is there some trick to getting Serial1 to work on the wireless stick lite? I notice a solder bridge on the bottom of the board next to GPIO9 / U1_RX. Can’t tell if its a jumper or rework but it is on both boards I have.
I never get Serial1.available() to return true. I tried connecting pin 9 to pin 10 (loopback). It is the RX side that isn’t working, TX is fine.
I tried both:
The same code works on an AVR (also with TX1 and RX1 connected)
uint8_t c = Serial1.read();