Requirements
v1.12 and earlier will work on modules with 1M or more of flash, while v1.13 requires 2M or more.
ESP8266 ESP01 (512K flash) supported by limited features.
ESP01/01s USB-UART Programmer and UART device drivers. For uploading firmware and Python REPL from the serial console
PC / Notebook (Windows/MacOS – Intel) has been installed with Python 3.x and esptools.py utility program. Try this to install esptools
Thonny and Visual Studio IDE for coding editor for python
pip3 install esptool
Download Firmware
https://github.com/micropython/micropython/tree/master/ports/esp8266
https://micropython.org/download/esp8266/
Upload lastest firmware to ESP8266 (512 KB) with esptools.py utility installed on the PC/Notebook (Window/MacOS – Intel) and ESP01/01s USB-UART Programmer
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Using esptool.py you can erase the flash with the command:
esptool.py --port /dev/ttyUSB0 erase_flash
And then deploy the new firmware using esptools.py and filename of the latest binary ESP8266 firmware.
esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=detect 0 esp8266-xxxxx.bin
Using MicroPython (REPL) via USB-UART (Serial) Programmer on MacOS (Intel) screen utility
screen /dev/tty.SLAB_UART 115200
Note: Press ENTER key when the blinking cursor is on the screen without the REPL prompt.
>>> print(“Hello MicroPython”)
Blink LED (build-in) and main.py filename
Tutorials
http://docs.micropython.org/en/latest/esp8266/tutorial/index.html
Tutorial of Thonny IDE installation (MacOS – Intel)
https://github.com/thonny/thonny/wiki/MacOSX
Troubleshooting Problem
http://docs.micropython.org/en/latest/esp8266/tutorial/intro.html#deploying-the-firmware
Resources
http://docs.micropython.org/en/latest/esp8266/quickref.html