:44 +10:00
..
boards stm32/boards: Enable MICROPY_HW_SPIFLASH_ENABLE_CACHE on VCC_GND boards. 2021-06-10 22:48:17 +10:00
lwip_inc stm32/lwip_inc: Enable LWIP_NETIF_EXT_STATUS_CALLBACK for mDNS. 2019-09-12 18:08:50 +10:00
mbedtls extmod/modussl_mbedtls: Integrate shorter error strings. 2020-07-21 00:31:05 +10:00
mboot stm32/mboot: Leave bootloader from thread mode, not from IRQ. 2021-05-21 00:46:01 +10:00
usbdev stm32/usbdev: Fix calculation of SCSI LUN size with multiple LUNs. 2020-07-25 01:12:07 +10:00
usbhost stm32: Remove unneeded HTML release notes from usbdev and usbhost dirs. 2018-05-24 11:28:54 +10:00
Makefile stm32/mboot: Allow mboot to be placed at any location in flash. 2021-04-30 00:42:59 +10:00
README.md stm32/README: Reorg DFU flashing instructions with addition for PYBD. 2020-05-11 21:23:41 +10:00
accel.c all: Use MP_ERROR_TEXT for all error messages. 2020-04-05 15:02:06 +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/adc: Deselect VBAT after reading to prevent battery drain. 2020-12-18 13:32:02 +11:00
adc.h stm32/adc: Allow mboot to use basic ADC functions. 2021-04-30 00:42:59 +10:00
autoflash ports: Make new ports/ sub-directory and move all ports there. 2017-09-06 13:40:51 +10:00
boardctrl.c stm32/boardctrl: Adjust logic for running boot.py, main.py. 2021-05-12 13:44:47 +10:00
boardctrl.h stm32/boardctrl: Add constants for reset mode values. 2021-04-30 00:31:35 +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/Makefile: Change -O0 to -Og for DEBUG=1 builds. 2020-12-07 22:27:38 +11:00
can.h stm32/can: Guard header file by MICROPY_HW_ENABLE_CAN. 2019-09-23 23:45:07 +10:00
dac.c all: Use MP_ERROR_TEXT for all error messages. 2020-04-05 15:02:06 +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/sdio: Fix case of SDIO DMA turning off mid transfer. 2021-05-21 00:08:13 +10:00
dma.h stm32: Add initial support for STM32WBxx MCUs. 2019-07-17 16:33:31 +10:00
eth.c stm32/eth: Fix eth_link_status function to use correct BSR bit. 2021-06-13 12:29:11 +10:00
eth.h stm32/eth: Add low-power mode configuration option. 2021-06-13 12:27:33 +10:00
extint.c all: Use MP_ERROR_TEXT for all error messages. 2020-04-05 15:02:06 +10:00
extint.h stm32: Add initial support for STM32WBxx MCUs. 2019-07-17 16:33:31 +10:00
factoryreset.c stm32/factoryreset: Provide empty create-FS function when FAT disabled. 2020-06-17 00:09:37 +10:00
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/fdcan: Support maximum timeout of HAL_MAX_DELAY in can_receive. 2020-07-09 00:38:40 +10:00
flash.c stm32/flash: Implement WB55 flash locking. 2020-11-16 17:08:30 +11:00
flash.h stm32/flash: Update flash_get_sector_info to return -1 on invalid addr. 2020-06-30 21:24:28 +10:00
flashbdev.c stm32/flash: Update flash_get_sector_info to return -1 on invalid addr. 2020-06-30 21:24:28 +10:00
font_petme128_8x8.h all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
gccollect.c stm32/softtimer: Support static soft timer instances. 2021-04-29 16:54:35 +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 all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
i2c.c stm32: Add support for a board to reserve certain peripherals. 2020-12-07 17:22:08 +11:00
i2c.h stm32/i2c: Factor I2C finding code to i2c_find_peripheral function. 2020-12-07 17:21:36 +11:00
i2cslave.c stm32/i2cslave: Pass I2C instance to callbacks to support multi I2Cs. 2020-06-26 23:56:45 +10:00
i2cslave.h stm32/i2cslave: Pass I2C instance to callbacks to support multi I2Cs. 2020-06-26 23:56:45 +10:00
