XC8 is a free-for-the-download C compiler targeting Microchip’s family of 8-bit microcontrollers. Today we will code the drivers for a pair of Reyax RYLR890 LoRa data radios. The target host hardware for today consists of a couple of Microchip Curiosity Development Boards (DM164137) loaded with 8-bit PIC microcontrollers and RYLR890 LoRa data radios.