I am new to SAMD21 based developement boards and I am trying to conect an MPU6050 and I2C FRAM from Adafruit. But I am confused about how to Program it because I understand that i need to run Serial1, but then I'm unable to troubleshoot thru serial monitor because this board don't debbuger IC. Dose anyone have any exampes or at least to be able to guide me into any examples or something similar that would get me on the right track. Because I was unable to find anything that would explain more accept the Adafruit tutorial.
This is the link to board that I'm using: SparkFun SAMD21 Dev Breakout - DEV-13672 - SparkFun Electronics