Shailesh k s / nRF24L01P_Hello_World

testing

Dependencies:   mbed nRF24L01P

Fork of nRF24L01P_Hello_World by Owen Edwards

main.cpp@2:653be5496b69, 2015-03-31 (annotated)

Committer:
sksarm
Date:
Tue Mar 31 01:38:31 2015 +0000
Revision:
2:653be5496b69
Parent:
1:5be2682710c6 
initial step

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Owen 0:a51a6e7da590 1 #include "mbed.h"
Owen 0:a51a6e7da590 2 #include "nRF24L01P.h"
Owen 0:a51a6e7da590 3
Owen 0:a51a6e7da590 4 Serial pc(USBTX, USBRX); // tx, rx
Owen 0:a51a6e7da590 5
Owen 0:a51a6e7da590 6 nRF24L01P my_nrf24l01p(p5, p6, p7, p8, p9, p10); // mosi, miso, sck, csn, ce, irq
Owen 0:a51a6e7da590 7
Owen 0:a51a6e7da590 8 DigitalOut myled1(LED1);
Owen 0:a51a6e7da590 9 DigitalOut myled2(LED2);
Owen 0:a51a6e7da590 10
sksarm 2:653be5496b69 11 Timer t;
sksarm 2:653be5496b69 12
Owen 0:a51a6e7da590 13 int main() {
Owen 0:a51a6e7da590 14
Owen 0:a51a6e7da590 15 // The nRF24L01+ supports transfers from 1 to 32 bytes, but Sparkfun's
Owen 0:a51a6e7da590 16 // "Nordic Serial Interface Board" (http://www.sparkfun.com/products/9019)
Owen 0:a51a6e7da590 17 // only handles 4 byte transfers in the ATMega code.
Owen 0:a51a6e7da590 18 #define TRANSFER_SIZE 4
Owen 0:a51a6e7da590 19
Owen 0:a51a6e7da590 20 char txData[TRANSFER_SIZE], rxData[TRANSFER_SIZE];
Owen 0:a51a6e7da590 21 int txDataCnt = 0;
Owen 0:a51a6e7da590 22 int rxDataCnt = 0;
sksarm 2:653be5496b69 23 int tmpDataCnt = 0;
sksarm 2:653be5496b69 24 char tmpData[TRANSFER_SIZE+1];
Owen 0:a51a6e7da590 25
Owen 0:a51a6e7da590 26 my_nrf24l01p.powerUp();
Owen 0:a51a6e7da590 27
Owen 0:a51a6e7da590 28 // Display the (default) setup of the nRF24L01+ chip
Owen 0:a51a6e7da590 29 pc.printf( "nRF24L01+ Frequency : %d MHz\r\n", my_nrf24l01p.getRfFrequency() );
Owen 0:a51a6e7da590 30 pc.printf( "nRF24L01+ Output power : %d dBm\r\n", my_nrf24l01p.getRfOutputPower() );
Owen 0:a51a6e7da590 31 pc.printf( "nRF24L01+ Data Rate : %d kbps\r\n", my_nrf24l01p.getAirDataRate() );
Owen 0:a51a6e7da590 32 pc.printf( "nRF24L01+ TX Address : 0x%010llX\r\n", my_nrf24l01p.getTxAddress() );
Owen 0:a51a6e7da590 33 pc.printf( "nRF24L01+ RX Address : 0x%010llX\r\n", my_nrf24l01p.getRxAddress() );
Owen 0:a51a6e7da590 34
Owen 0:a51a6e7da590 35 pc.printf( "Type keys to test transfers:\r\n (transfers are grouped into %d characters)\r\n", TRANSFER_SIZE );
Owen 0:a51a6e7da590 36
Owen 0:a51a6e7da590 37 my_nrf24l01p.setTransferSize( TRANSFER_SIZE );
Owen 0:a51a6e7da590 38
Owen 0:a51a6e7da590 39 my_nrf24l01p.setReceiveMode();
Owen 0:a51a6e7da590 40 my_nrf24l01p.enable();
Owen 0:a51a6e7da590 41
Owen 0:a51a6e7da590 42 while (1) {
Owen 0:a51a6e7da590 43
Owen 0:a51a6e7da590 44 // If we've received anything over the host serial link...
