at_pico_w

Communicate with the atPlatform using a Raspberry Pi Pico W.

Developed with MicroPython.

Usage

Raspberry Pi Pico W

• Install the latest firmware.uf2 onto your Pico W from atsign-foundation/micropython Releases , as this is patched to enable AES CTR, which is used by atSigns.
• Fill all the fields of the settings.json file (ssid/passw of your Wi-Fi network and atSign).
• Run python3 build.py to generate .mpy files
• Download Thonny IDE and place all the files of the built directory onto the Pico W file system.
• Place your .atKeys file in the ~/.atsign/keys/ directory (if the folder doesn't exist, create it manually)
• Run main.py and select option 3 in the REPL ("Get privateKey for @[yourAtSign]")
• Re-launch the REPL (run main.py again)
• Now you can select option 2 in the REPL to automatically get authenticated in your DESS
• Enjoy! :)

(If you get an error when attempting to find the atServer or when trying to connect to it, run the REPL again)

Micropython on Linux

• Compile micropython with coverage enabled (to get AES CTR) and place the binary somewhere on the PATH (e.g. ~/.local/bin/)
• micropython main.py

Libraries

• iot-core-micropython
• uasn1