Wouter van Kleunen / Mbed OS Saxion_nRF24L01P_Hello_World

nRF24L01P Hello World example for mbed 6

Dependencies:   nRF24L01P

main.cpp@1:5be2682710c6, 2011-01-19 (annotated)

Committer:
Owen
Date:
Wed Jan 19 23:53:19 2011 +0000
Revision:
1:5be2682710c6
Parent:
0:a51a6e7da590
Child:
2:d7d36199d4e4
Simplified the comments.

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
Owen 0:a51a6e7da590 11 int main() {
Owen 0:a51a6e7da590 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;
Owen 0:a51a6e7da590 21
Owen 0:a51a6e7da590 22 my_nrf24l01p.powerUp();
Owen 0:a51a6e7da590 23
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();
Owen 0:a51a6e7da590 45
Owen 0:a51a6e7da590 46 // If the transmit buffer is full
Owen 0:a51a6e7da590 47 if ( txDataCnt >= sizeof( txData ) ) {
Owen 0:a51a6e7da590 48
Owen 0:a51a6e7da590 49 // Send the transmitbuffer via the nRF24L01+
Owen 0:a51a6e7da590 50 my_nrf24l01p.write( NRF24L01P_PIPE_P0, txData, txDataCnt );
Owen 0:a51a6e7da590 51
Owen 0:a51a6e7da590 52 txDataCnt = 0;
Owen 0:a51a6e7da590 53 }
Owen 0:a51a6e7da590 54
Owen 0:a51a6e7da590 55 // Toggle LED1 (to help debug Host -> nRF24L01+ communication)
Owen 0:a51a6e7da590 56 myled1 = !myled1;
Owen 0:a51a6e7da590 57 }
Owen 0:a51a6e7da590 58
Owen 0:a51a6e7da590 59 // If we've received anything in the nRF24L01+...
Owen 0:a51a6e7da590 60 if ( my_nrf24l01p.readable() ) {
Owen 0:a51a6e7da590 61
Owen 0:a51a6e7da590 62 // ...read the data into the receive buffer
Owen 0:a51a6e7da590 63 rxDataCnt = my_nrf24l01p.read( NRF24L01P_PIPE_P0, rxData, sizeof( rxData ) );
Owen 0:a51a6e7da590 64
Owen 0:a51a6e7da590 65 // Display the receive buffer contents via the host serial link
Owen 0:a51a6e7da590 66 for ( int i = 0; rxDataCnt > 0; rxDataCnt--, i++ ) {
Owen 0:a51a6e7da590 67
Owen 0:a51a6e7da590 68 pc.putc( rxData[i] );
Owen 0:a51a6e7da590 69 }
Owen 0:a51a6e7da590 70
Owen 0:a51a6e7da590 71 // Toggle LED2 (to help debug nRF24L01+ -> Host communication)
Owen 0:a51a6e7da590 72 myled2 = !myled2;
Owen 0:a51a6e7da590 73 }
Owen 0:a51a6e7da590 74 }
Owen 0:a51a6e7da590 75 }