irq.c stm32/irq: Clean up irq.h so it does not depend on core uPy defines. 2020-06-22 13:47:15 +10:00
irq.h stm32/irq: Clean up irq.h so it does not depend on core uPy defines. 2020-06-22 13:47:15 +10:00
lcd.c all: Use MP_ERROR_TEXT for all error messages. 2020-04-05 15:02:06 +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/led: Support PWM output without TIM3. 2020-09-18 18:37:11 +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: Allow mboot to use basic ADC functions. 2021-04-30 00:42:59 +10:00
machine_i2c.c stm32/i2c: Factor I2C finding code to i2c_find_peripheral function. 2020-12-07 17:21:36 +11:00
machine_spi.c ports: Support legacy soft I2C/SPI construction via id=-1 arg. 2020-10-01 12:57:10 +10:00
machine_timer.c stm32/softtimer: Support static soft timer instances. 2021-04-29 16:54:35 +10:00
machine_uart.c all: Replace busses with buses. 2021-05-20 23:22:03 +10:00
main.c stm32/boardctrl: Add constants for reset mode values. 2021-04-30 00:31:35 +10:00
make-stmconst.py stm32/make-stmconst.py: Allow "[]" chars when parsing source comments. 2021-03-10 23:44:02 +11:00
modmachine.c stm32/mboot: Allow mboot to be placed at any location in flash. 2021-04-30 00:42:59 +10:00
modmachine.h ports: Add SoftI2C and SoftSPI to machine module where appropriate. 2020-10-01 12:57:10 +10:00
modnetwork.c all: Format code to add space after C++-style comment start. 2020-04-23 11:24:25 +10:00
modnetwork.h stm32/modnetwork: Replace generic netif NIC polling with specific code. 2019-06-03 17:14:34 +10:00
modnwcc3k.c all: Format code to add space after C++-style comment start. 2020-04-23 11:24:25 +10:00
modnwwiznet5k.c all: Format code to add space after C++-style comment start. 2020-04-23 11:24:25 +10:00
modpyb.c stm32/irq: Clean up irq.h so it does not depend on core uPy defines. 2020-06-22 13:47:15 +10:00
modstm.c stm32/rfcore: Add Python API for basic rfcore operations. 2020-10-08 17:37:11 +11:00
moduos.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
modusocket.c all: Fix implicit floating point to integer conversions. 2020-04-18 22:42:24 +10:00
modutime.c extmod/utime_mphal: Add generic utime.time_ns() function. 2020-10-01 14:20:42 +10:00
mpbthciport.c stm32/mpbthciport: Use mp_printf instead of printf for error message. 2021-02-17 15:47:17 +11:00
mpbtstackport.c stm32/mpbtstackport: Allow chipset and secondary baudrate to be set. 2021-02-17 15:47:17 +11:00
mpbtstackport.h extmod/modbluetooth: Refactor stack/hci/driver/port bindings. 2020-09-08 11:41:31 +10:00
mpconfigboard_common.h stm32/powerctrl: Add MICROPY_HW_ENTER_BOOTLOADER_VIA_RESET option. 2021-05-12 13:44:41 +10:00
mpconfigport.h stm32/usb: Add USB_VCP.irq method, to set a callback on USB data RX. 2021-06-10 15:26:21 +10:00
mpconfigport.mk stm32/mboot: Add support for signed and encrypted firmware updates. 2021-01-18 12:43:01 +11:00
mpconfigport_nanbox.h stm32: Add configuration to build in nanbox mode. 2019-12-27 22:54:53 +11:00
mphalport.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
mphalport.h stm32/flash: Make flash C-API reusable, and funcs return an error code. 2020-06-22 14:18:15 +10:00
mpnimbleport.c extmod/nimble: Make stm32 and unix NimBLE ports use synchronous events. 2020-11-13 17:19:05 +11:00
mpnimbleport.h extmod/modbluetooth: Refactor stack/hci/driver/port bindings. 2020-09-08 11:41:31 +10:00
mpthreadport.c all: Use MP_ERROR_TEXT for all error messages. 2020-04-05 15:02:06 +10:00
mpthreadport.h py/mpthread.h: Use strong type for mp_thread_set_state() argument. 2020-01-29 17:10:32 +11:00
