That is the Arduino official MKRGSM library, the sketch is one of the example sketches provided. It runs on the SAMD core platform. I figured this could be assumed considering this is in the MKRGSM1400 hardware category of the forum.
That is the Arduino official MKRGSM library, the sketch is one of the example sketches provided. It runs on the SAMD core platform. I figured this could be assumed considering this is in the MKRGSM1400 hardware category of the forum.