#define FP_MSG_ACK                                  0x01
#define FP_MSG_NAK                                  0x02
#define FP_MSG_GROUP_ACK                            0xFF


static void fp_msg_send_ack(uint8_t msgGroup, uint8_t msgCode)
{
    FP_MESSAGE_STREAM  req = {FP_MSG_GROUP_ACK, FP_MSG_ACK, 0, 2};

    req.data[0] = msgGroup;
    req.data[1] = msgCode;

   fp_send((uint8_t *)&req);
}

static void fp_msg_send_nak(uint8_t reason, uint8_t msgGroup, uint8_t msgCode)
{
//reason= 0x00: Not supported, 0x01: Device busy, or 0x02: Not allowed due to current state
    FP_MESSAGE_STREAM  req = {FP_MSG_GROUP_ACK, FP_MSG_NAK, 0, 3};

    req.data[0] = reason;
    req.data[1] = msgGroup;
    req.data[2] = msgCode;

   fp_send((uint8_t *)&req);
}