mpu.h all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
network_lan.c stm32/eth: Add low-power mode configuration option. 2021-06-13 12:27:33 +10:00
network_wiznet5k.c all: Use MP_ERROR_TEXT for all error messages. 2020-04-05 15:02:06 +10:00
pendsv.c py/mpstate: Make exceptions thread-local. 2021-06-19 09:43:44 +10:00
pendsv.h extmod/nimble: Make stm32 and unix NimBLE ports use synchronous events. 2020-11-13 17:19:05 +11:00
pin.c all: Use MP_ERROR_TEXT for all error messages. 2020-04-05 15:02:06 +10:00
pin.h all: Format code to add space after C++-style comment start. 2020-04-23 11:24:25 +10:00
pin_defs_stm32.c stm32/pin_defs_stm32: Fix pin printing to show IN mode correctly. 2020-08-21 13:42:47 +10:00
pin_defs_stm32.h stm32/uart: Add support for LPUART1 on L0, L4, H7 and WB MCUs. 2021-02-21 15:49:32 +11:00
pin_named_pins.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
pin_static_af.h all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +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: Add MICROPY_HW_ENTER_BOOTLOADER_VIA_RESET option. 2021-05-12 13:44:41 +10:00
powerctrl.h stm32/powerctrl.h: Include stdbool.h to get definition of bool. 2020-08-29 14:00:24 +10:00
powerctrlboot.c stm32/powerctrlboot: Acquire HSEM5 on STM32WB during SystemClock_Config. 2020-09-08 23:53:12 +10:00
pyb_can.c stm32/pyb_can: Add ability to calculate CAN bit timing from baudrate. 2020-12-17 23:01:15 +11:00
pyb_i2c.c all: Replace busses with buses. 2021-05-20 23:22:03 +10:00
pyb_spi.c all: Replace busses with buses. 2021-05-20 23:22:03 +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 all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
pybthread.h all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
qspi.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
qspi.h stm32/qspi: Add hardware QSPI driver, with memory-map capability. 2018-03-03 00:17:08 +11:00
qstrdefsport.h all: Add *FORMAT-OFF* in various places. 2020-02-28 10:31:07 +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/rfcore: Intercept addr-resolution HCI cmd to work around BLE bug. 2021-04-12 21:51:11 +10:00
rfcore.h stm32/flash: Implement WB55 flash locking. 2020-11-16 17:08:30 +11:00
rng.c stm32/rng: Use SysTick+RTC+unique-id to seed pRNG for MCUs without RNG. 2020-10-29 14:14:40 +11:00
rng.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
rtc.c docs,stm32: Fix minor typos in RTC docs, and->an. 2021-01-30 14:13:30 +11:00
rtc.h stm32/rtc.h: Include py/obj.h to make header self contained. 2020-09-10 20:46:40 +10:00
sdcard.c stm32/sdcard: Allow configuring the SDMMC periph used for SD/MMC card. 2021-04-30 00:58:17 +10:00
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: Fix case of SDIO DMA turning off mid transfer. 2021-05-21 00:08:13 +10:00
sdio.h stm32/sdio: Add functions to re/enable SDIO/SDIOIT. 2021-04-30 01:12:08 +10:00
sdram.c stm32/sdram: Prevent array-bounds warnings with GCC 11. 2021-06-10 22:48:54 +10:00
sdram.h stm32/sdram: Add SDRAM enter/leave self-refresh mode functions. 2020-12-17 23:19:25 +11:00
servo.c stm32/servo: Fix angle and speed methods to work again with -ve args. 2020-09-12 13:47:59 +10:00
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: Support static soft timer instances. 2021-04-29 16:54:35 +10:00
softtimer.h stm32/softtimer: Support static soft timer instances. 2021-04-29 16:54:35 +10:00
spi.c all: Replace busses with buses. 2021-05-20 23:22:03 +10:00
spi.h ports: Add SoftI2C and SoftSPI to machine module where appropriate. 2020-10-01 12:57:10 +10:00
