Show HN: OpenDeck – DIY MIDI Platform Based on Zephyr RTOS(github.com)
github.com
Show HN: OpenDeck – DIY MIDI Platform Based on Zephyr RTOS
https://github.com/shanteacontrols/OpenDeck
3 comments
10 years on a project then a full rewrite to zephyr - thats the move. curious how the migration went. did you have to port all your drivers to zephyrs device tree model or were you able to keep some of the old code
It certainly wasn't trivial but most of the driver logic stayed the same. I'd say the most complex part is extracting all the information via from the device tree. Those macros are quite something.
Name clash: https://github.com/nekename/OpenDeck
The platform itself allows for simple building and configuring of custom MIDI controllers - main reason for that is because it requires no coding. Load the firmware on the board, configure it via web configurator and you're good to go. The amount of configurable features is also huge. I do have extensive documentation which covers usage, configuration, flashing of various boards, customization of own boards etc. All available on GitHub.
The platform supports a large number of various boards - not only my own, custom designs, which I sell, but boards like Raspberry Pi Pico 1 and 2, STM32F4 Discovery, Teensy 4 and 4.1, nRF52840DK etc. Lots of choices. Before Zephyr, I rolled my own HAL for various platforms and YAML-based peripheral configuration, both of which is now replaced with Zephyr and its various subsystems and tools, primarily device tree. I must admit however I do not enjoy C at all so most of the stuff I use is wrapped in an external C++ library (zlibs) used as west module on which OpenDeck depends. The project itself is written in C++20. Currently I'm using Zephyr 4.4 and its MIDI 2.0 driver in MIDI 1 compatibility mode, as well as WebUSB for firmware updates, so this is a fairly modern stack.