otaa.h

struct joinRequest {
    uint8_t appEUI[8];
    uint8_t devEUI[8];
    uint8_t devNonce[2];
}

struct joinAccept {
    uint8_t appNonce[3];
    uint8_t netID[3];
    uint8_t devAddr[4];
    uint8_t dlSettings[1];
    uint8_t rxDelay[1];
    uint8_t cfList[16];
}