main.cpp

00001 #include "mbed.h"
00002 #include "nRF24L01P.h"
00003 
00004 Serial pc(USBTX, USBRX); // tx, rx
00005 
00006 nRF24L01P my_nrf24l01p(PE_15, PE_14, PE_13, PE_12, PE_10, PE_11);    // mosi, miso, sck, csn, ce, irq
00007 
00008 DigitalOut myled1(LED1);
00009 DigitalOut myled2(LED2);
00010 
00011 int main() {
00012 
00013 // The nRF24L01+ supports transfers from 1 to 32 bytes, but Sparkfun's
00014 //  "Nordic Serial Interface Board" (http://www.sparkfun.com/products/9019)
00015 //  only handles 4 byte transfers in the ATMega code.
00016 #define TRANSFER_SIZE   4
00017 
00018     char txData[TRANSFER_SIZE], rxData[TRANSFER_SIZE];
00019     int txDataCnt = 0;
00020     int rxDataCnt = 0;
00021 
00022     my_nrf24l01p.powerUp();
00023 
00024     // Display the (default) setup of the nRF24L01+ chip
00025     pc.printf( "nRF24L01+ Frequency    : %d MHz\r\n",  my_nrf24l01p.getRfFrequency() );
00026     pc.printf( "nRF24L01+ Output power : %d dBm\r\n",  my_nrf24l01p.getRfOutputPower() );
00027     pc.printf( "nRF24L01+ Data Rate    : %d kbps\r\n", my_nrf24l01p.getAirDataRate() );
00028     pc.printf( "nRF24L01+ TX Address   : 0x%010llX\r\n", my_nrf24l01p.getTxAddress() );
00029     pc.printf( "nRF24L01+ RX Address   : 0x%010llX\r\n", my_nrf24l01p.getRxAddress() );
00030 
00031     pc.printf( "Type keys to test transfers:\r\n  (transfers are grouped into %d characters)\r\n", TRANSFER_SIZE );
00032 
00033     my_nrf24l01p.setTransferSize( TRANSFER_SIZE );
00034 
00035     my_nrf24l01p.setReceiveMode();
00036     my_nrf24l01p.enable();
00037 
00038     while (1) {
00039 
00040         // If we've received anything over the host serial link...
00041         if ( pc.readable() ) {
00042 
00043             // ...add it to the transmit buffer
00044             txData[txDataCnt++] = pc.getc();
00045 
00046             // If the transmit buffer is full
00047             if ( txDataCnt >= sizeof( txData ) ) {
00048 
00049                 // Send the transmitbuffer via the nRF24L01+
00050                 my_nrf24l01p.write( NRF24L01P_PIPE_P0, txData, txDataCnt );
00051 
00052                 txDataCnt = 0;
00053             }
00054 
00055             // Toggle LED1 (to help debug Host -> nRF24L01+ communication)
00056             myled1 = !myled1;
00057         }
00058 
00059         // If we've received anything in the nRF24L01+...
00060         if ( my_nrf24l01p.readable() ) {
00061 
00062             // ...read the data into the receive buffer
00063             rxDataCnt = my_nrf24l01p.read( NRF24L01P_PIPE_P0, rxData, sizeof( rxData ) );
00064 
00065             // Display the receive buffer contents via the host serial link
00066             for ( int i = 0; rxDataCnt > 0; rxDataCnt--, i++ ) {
00067 
00068                 pc.putc( rxData[i] );
00069             }
00070 
00071             // Toggle LED2 (to help debug nRF24L01+ -> Host communication)
00072             myled2 = !myled2;
00073         }
00074     }
00075 }