spibdev.c drivers/memory/spiflash: Add MICROPY_HW_SPIFLASH_ENABLE_CACHE option. 2020-12-18 13:39:32 +11:00
stm32_it.c stm32/uart: Add support for LPUART1 on L0, L4, H7 and WB MCUs. 2021-02-21 15:49:32 +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/storage: Prevent attempts to read/write invalid block addresses. 2021-03-09 15:32:50 +11:00
storage.h stm32/main: Do extended readblocks call when auto-detecting littlefs. 2020-12-18 13:39:28 +11:00
system_stm32.c stm32/powerctrl: Support using PLLI2C on STM32F413 as USB clock source. 2021-04-07 12:47:21 +10:00
systick.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
systick.h stm32: Refactor bluetooth stack/hci/driver bindings. 2020-03-10 01:53:42 +11:00
timer.c stm32: Add support for a board to reserve certain peripherals. 2020-12-07 17:22:08 +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: Configure pull-up only on RX and CTS, not TX and RTS. 2021-05-21 00:38:04 +10:00
uart.h stm32/uart: Add support for LPUART1 on L0, L4, H7 and WB MCUs. 2021-02-21 15:49:32 +11:00
usb.c stm32/usb: Add USB_VCP.irq method, to set a callback on USB data RX. 2021-06-10 15:26:21 +10:00
usb.h stm32/usb: Allow a board to configure USBD_VID and all PIDs. 2021-02-17 14:40:43 +11:00
usbd_cdc_interface.c stm32/usb: Add USB_VCP.irq method, to set a callback on USB data RX. 2021-06-10 15:26:21 +10:00
usbd_cdc_interface.h stm32/usb: Add USB_VCP.irq method, to set a callback on USB data RX. 2021-06-10 15:26:21 +10:00
usbd_conf.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
usbd_conf.h stm32/usb: Add support for 2xVCP on L0, L432 and WB MCUs. 2020-06-17 00:09:42 +10:00
usbd_desc.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +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 all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
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 all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
usbd_msc_interface.h stm32/usbdev: Fix calculation of SCSI LUN size with multiple LUNs. 2020-07-25 01:12:07 +10:00
usrsw.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
usrsw.h stm32: Change header include guards from STMHAL to STM32 to match dir. 2018-02-15 15:47:04 +11:00
wdt.c all: Use MP_ERROR_TEXT for all error messages. 2020-04-05 15:02:06 +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.

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).

Flashing the Firmware using DFU mode

You must then get your board/microcontroller into DFU (Device Firmware Update) mode.

If you already have MicroPython installed on the board you can do that by calling machine.bootloader() on the board, either at the REPL or using pyboard.py. A nice property of this approach is that you can automate it so you can update the board without manually pressing any buttons.

If you do not have MicroPython running yet, temporarily jumper your board's DFU pin (typ. BOOT0) to 3.3v and reset or power-on the board.

On a pyboard the P1/DFU pin and a 3.3v pin are next to each other (on the bottom left of the board, second row from the bottom) and the reset button is labeled RST.

For the pyboard D-series you can enter the mboot DFU bootloader by holding down the USR button, pressing and releasing the RST button, and continuing to hold down USR until the LED is white (4th in the cycle), then let go of USR while the LED is white. The LED will then flash red once per second to indicate it is in USB DFU mode.

Once the board is in DFU mode, 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