ibrahim momoh / Mbed 2 deprecated Group10_slave

this is 1/2 of the whole project, this is the part of the slave board that has all the sensors on it, controls the rasberri pi through GPIO, gets sensor data, and sends alert messages through the nrf RF transceiver module to the master board

Dependencies:   HCSR04 mbed nRF24L01P

Fork of nRF24L01P_Hello_World by Owen Edwards

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:fb75a6c7a0de
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 }