We are pleased to announce the release of the latest version IRLib 2 which now includes partial support for the Adafruit Trinket M0 and Adafruit Gemma M0 boards. IRLib2 is a library for Arduino and related boards that facilitates the receiving, decoding, and transmitting of infrared signals such as those used by TV remotes. The code is available on Github at https://github.com/cyborg5/IRLib2
All forms of input are available on any of the digital input pins. There are limitations however on the output pins. Neither of the boards support hardware PWM on the pin 1. So that support will not be forthcoming. Theoretically the Trinket M0 should be able to use pin 3 or pin 4 but for some reason we cannot get that code to work. Similarly the Gemma M0 should be able to do output on pin 2 but it does not work either. Both boards are configured to default output on pin 0 and that works fine. Alternately you can use pin 2 on the Trinket M0.