//Set up nRF24L01 as a transmitter, does not actually send the data,
//(need to call tx_data_nRF24L01() for that)
uint8_t config_tx_nRF24L01(void)
{
cbi(L01_PORT, L01_CE); //Go into standby mode
send_command(0x20, 0x7C); //16 bit CRC enabled, be a transmitter
send_command(0x21, 0x00); //Disable auto acknowledge on all pipes
send_command(0x24, 0x00); //Disable auto-retransmit
send_command(0x23, 0x03); //Set address width to 5bytes (default, not really needed)
send_command(0x26, 0x07); //Air data rate 1Mbit, 0dBm, Setup LNA
send_command(0x25, 0x02); //RF Channel 2 (default, not really needed)
data_array[0] = 0xE7;
data_array[1] = 0xE7;
data_array[2] = 0xE7;
data_array[3] = 0xE7;
data_array[4] = 0xE7;
tx_send_payload(0x30, 5); //Set TX address
send_command(0x20, 0x7A); //Power up, be a transmitter
return(send_byte(0xFF));
}
//This sends out the data stored in the data_array
//data_array must be setup before calling this function
void tx_data_nRF24L01(void)
{
send_command(0x27, 0x7E); //Clear any interrupts
send_command(0x20, 0x7A); //Power up and be a transmitter
send_byte(0xE1); //Clear TX Fifo
tx_send_payload(0xA0, 4); //Clock in 4 byte payload of data_array
sbi(L01_PORT, L01_CE); //Pulse CE to start transmission
delay_ms(1);
cbi(L01_PORT, L01_CE);
}
//////////////////////
// tx_send_packet: transmit a data packet
//
// length: length of raw packet including header
// pkt: pointer to packet
//
void tx_send_pkt(pkt_t *pkt, uint8_t length) {
log_packet('T', pkt, length);
led_on();
set_tx_packet_length(length);
tx_send_payload(0x80 + REG_FIFO, length, (uint8_t *)pkt); // Clock out payload
// Set TXON bit to start the tx cycle
tx_start();
led_off(); led_on(); // toggle to note time to here
tx_packet_count++;
// wait for the packet transmission to complete
// per p.81 TXON is "Automatically cleared in FIFO mode once the packet is sent"
// we spin for about 10ms here...
while (!rf_interrupt()) {;}
rf_read_status();
// TODO: consider a better place to restore
// this one wastes time going back into rx mode during long prints
set_rx_mode();
led_off();
}