Owen 0:a51a6e7da590 45 if ( pc.readable() ) {
Owen 0:a51a6e7da590 46
Owen 0:a51a6e7da590 47 // ...add it to the transmit buffer
Owen 0:a51a6e7da590 48 txData[txDataCnt++] = pc.getc();
Owen 0:a51a6e7da590 49
Owen 0:a51a6e7da590 50 // If the transmit buffer is full
Owen 0:a51a6e7da590 51 if ( txDataCnt >= sizeof( txData ) ) {
Owen 0:a51a6e7da590 52
sksarm 2:653be5496b69 53 t.start();
sksarm 2:653be5496b69 54
Owen 0:a51a6e7da590 55 // Send the transmitbuffer via the nRF24L01+
Owen 0:a51a6e7da590 56 my_nrf24l01p.write( NRF24L01P_PIPE_P0, txData, txDataCnt );
sksarm 2:653be5496b69 57
Owen 0:a51a6e7da590 58 txDataCnt = 0;
Owen 0:a51a6e7da590 59 }
Owen 0:a51a6e7da590 60
Owen 0:a51a6e7da590 61 // Toggle LED1 (to help debug Host -> nRF24L01+ communication)
Owen 0:a51a6e7da590 62 myled1 = !myled1;
Owen 0:a51a6e7da590 63 }
Owen 0:a51a6e7da590 64
Owen 0:a51a6e7da590 65 // If we've received anything in the nRF24L01+...
Owen 0:a51a6e7da590 66 if ( my_nrf24l01p.readable() ) {
sksarm 2:653be5496b69 67
Owen 0:a51a6e7da590 68 // ...read the data into the receive buffer
Owen 0:a51a6e7da590 69 rxDataCnt = my_nrf24l01p.read( NRF24L01P_PIPE_P0, rxData, sizeof( rxData ) );
Owen 0:a51a6e7da590 70
Owen 0:a51a6e7da590 71 // Display the receive buffer contents via the host serial link
Owen 0:a51a6e7da590 72 for ( int i = 0; rxDataCnt > 0; rxDataCnt--, i++ ) {
sksarm 2:653be5496b69 73
Owen 0:a51a6e7da590 74 pc.putc( rxData[i] );
sksarm 2:653be5496b69 75 tmpData[tmpDataCnt++] = rxData[i];
sksarm 2:653be5496b69 76 }
sksarm 2:653be5496b69 77
sksarm 2:653be5496b69 78 if ( tmpDataCnt >= TRANSFER_SIZE ) {
sksarm 2:653be5496b69 79 tmpData[TRANSFER_SIZE] = '\0';
sksarm 2:653be5496b69 80 //pc.printf( "Received data : %s \r\n", tmpData);
sksarm 2:653be5496b69 81 if (strcmp(tmpData, "ackn"))
sksarm 2:653be5496b69 82 {
sksarm 2:653be5496b69 83 tmpData[0] = 'a';
sksarm 2:653be5496b69 84 tmpData[1] = 'c';
sksarm 2:653be5496b69 85 tmpData[2] = 'k';
sksarm 2:653be5496b69 86 tmpData[3] = 'n';
sksarm 2:653be5496b69 87 //pc.printf( "Sending data : %s \r\n", "ackn");
sksarm 2:653be5496b69 88 my_nrf24l01p.write( NRF24L01P_PIPE_P0, tmpData, tmpDataCnt );
sksarm 2:653be5496b69 89 }
sksarm 2:653be5496b69 90 else
sksarm 2:653be5496b69 91 {
sksarm 2:653be5496b69 92 t.stop();
sksarm 2:653be5496b69 93 pc.printf("\r\nThe time taken was %f seconds \r\n", t.read());
sksarm 2:653be5496b69 94 t.reset();
sksarm 2:653be5496b69 95 }
sksarm 2:653be5496b69 96
sksarm 2:653be5496b69 97
sksarm 2:653be5496b69 98 tmpDataCnt = 0;
Owen 0:a51a6e7da590 99 }
Owen 0:a51a6e7da590 100
Owen 0:a51a6e7da590 101 // Toggle LED2 (to help debug nRF24L01+ -> Host communication)
Owen 0:a51a6e7da590 102 myled2 = !myled2;
Owen 0:a51a6e7da590 103 }
Owen 0:a51a6e7da590 104 }
Owen 0:a51a6e7da590 105 }