published: August 18, 2019 — last modified: October 23, 2025
I added more modules to the HAL layer. The Hitachi LCD driver is now in a stable state. It uses a MCP23008 chip-based backend to reduce the number of wires required to access the display.
Table of Contents
This demo uses a number of Adafruit boards and components:
You will find all the firmware files in the following repositories. The demo repository includes all required dependencies using submodules.
After installing the firmware on the board, just connect a USB cable and start a terminal on the computer. The firmware waits for the serial connection. A shell with command prompt is displayed in the terminal.
Enter help to get a list of supported commands. Some of them take additional arguments.
The HAL system provides a complete framework for firmware development. It is still in an early stage, but already provides concepts and tools which can be useful for productive projects. This demo illustrates a number of these features.
If you have any questions, missing some information, or simply wish to provide feedback, feel free to comment below!
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