LoRA HAT pins

This is derived from the schematics; showing the 5 specific pins used (only)

looking down, Pin1 is top left, Pin40 bottom right

        3v3  -- o o -- 5v
                o o -- 5v
                o o -- GND
    AUX  ------ o o ------ TX (set to USB serial via jumpers on HAT)
         GND -- o o ------ RX (set to USB serial via jumpers on HAT)
             -- o o --
    M1   ------ o o -- GND
    M0   ------ o o --
         3v3 -- o o --
             -- o o -- GND
             -- o o --
             -- o o --
         GND -- o o --
             -- o o --
             -- o o -- GND
             -- o o --
             -- o o -- GND
             -- o o --
             -- o o --
         GND -- o o --

The three fixed pins used by the HAT are 7,13 and 15. These map as follows:

AUX is on PB7
M1 is on PD22
M0 is on PB0

The Serial (TX,RX) is deselected via onboard jumpers, a secondary serial will be jumpered to the module TX/RX instead.

References

Lora HAT

https://www.waveshare.com/wiki/SX1262_868M_LoRa_HAT