People usually come to the forums when something doesn’t work, so it makes me really happy to see a post that’s just about how well everything worked! Thank you!
Correct way to exit the app: not really. If you just press the home button and the app falls to the background, the meter will stay connected but stop sampling. Impact on battery life is quite small. That’s what I do. It has the added convenience that next time I open the app, if I haven’t walked out of range of the meter, it’s faster to re-initialize.
The LED flashing scheme has been totally redone and should be much more consistent and meaningful now. This is from the draft of the blog post I have going (haven’t published yet because I’m still chasing a logging bug that manifests only after a few hours… very troublesome to pin down)
1 blink/sec: BLE connected
1 blink/10 sec: BLE disconnected and advertising, no SD card
2 blink/10 sec: BLE disconnected and advertising, SD card mounted
4 blink/10 sec: BLE disconnected and advertising, SD card error
1 blink/20 sec: BLE off, shipping mode
3 fast blink: sample written to SD card log
Thanks again, let me know if anything comes up