mdma
September 15, 2015, 9:30pm
4
Serial2 on the photon shares pins with the RGB LED, not D0/D1 on the Core. Sorry for the misinformation - I've filed an issue to have the docs updated.
I’m sorry for the misinformation - I was sure we had Serial2 since I’d not heard otherwise, but as BDub mentions, the 2nd UART goes to the LED pins. These pins are broken out on the underside of the Photon, so could be accessed and used in your project.
A future version of the firmware will make it possible to disable the onboard LED and allow you to route the LED signals to other pins, allowing the original LED pins to be used for Serial2.
I hope that this is workable for you and gives you a…