I am just uaimg the data, not the actual harness at the moment. Don't be disappointed but I threw together a 5 line test harness in Python for quicker testing. Everything I've done can be implemented in C, though it has been a good decade since I wrote any.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Great. If you are experimenting in C and using the test harness then you are up and running.
I recorded a lot of those samples on a Bangle 2 using the accellog app. Most of the ones I recorded are called hughb-something.
Its good to have fresh minds on this.