The SH1106 OLED on the LilyGo T-Beam Supreme V3 never lights up because:
1. The primary I2C bus (Wire) that the OLED, BME280 and magnetometer share
is never initialized. The PMU/RTC use Wire1 (via XPowersLib); nothing
brings up Wire on PIN_BOARD_SDA/PIN_BOARD_SCL, so the display driver
talks on the wrong default pins.
2. The OLED is at I2C address 0x3D on this board (0x3C is taken by the
QMC6310 magnetometer), but SH1106Display::begin() only tried 0x3C.
Initialize Wire for TBEAM_SUPREME_SX1262, and have SH1106Display::begin()
prefer 0x3D (only ever used by the OLED) before falling back to 0x3C.
Backwards-compatible for boards with the OLED at 0x3C.
Closes#2609
There is a lot to this PR, so if there are any questions let me know.
The idea here is to merge T-Beam fw so that there is less redundant code. Most versions (except the 0.7) share PMU code, init sequence, and most IO pin definitions.
- Merged all T-Beam board.h files into one TBeamBoard.
- Added PMU code to identify different AXP chips.
- Modified "lilygo tbeam SX1276" variant to cover all T-Beam SX1276 versions
- Modified "lilygo tbeam SX1262" variant to cover all T-Beam SX1262 versions
- Enabled GPS on all T-Beam versions/models
- Enabled BME280 on the Supreme
I am also updating EnvironmentSensorManager to allow for boards that do or don't have GPS enable pins, as well as a PERSISTANT_GPS define check for boards that want GPS to stay active after boot.
