76c81cd5a6
Useful for testing fragmentation issues in OS heap. E.g. freemem() may report large amount, but is it possible to actually allocate block of a given size? Issue malloc() (followed by free()) to find out. |
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|---|---|---|
| .. | ||
| scripts | ||
| axtls_helpers.c | ||
| eagle.rom.addr.v6.ld | ||
| esp8266.ld | ||
| esp_mphal.c | ||
| esp_mphal.h | ||
| espneopixel.c | ||
| espneopixel.h | ||
| esponewire.c | ||
| esponewire.h | ||
| esppwm.c | ||
| esppwm.h | ||
| ets_alt_task.c | ||
| ets_alt_task.h | ||
| etshal.h | ||
| fatfs_port.c | ||
| gccollect.c | ||
| gccollect.h | ||
| gchelper.s | ||
| help.c | ||
| intr.c | ||
| lexerstr32.c | ||
| main.c | ||
| Makefile | ||
| makeimg.py | ||
| modesp.c | ||
| modmachine.c | ||
| modnetwork.c | ||
| modonewire.c | ||
| modpyb.c | ||
| modpyb.h | ||
| modpybadc.c | ||
| modpybpin.c | ||
| modpybpwm.c | ||
| modpybrtc.c | ||
| modpybrtc.h | ||
| modpybspi.c | ||
| modpybuart.c | ||
| moduos.c | ||
| modutime.c | ||
| mpconfigport.h | ||
| qstrdefsport.h | ||
| README.md | ||
| strtoll.c | ||
| uart_register.h | ||
| uart.c | ||
| uart.h | ||
| user_config.h | ||
MicroPython port to ESP8266
This is a highly experimental port of MicroPython for the WiFi modules based on Espressif ESP8266 chip.
WARNING: The port is highly experimental and any APIs are subject to change.
Currently implemented features include:
- REPL (Python prompt) over UART0.
- Garbage collector, exceptions.
- Unicode support.
- Builtin modules: gc, array, collections, io, struct, sys, esp, network, many more.
- Arbitrary-precision long integers and 30-bit precision floats.
- WiFi support.
- Sockets using modlwip.
- GPIO and bit-banging I2C, SPI support.
- 1-Wire and WS2812 (aka Neopixel) protocols support.
- Internal filesystem using the flash.
- WebREPL over WiFi from a browser (clients at https://github.com/micropython/webrepl).
Work-in-progress documentation is available at http://docs.micropython.org/en/latest/esp8266/ .
Build instructions
The tool chain required for the build is the OpenSource ESP SDK, which can be
found at https://github.com/pfalcon/esp-open-sdk. Clone this repository and
run make in its directory to build and install the SDK locally. Make sure
to add toolchain bin directory to your PATH. Read esp-open-sdk's README for
additional important information on toolchain setup.
Add the external dependencies to the MicroPython repository checkout:
$ git submodule update --init
See the README in the repository root for more information about external dependencies.
Then, to build MicroPython for the ESP8266, just run:
$ cd esp8266
$ make axtls
$ make
This will produce binary images in the build/ subdirectory. If you install
MicroPython to your module for the first time, or after installing any other
firmware, you should erase flash completely:
esptool.py --port /dev/ttyXXX erase_flash
Erase flash also as a troubleshooting measure, if a module doesn't behave as expected.
To flash MicroPython image to your ESP8266, use:
$ make deploy
This will use the esptool.py script to download the images. You must have
your ESP module in the bootloader mode, and connected to a serial port on your PC.
The default serial port is /dev/ttyACM0. To specify another, use, eg:
$ make PORT=/dev/ttyUSB0 deploy
The image produced is firmware-combined.bin, to be flashed at 0x00000.
Troubleshooting
While the port is still in alpha, it's known to be generally stable. If you experience strange bootloops, crashes, lockups, here's a list to check against:
- You didn't erase flash before programming MicroPython firmware.
- Firmware can be occasionally flashed incorrectly. Just retry. Recent esptool.py versions have --verify option.
- Power supply you use doesn't provide enough power for ESP8266 or isn't stable enough.
- A module/flash may be defective (not unheard of for cheap modules).
Please consult dedicated ESP8266 forums/resources for hardware-related problems.