Robocup Twente / Mbed 2 deprecated nRF24L01P_Hello_World

Making it work for the FRDM K64F

Dependencies:   mbed nRF24L01P

Fork of nRF24L01P_Hello_World by Owen Edwards

main.cpp@2:f32f686460b2, 2015-12-16 (annotated)

Committer:
ewoud
Date:
Wed Dec 16 22:35:59 2015 +0000
Revision:
2:f32f686460b2
Parent:
1:5be2682710c6 
Wireless serial communication between FRDM K64F boards using the nF24L01P chip

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
ewoud 2:f32f686460b2 6 nRF24L01P my_nrf24l01p(PTD6, PTD7, PTD5, PTD4, PTB12, PTC18); // mosi, miso, sck, csn, ce, irq
Owen 0:a51a6e7da590 7
ewoud 2:f32f686460b2 8 //DigitalOut myled1(LED1);
ewoud 2:f32f686460b2 9 //DigitalOut myled2(LED2);
Owen 0:a51a6e7da590 10
Owen 0:a51a6e7da590 11 int main() {
ewoud 2:f32f686460b2 12
Owen 0:a51a6e7da590 13 // The nRF24L01+ supports transfers from 1 to 32 bytes, but Sparkfun's
Owen 0:a51a6e7da590 14 // "Nordic Serial Interface Board" (http://www.sparkfun.com/products/9019)
Owen 0:a51a6e7da590 15 // only handles 4 byte transfers in the ATMega code.
Owen 0:a51a6e7da590 16 #define TRANSFER_SIZE 4
Owen 0:a51a6e7da590 17
Owen 0:a51a6e7da590 18 char txData[TRANSFER_SIZE], rxData[TRANSFER_SIZE];
Owen 0:a51a6e7da590 19 int txDataCnt = 0;
Owen 0:a51a6e7da590 20 int rxDataCnt = 0;
ewoud 2:f32f686460b2 21 my_nrf24l01p.setRfFrequency(2400);
Owen 0:a51a6e7da590 22 my_nrf24l01p.powerUp();
ewoud 2:f32f686460b2 23 //my_nrf24l01p.setRfFrequency(2400);
Owen 0:a51a6e7da590 24 // Display the (default) setup of the nRF24L01+ chip
Owen 0:a51a6e7da590 25 pc.printf( "nRF24L01+ Frequency : %d MHz\r\n", my_nrf24l01p.getRfFrequency() );
Owen 0:a51a6e7da590 26 pc.printf( "nRF24L01+ Output power : %d dBm\r\n", my_nrf24l01p.getRfOutputPower() );
Owen 0:a51a6e7da590 27 pc.printf( "nRF24L01+ Data Rate : %d kbps\r\n", my_nrf24l01p.getAirDataRate() );
Owen 0:a51a6e7da590 28 pc.printf( "nRF24L01+ TX Address : 0x%010llX\r\n", my_nrf24l01p.getTxAddress() );
Owen 0:a51a6e7da590 29 pc.printf( "nRF24L01+ RX Address : 0x%010llX\r\n", my_nrf24l01p.getRxAddress() );
Owen 0:a51a6e7da590 30
Owen 0:a51a6e7da590 31 pc.printf( "Type keys to test transfers:\r\n (transfers are grouped into %d characters)\r\n", TRANSFER_SIZE );
Owen 0:a51a6e7da590 32
Owen 0:a51a6e7da590 33 my_nrf24l01p.setTransferSize( TRANSFER_SIZE );
Owen 0:a51a6e7da590 34
Owen 0:a51a6e7da590 35 my_nrf24l01p.setReceiveMode();
Owen 0:a51a6e7da590 36 my_nrf24l01p.enable();
Owen 0:a51a6e7da590 37
Owen 0:a51a6e7da590 38 while (1) {
Owen 0:a51a6e7da590 39
Owen 0:a51a6e7da590 40 // If we've received anything over the host serial link...
Owen 0:a51a6e7da590 41 if ( pc.readable() ) {
Owen 0:a51a6e7da590 42
Owen 0:a51a6e7da590 43 // ...add it to the transmit buffer
Owen 0:a51a6e7da590 44 txData[txDataCnt++] = pc.getc();
ewoud 2:f32f686460b2 45 printf(txData);
ewoud 2:f32f686460b2 46 printf("\n\r");
Owen 0:a51a6e7da590 47 // If the transmit buffer is full
Owen 0:a51a6e7da590 48 if ( txDataCnt >= sizeof( txData ) ) {
ewoud 2:f32f686460b2 49 //myled1 = !myled1;
Owen 0:a51a6e7da590 50 // Send the transmitbuffer via the nRF24L01+
Owen 0:a51a6e7da590 51 my_nrf24l01p.write( NRF24L01P_PIPE_P0, txData, txDataCnt );
Owen 0:a51a6e7da590 52
Owen 0:a51a6e7da590 53 txDataCnt = 0;
ewoud 2:f32f686460b2 54 // Toggle LED1 (to help debug Host -> nRF24L01+ communication)
ewoud 2:f32f686460b2 55
Owen 0:a51a6e7da590 56 }
Owen 0:a51a6e7da590 57
ewoud 2:f32f686460b2 58
Owen 0:a51a6e7da590 59 }
Owen 0:a51a6e7da590 60
Owen 0:a51a6e7da590 61 // If we've received anything in the nRF24L01+...
Owen 0:a51a6e7da590 62 if ( my_nrf24l01p.readable() ) {
Owen 0:a51a6e7da590 63
Owen 0:a51a6e7da590 64 // ...read the data into the receive buffer
Owen 0:a51a6e7da590 65 rxDataCnt = my_nrf24l01p.read( NRF24L01P_PIPE_P0, rxData, sizeof( rxData ) );
Owen 0:a51a6e7da590 66
Owen 0:a51a6e7da590 67 // Display the receive buffer contents via the host serial link
Owen 0:a51a6e7da590 68 for ( int i = 0; rxDataCnt > 0; rxDataCnt--, i++ ) {
Owen 0:a51a6e7da590 69
Owen 0:a51a6e7da590 70 pc.putc( rxData[i] );
Owen 0:a51a6e7da590 71 }
Owen 0:a51a6e7da590 72
Owen 0:a51a6e7da590 73 // Toggle LED2 (to help debug nRF24L01+ -> Host communication)
ewoud 2:f32f686460b2 74 //myled2 = !myled2;
Owen 0:a51a6e7da590 75 }
Owen 0:a51a6e7da590 76 }
Owen 0:a51a6e7da590 77 }