After much creative coding and abusing of the Digital Logic API, I finally managed to take control of the uFR Nano’s RF field to make it flash Morse code on my doNExT, for my smart bracelet project (since I can’t reverse-engineer the ChameleonTiny Pro’s BLE protocol). Check it out:
It’s very slow: I can’t get it to go faster than 7 words per minute without messing up the Morse code timings beyond recognition. That’s a limitation of the firmware: it just wasn’t designed to do that. But I reached out to Digital Logic, and maybe I’ll be getting some help from them. They already replied and gave me some pretty good technical tips, so there is hope.
If it was a bit faster, it’d be perfect to power the bracelet.