What is this?

This package contains some sample Kaluma JavaScript code to interface with the Waveshare RP2040 1.28 LCD board: https://www.waveshare.com/wiki/RP2040-LCD-1.28

You'll find the index.js file initializes:

1. ADC for battery readings
2. I2C for the IMU, QMI8658
3. SPI for the 240x240 LCD, driven by GC9A01A

The implementation is based on the sample C & MicroPython code, and is in the most basic state to be able to use. Many of the APIs lack proper parameterization or state management to work well - but they got me running on my toy project.

Kaluma Version Warning

Make sure you're using the latest, or later than this issue was resolved: kaluma-project/kaluma#546

Why? The Kaluma implementation of SPI bus 1 mandated that the MISO (input line) is configured for SPI, but on the Waveshare RP2040 1.28 LCD requires the 12th GPIO PIN for the Reset line.

Building Kaluma

Instructions to setup the Kaluma build environment here: https://github.com/kaluma-project/kaluma/wiki/Build

Building & Flashing your Device

1. See https://kalumajs.org/docs/getting-started to install Kaluma onto the device
2. Execute kaluma flash ./src/index.js --bundle --shell to both build and flash the system

Other Environment Setup Reminders

• I think you need to nvm alias default v16.16.0 - run npm list to see what you have installed before selecting, 16+