Few questions about SparkFun Pro RF - LoRa, 915MHz (SAMD21)

Wireless & IoT LoRa (Long Range)
1

Hi everyone,

I have 2 questions about https://www.sparkfun.com/products/15836 / SparkFun Pro RF - LoRa, 915MHz (SAMD21)

  1. Why is it necessary to jump the 2 traces for LoRaWAN? What exactly does it signal to the radio module’s internal firmware?

  2. Is the board capable of OTAA and if yes please kindly point me to a resource which would help me with the Ardino code which would support OTAA

Thank you

Boyan