DeuxVis

@antonio-emilio For your information I did a port of Arduino-LMIC to Energia - the arduino IDE for MSP430 dev boards. Haven't used / updated it recently but here it is...

1) For lorawan / thethingsnetwork, dio2 is not necessary 2) You should activate arduino verbose compilation log in "File -> Preferences" :  and show us the output.

Pierrot, not sure this is the root cause but as I read `strlen((char *)payload-1)` I understand "length of the string starting 1 byte before payload". Maybe you want to use...

Have you wired pullup resitors to your input pins ? If not you should use `pinMode( pinX, INPUT_PULLUP );` or `pinMode( pinX, INPUT ); digitalWrite( pinX, HIGH ); ` (Not...

Just get sure that your buttons wiring match the pull[up|down] resistors scheme : if the resistors are pulldowns, your button must put a positive voltage on the pin when activated,...

This maybe can help reduce the consumption : https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series/issues/17#issuecomment-368258052 "If you power the device from the 3.3V pin the battery charger won't be enabled"

Actually having the footprints for all your boards would really be nice.

The female half in [that lot](https://www.ebay.fr/itm/20-Paire-Micro-JST-1-25mm-2-Broches-Mâle-Femelle-Connecteur-Avec-Câbles-100mm/182462448865) is what you are looking for, just received and tested they plug fine. The seller call it "micro JST 1.25"...

I haven't done any battery testing yet, but the guy who designed [that printable enclosure](https://www.thingiverse.com/thing:2581459/#comments) has. Have a look in the comment section someone asked him about the battery model....

Note that this is maybe specific to the compiler version too. I don't reproduce the errors with gcc 10.3.0 on linux, only the deprecation warnings.