static uint8_t receive_packet_variable(uint8_t *rxBuffer, uint8_t length) {
uint8_t status[2];
uint8_t packetLength = 0;
/* Any bytes available in RX FIFO? */
if ((cc110x_read_status(CC1100_RXBYTES) & BYTES_IN_RXFIFO)) {
// Read length byte (first byte in RX FIFO)
cc110x_read_fifo((char*) &packetLength, 1);
// Read data from RX FIFO and store in rxBuffer
if (packetLength <= length)
{
// Put length byte at first position in RX Buffer
rxBuffer[0] = packetLength;
// Read the rest of the packet
//cc110x_readburst_reg(CC1100_RXFIFO, (char*)rxBuffer+1, packetLength);
cc110x_read_fifo((char*) rxBuffer + 1, packetLength);
// Read the 2 appended status bytes (status[0] = RSSI, status[1] = LQI)
cc110x_readburst_reg(CC1100_RXFIFO, (char*)status, 2);
// Store RSSI value of packet
rflags._RSSI = status[I_RSSI];
// MSB of LQI is the CRC_OK bit
rflags.CRC = (status[I_LQI] & CRC_OK) >> 7;
if (!rflags.CRC) {
cc110x_statistic.packets_in_crc_fail++;
}
// Bit 0-6 of LQI indicates the link quality (LQI)
rflags._LQI = status[I_LQI] & LQI_EST;
return rflags.CRC;
}
/*---------------------------------------------------------------------------*/
int16_t cc110x_set_channel(uint8_t channr)
{
uint8_t state = cc110x_read_status(CC1100_MARCSTATE) & MARC_STATE;
if((state != 1) && (channr > MAX_CHANNR)) {
return -1;
}
write_register(CC1100_CHANNR, channr * 10);
radio_channel = channr;
return radio_channel;
}
static uint8_t receive_packet_variable(uint8_t *rxBuffer, radio_packet_length_t length)
{
uint8_t status[2];
/* Any bytes available in RX FIFO? */
if ((cc110x_read_status(CC1100_RXBYTES) & BYTES_IN_RXFIFO)) {
uint8_t packetLength = 0;
/* Read length byte (first byte in RX FIFO) */
packetLength = cc110x_read_reg(CC1100_RXFIFO);
/* Read data from RX FIFO and store in rxBuffer */
if (packetLength <= length) {
uint8_t crc_ok = 0;
/* Put length byte at first position in RX Buffer */
rxBuffer[0] = packetLength;
/* Read the rest of the packet */
cc110x_readburst_reg(CC1100_RXFIFO, (char *) rxBuffer + 1, packetLength);
/* Read the 2 appended status bytes (status[0] = RSSI, status[1] = LQI) */
cc110x_readburst_reg(CC1100_RXFIFO, (char *)status, 2);
/* Store RSSI value of packet */
rflags._RSSI = status[I_RSSI];
/* MSB of LQI is the CRC_OK bit */
crc_ok = (status[I_LQI] & CRC_OK) >> 7;
if (!crc_ok) {
cc110x_statistic.packets_in_crc_fail++;
}
/* Bit 0-6 of LQI indicates the link quality (LQI) */
rflags._LQI = status[I_LQI] & LQI_EST;
return crc_ok;
}
char *cc110x_get_marc_state(void)
{
uint8_t state;
/* Save old radio state */
uint8_t old_state = radio_state;
/* Read content of status register */
state = cc110x_read_status(CC1100_MARCSTATE) & MARC_STATE;
/* Make sure in IDLE state.
* Only goes to IDLE if state was RX/WOR */
cc110x_wakeup_from_rx();
/* Have to put radio back to WOR/RX if old radio state
* was WOR/RX, otherwise no action is necessary */
if(old_state == RADIO_WOR || old_state == RADIO_RX) {
cc110x_switch_to_rx();
}
switch(state) {
/* Note: it is not possible to read back the SLEEP or XOFF state numbers
* because setting CSn low will make the chip enter the IDLE mode from the
* SLEEP (0) or XOFF (2) states. */
case 1:
return "IDLE";
case 3:
case 4:
case 5:
return "MANCAL";
case 6:
case 7:
return "FS_WAKEUP";
case 8:
case 12:
return "CALIBRATE";
case 9:
case 10:
case 11:
return "SETTLING";
case 13:
case 14:
case 15:
return "RX";
case 16:
return "TXRX_SETTLING";
case 17:
return "RXFIFO_OVERFLOW";
case 18:
return "FSTXON";
case 19:
case 20:
return "TX";
case 21:
return "RXTX_SETTLING";
case 22:
return "TXFIFO_UNDERFLOW";
default:
return "UNKNOWN";
}
}
