66 lines
2.0 KiB
Markdown
66 lines
2.0 KiB
Markdown
MicroPython port to ESP8266
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===========================
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This is a highly experimental port of MicroPython for the WiFi modules based
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on Espressif ESP8266 chip.
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WARNING: The port is highly experimental and any APIs are subject to change.
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Currently implemented features include:
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- REPL (Python prompt) over UART0.
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- 24k heap RAM available for Python code.
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- Garbage collector, exceptions.
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- Unicode support.
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- Builtin modules: gc, array, collections, io, struct, sys, esp, network.
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- C long-long type used as bignum implementation (gives 64 bit signed ints).
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- Rudimentary WiFi support in station mode.
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- Sockets with callbacks.
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- Basic GPIO support.
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Note that floating-point numbers are not supported.
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On the TODO list:
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- Full wifi support.
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- Internal filesystem using the flash.
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- ...
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Build instructions
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------------------
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The tool chain required for the build is the OpenSource ESP SDK, which can be
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found at <https://github.com/pfalcon/esp-open-sdk>. Clone this repository and
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run `make` in its directory to build and install the SDK locally. Make sure
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to add toolchain bin directory to your PATH.
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Add the external dependencies to the MicroPython repository checkout:
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```bash
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$ git submodule update --init
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```
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See the README in the repository root for more information about external
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dependencies.
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Then, to build MicroPython for the ESP8266, just run:
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```bash
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$ cd esp8266
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$ make
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```
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This should produce binary images in the `build/` subdirectory. To flash them
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to your ESP8266, use:
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```bash
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$ make deploy
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```
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This will use the `esptool.py` script to download the images. You must have
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your ESP module in the bootloader, and connected to a serial port on your PC.
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The default serial port is `/dev/ttyACM0`. To specify another, use, eg:
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```bash
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$ make PORT=/dev/ttyUSB0 deploy
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```
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The images that are built are:
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- `firmware.elf-0x00000.bin`: to be flashed at 0x00000
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- `firmware.elf-0x10000.bin`: to be flashed at 0x10000
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There is also a combined image, made up of the above 2 binary files with the
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appropriate padding:
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- `firmware-combined.bin`: to be flashed at 0x00000
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