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.. | ||
scripts | ||
Makefile | ||
README.md | ||
axtls_helpers.c | ||
eagle.rom.addr.v6.ld | ||
esp8266.ld | ||
esp_mphal.c | ||
esp_mphal.h | ||
espapa102.c | ||
espapa102.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 | ||
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 | ||
strtoll.c | ||
uart.c | ||
uart.h | ||
uart_register.h | ||
user_config.h | ||
xtirq.h |
README.md
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.
First start
Serial prompt
You can access the REPL (Python prompt) over UART (the same as used for programming).
- Baudrate: 115200
WiFi
Initally, the device configures itself as a WiFi access point (AP).
- ESSID: MicroPython-xxxxxx (x’s are replaced with part of the MAC address).
- Password: micropythoN (note the upper-case N).
- IP address of the board: 192.168.4.1.
- DHCP-server is activated.
WebREPL
Python prompt over WiFi, connecting through a browser.
- Hosted at http://micropython.org/webrepl.
- GitHub repository https://github.com/micropython/webrepl.
Please follow the instructions there.
More detailed instructions can be found at http://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/intro.html
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.