void rf_set_rx(RF_RX_INFO *pRRI, uint8_t channel)
{
rf_flush_rx_fifo();
rf_set_channel(channel);
rfSettings.pRxInfo = pRRI;
MRF_FSM_RESET();
}
void rf_polling_rx_on(void)
{
rf_flush_rx_fifo();
rfSettings.receiveOn = true;
rx_ready = 1;
mrf_write_short(BBREG1, 0x00);
// TODO: Paul Gurniak, not sure if there is anything different between these?
}
/**********************************************************
* set the radio into "normal" mode (buffered TXFIFO) and go into (data) receive */
void rf_data_mode() {
#ifdef RADIO_PRIORITY_CEILING
nrk_sem_pend(radio_sem);
#endif
cc2420Strobe(CC2420_SRFOFF); //stop radio
cc2420WriteReg(CC2420_MDMCTRL1, 0x0500); // default MDMCTRL1 value
cc2420WriteReg(CC2420_DACTST, 0); // default value
rf_flush_rx_fifo();
#ifdef RADIO_PRIORITY_CEILING
nrk_sem_post(radio_sem);
#endif
}
/**********************************************************
* set the radio into "normal" mode (buffered TXFIFO) and go into (data) receive */
void rf_data_mode() {
#ifdef RADIO_PRIORITY_CEILING
nrk_sem_pend(radio_sem);
#endif
FASTSPI_STROBE(CC2420_SRFOFF); //stop radio
FASTSPI_SETREG(CC2420_MDMCTRL1, 0x0500); // default MDMCTRL1 value
FASTSPI_SETREG(CC2420_DACTST, 0); // default value
rf_flush_rx_fifo();
#ifdef RADIO_PRIORITY_CEILING
nrk_sem_post(radio_sem);
#endif
}
void rf_test_mode()
{
#ifdef RADIO_PRIORITY_CEILING
nrk_sem_pend(radio_sem);
#endif
FASTSPI_STROBE(CC2420_SRFOFF); //stop radio
// NOTE ON SETTING CC2420_MDMCTRL1
//
// RF studio" uses TX_MODE=3 (CC2420_MDMCTRL1=0x050C)
// to send an unmodulated carrier; data sheet says TX_MODE
// can be 2 or 3. So it should not matter...
// HOWEVER, using (TX_MODE=3) sometimes causes problems when
// going back to "data" mode!
FASTSPI_SETREG(CC2420_MDMCTRL1, 0x0508); // MDMCTRL1 with TX_MODE=2
FASTSPI_SETREG(CC2420_DACTST, 0x1800); // send unmodulated carrier
rf_flush_rx_fifo();
#ifdef RADIO_PRIORITY_CEILING
nrk_sem_post(radio_sem);
#endif
}
/**********************************************************
* Put the radio in serial TX mode, where data is sampled from the FIFO
* pin to send after SFD, and timing is done using FIFOP
* use rf_carrier_on() to start, set FIFO to first bit, then wait for it
* to go up and down, then set next bit etc.
* NOTE: You must set the FIFO pin to output mode in order to do this!
* This can be undone by calling rf_data_mode()
*/
void rf_tx_set_serial()
{
FASTSPI_SETREG(CC2420_MDMCTRL1, 0x0504); // set TXMODE to 1
rf_flush_rx_fifo();
}
/**********************************************************
* Set the radio into serial unbuffered RX mode
* RX data is received through sampling the FIFO pin, timing is done using FIFOP
* Use rf_rx_on() to start rcv, then wait for SFD / FIFOP. Sample during each high edge of FIFOP
* This can be undone by using rf_data_mode()
*/
void rf_rx_set_serial()
{
FASTSPI_STROBE(CC2420_SRFOFF); // stop radio
FASTSPI_SETREG(CC2420_MDMCTRL1, 0x0501); // Set RX_MODE to 1
rf_flush_rx_fifo();
}
/**********************************************************
* Put the radio in serial TX mode, where data is sampled from the FIFO
* pin to send after SFD, and timing is done using FIFOP
* use rf_carrier_on() to start, set FIFO to first bit, then wait for it
* to go up and down, then set next bit etc.
* NOTE: You must set the FIFO pin to output mode in order to do this!
* This can be undone by calling rf_data_mode()
*/
void rf_tx_set_serial()
{
cc2420WriteReg(CC2420_MDMCTRL1, 0x0504); // set TXMODE to 1
rf_flush_rx_fifo();
}
/**********************************************************
* Set the radio into serial unbuffered RX mode
* RX data is received through sampling the FIFO pin, timing is done using FIFOP
* Use rf_rx_on() to start rcv, then wait for SFD / FIFOP. Sample during each high edge of FIFOP
* This can be undone by using rf_data_mode()
*/
void rf_rx_set_serial()
{
cc2420Strobe(CC2420_SRFOFF); // stop radio
cc2420WriteReg(CC2420_MDMCTRL1, 0x0501); // Set RX_MODE to 1
rf_flush_rx_fifo();
}