Hi,
I want the MCU to wake up when a message arrives.
I guess for this purpose there is the "RF IRQ" connection from pin 22 of the LoRa module to PA28 (see schematics).
The sandeepmistry lora library I use has the function "LoRa.setPins(ss, reset, dio0);" with "dio0
- new DIO0 pin to use, defaults to 2
. Must be interrupt capable via attachInterrupt(...)".
So far, so good, I guess I can tell the library to use PA28 as interrupt pin.
BUT: is the lora ic configured that it uses its pin 22 (labeled "PA4/ADC4/DAC1") instead of pin 13 (labeled "dio0") as interrupt output?
Does anyone know this?
Or has found or uses a different way to wake up the mcu when a lora message arrives?
Have a nice day!