PRF/dBm < RSSI_BASE_VAL
PRF/dBm = RSSI_BASE_VAL + 3 × (PHY_RSSI - 1)
.PRF/dBm >= RSSI_BASE_VAL + 81
There are the following two methods defined:
rssi = trx_bit_read(SR_RSSI); proc_rssi(rssi);
/* TRX_IRQ_RX_START occurs here */ rssi = trx_bit_read(SR_RSSI); proc_rssi(rssi); /* TRX_IRQ_TRX_END occurs here */