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
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?
User | Revision | Line number | New 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 | } |