67 lines
2.5 KiB
Markdown
67 lines
2.5 KiB
Markdown
MicroPython port to STM32 MCUs
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==============================
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This directory contains the port of MicroPython to ST's line of STM32Fxxx
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microcontrollers. It is based on the STM32Cube HAL library and currently
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supports: STM32F401, STM32F405, STM32F411, STM32F429, STM32F746.
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The officially supported boards are the line of pyboards: PYBv1.0 and PYBv1.1
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(both with STM32F405), and PYBLITEv1.0 (with STM32F411). See
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[micropython.org/pyboard](http://www.micropython.org/pyboard/) for further
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details.
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Other boards that are supported include ST Discovery and Nucleo boards.
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See the boards/ subdirectory, which contains the configuration files used
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to build each individual board.
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Build instructions
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------------------
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An ARM compiler is required for the build, along with the associated binary
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utilities. The default compiler is `arm-none-eabi-gcc`, which is available for
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Arch Linux via the package `arm-none-eabi-gcc`, for Ubuntu via instructions
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[here](https://launchpad.net/~team-gcc-arm-embedded/+archive/ubuntu/ppa), or
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see [here](https://launchpad.net/gcc-arm-embedded) for the main GCC ARM
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Embedded page. The compiler can be changed using the `CROSS_COMPILE` variable
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when invoking `make`.
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To build for a given board, run:
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$ make BOARD=PYBV11
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The default board is PYBV10 but any of the names of the subdirectories in the
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`boards/` directory can be passed as the argument to `BOARD=`. The above command
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should produce binary images in the `build-PYBV11/` subdirectory (or the
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equivalent directory for the board specified).
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You must then get your board/microcontroller into DFU mode. On the pyboard
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connect the 3V3 pin to the P1/DFU pin with a wire (they are next to each
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other on the bottom left of the board, second row from the bottom) and then
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reset (by pressing the RST button) or power on the board. Then flash the
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firmware using the command:
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$ make BOARD=PYBV11 deploy
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This will use the included `tools/pydfu.py` script. You can use instead the
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`dfu-util` program (available [here](http://dfu-util.sourceforge.net/)) by
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passing `USE_PYDFU=0`:
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$ make BOARD=PYBV11 USE_PYDFU=0 deploy
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If flashing the firmware does not work it may be because you don't have the
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correct permissions. Try then:
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$ sudo make BOARD=PYBV11 deploy
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Or using `dfu-util` directly:
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$ sudo dfu-util -a 0 -d 0483:df11 -D build-PYBV11/firmware.dfu
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Accessing the board
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-------------------
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Once built and deployed, access the MicroPython REPL (the Python prompt) via USB
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serial or UART, depending on the board. For the pyboard you can try:
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$ picocom /dev/ttyACM0
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