Choose you favorite way of programming your Iono RP D16, the multi-purpose digital I/O module with a Raspberry Pi RP2040 (Pico) computing core:
Repository: https://github.com/sfera-labs/iono-rp-d16-arduino
Use the simplicity of the Arduino IDE to write your powerful firmware. Includes examples and ready-to-use applications, like the Modbus RTU Slave app.
Repository: https://github.com/sfera-labs/iono-rp-d16-c
For low level, highly optimized programming and access to all the functionalities of the native Raspberry Pi Pico C/C++ SDK.
Repository: https://github.com/sfera-labs/iono-rp-d16-micropython
The flexibility of the Python language, plus an interactive prompt (the REPL) to execute commands on the fly, optimized to run on microcontrollers.