MicroPython port for the ESP32 based boards from Pycom

In order to build this project, a copy of the Espressif IDF is required and it's path must be specified via the ESP_IDF_PATH variable. See the Makefile for details.

The modified Espressif IDF that we use to build this port can be found in: https://github.com/pycom/pycom-esp-idf

Build instructions

First build the mpy-cross compiler:

$ cd ../mpy-cross
$ make all

After that, build the ESP32 port for one of Pycom boards (first the bootloader, then the app):

$ cd ../esp32
$ make BOARD=LOPY -j5 TARGET=boot
$ make BOARD=LOPY -j5 LORA_BAND=USE_BAND_868 TARGET=app

Flash the board (connect P2 to GND and reset before starting):

$ make BOARD=LOPY -j5 LORA_BAND=USE_BAND_868 flash

Using frozen modules

Place all the python scripts that you'd like to be frozen into the flash memory of the board inside the 'frozen' folder in the esp32 directory. Then build as indicated before.