mpy-esp8266

Building micropython for esp8266 & pybd boards.

Setting up the tool chains for the esp8266 on mac was a pain, so I am using a Vagrantfile to manage a VM with the tools.

Using the image

Create a VM with the virtualbox provider by using vagrant up. The scripts provisioning the image and building the firmware are in providers.

The VM will mount the folder containing the Vagrantfile as sources directory, and copy firmware images into it. To build the firmware use vagrant provision --provision-with build-image.

Adding modules to the firmware

Python sources that should be baked into the firmware can be added to modules. If sources from a different location should be added these can be added to manifest.py.

Firmware for esp8266

Install micropython on an esp8266 board:

• Install firmware
• Development reference

Steps to follow (backup first!):

pip3 install esptool
esptool.py --port /dev/tty.usbserial* read_mac
esptool.py --port /dev/tty.usbserial* erase_flash
esptool.py --port /dev/tty.usbserial* --baud 460800 write_flash --flash_size=detect 0 <firmware.bin>

Firmware for pybd

Use pydfu.py from micropython:

pip3 install pyusb pyserial
python3 pydfu.py -u <firmware.dfu>
# -- or via build if mapped to the image --
make BOARD=PYBD_SF2 deploy

Related

• Prebuild firmeare
• Pybd update process
• Firmware building
• Firmware building on macOS
• Espressif toolchain setup
• https://github.com/fcollova/micropython-docker-build
• https://github.com/flusflas/micropython-builder
• https://github.com/larsks/docker-image-esp-open-sdk
• and others