void radio_getReceivedFrame(uint8_t* bufRead,
uint8_t* lenRead,
uint8_t maxBufLen,
int8_t* rssi,
uint8_t* lqi,
uint8_t* crc) {
// read the received packet from the RXFIFO
radio_spiReadRxFifo(&radio_vars.radioStatusByte, bufRead, lenRead, maxBufLen);
// On reception, because of PCKTCTRL.APPEND_STATUS enabled,
// we receive :
// - [1B] the rssi
// - [1B] whether CRC checked (bit 7) and LQI (bit 6-0)
*rssi = *(bufRead+*lenRead-2);
*crc = ((*(bufRead+*lenRead-1))&0x80)>>7;
*lqi = (*(bufRead+*lenRead-1))&0x7f;
}
void radio_getReceivedFrame(uint8_t* bufRead,
uint8_t* lenRead,
uint8_t maxBufLen,
int8_t* rssi,
uint8_t* lqi,
uint8_t* crc) {
// read the received packet from the RXFIFO
radio_spiReadRxFifo(&radio_vars.radioStatusByte, bufRead, lenRead, maxBufLen);
// On reception, when MODEMCTRL0.AUTOCRC is set, the CC2420 replaces the
// received CRC by:
// - [1B] the rssi, a signed value. The actual value in dBm is that - 45.
// - [1B] whether CRC checked (bit 7) and LQI (bit 6-0)
*rssi = *(bufRead+*lenRead-2);
*rssi -= 45;
*crc = ((*(bufRead+*lenRead-1))&0x80)>>7;
*lqi = (*(bufRead+*lenRead-1))&0x7f;
}
void radio_getReceivedFrame(uint8_t* pBufRead,
uint8_t* pLenRead,
uint8_t maxBufLen,
int8_t* pRssi,
uint8_t* pLqi,
uint8_t* pCrc) {
uint8_t temp_reg_value;
//===== crc
temp_reg_value = radio_spiReadReg(RG_PHY_RSSI);
*pCrc = (temp_reg_value & 0x80)>>7; // msb is whether packet passed CRC
//===== rssi
// as per section 8.4.3 of the AT86RF231, the RSSI is calculate as:
// -91 + ED [dBm]
temp_reg_value = radio_spiReadReg(RG_PHY_ED_LEVEL);
*pRssi = -91 + temp_reg_value;
//===== packet
radio_spiReadRxFifo(pBufRead,
pLenRead,
maxBufLen,
pLqi);
}
