Implement Chronos App support

[jakkra]

I created a skeleton here: https://github.com/jakkra/ZSWatch/tree/jakkra_ble_chronos_app

Commands: https://github.com/fbiego/dt78/blob/master/DT78_COMMANDS.md

Find more info in #254

[fbiego]

I have forked the repo and will be working on it soon. Just a quick question, what name and service(s) does the watch advertise for ble discovery?

[jakkra]

I have forked the repo and will be working on it soon. Just a quick question, what name and service(s) does the watch advertise for ble discovery?

Just the NUS UUID. If you have a Linux computer you can run everything in Linux (even with Bluetooth) if you want to experiment :) https://github.com/jakkra/ZSWatch/blob/main/GETTING_STARTED.md#1-native-posix

Although Zephyr can be a bit daunting if you have not worked with it before.

[fbiego]

Yeah, haven't worked with Zephyr before but I'll try to set it up

[fbiego]

I haven't had any luck setting up Zephyr. Considering this, I'm contemplating rewriting the Chronos library in C.

[jakkra]

I haven't had any luck setting up Zephyr. Considering this, I'm contemplating rewriting the Chronos library in C.

I guess you turned on CPP support in Zephyr?
If you rewrite it in c, I suggest having a port layer with transmit and receive functions, and then your target platform can implement those however suitable.

Something like I did here https://github.com/jakkra/ZSWatch/blob/main/app/src/ble/ble_transport.h
That should make a c library quite flexible and portable.