Nigel Leitzell / Mbed 2 deprecated BaseBoard

This is a simple home automation system which communicates with a Bluetooth app to control home systems such as HVAC and lighting. This was done for El-Sharkaway's ECE595 Class

Dependencies:   DHT EthernetInterface M2XStreamClient Servo jsonlite mbed-rtos mbed nRF24L01P

Fork of nRF24L01P_Hello_World by Owen Edwards

main.cpp@0:a51a6e7da590, 2011-01-19 (annotated)

Committer:
Owen
Date:
Wed Jan 19 23:26:02 2011 +0000
Revision:
0:a51a6e7da590
Child:
1:5be2682710c6
Initial revision.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Owen 0:a51a6e7da590 1 /**
Owen 0:a51a6e7da590 2 * @file main.cpp (nRF24L01P_Hello_World)
Owen 0:a51a6e7da590 3 *
Owen 0:a51a6e7da590 4 * @author Owen Edwards
Owen 0:a51a6e7da590 5 *
Owen 0:a51a6e7da590 6 * @section LICENSE
Owen 0:a51a6e7da590 7 *
Owen 0:a51a6e7da590 8 * Copyright (c) 2010 Owen Edwards
Owen 0:a51a6e7da590 9 *
Owen 0:a51a6e7da590 10 * This program is free software: you can redistribute it and/or modify
Owen 0:a51a6e7da590 11 * it under the terms of the GNU General Public License as published by
Owen 0:a51a6e7da590 12 * the Free Software Foundation, either version 3 of the License, or
Owen 0:a51a6e7da590 13 * (at your option) any later version.
Owen 0:a51a6e7da590 14 *
Owen 0:a51a6e7da590 15 * This program is distributed in the hope that it will be useful,
Owen 0:a51a6e7da590 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
Owen 0:a51a6e7da590 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Owen 0:a51a6e7da590 18 * GNU General Public License for more details.
Owen 0:a51a6e7da590 19 *
Owen 0:a51a6e7da590 20 * You should have received a copy of the GNU General Public License
Owen 0:a51a6e7da590 21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
Owen 0:a51a6e7da590 22 *
Owen 0:a51a6e7da590 23 * The above copyright notice and this permission notice shall be included in
Owen 0:a51a6e7da590 24 * all copies or substantial portions of the Software.
Owen 0:a51a6e7da590 25 *
Owen 0:a51a6e7da590 26 * @section DESCRIPTION
Owen 0:a51a6e7da590 27 *
Owen 0:a51a6e7da590 28 * Demo the nRF24L01+ Library
Owen 0:a51a6e7da590 29 *
Owen 0:a51a6e7da590 30 * Datasheet:
Owen 0:a51a6e7da590 31 *
Owen 0:a51a6e7da590 32 * http://www.nordicsemi.no/files/Product/data_sheet/nRF24L01P_Product_Specification_1_0.pdf
Owen 0:a51a6e7da590 33 */
Owen 0:a51a6e7da590 34
Owen 0:a51a6e7da590 35 #include "mbed.h"
Owen 0:a51a6e7da590 36 #include "nRF24L01P.h"
Owen 0:a51a6e7da590 37
Owen 0:a51a6e7da590 38 Serial pc(USBTX, USBRX); // tx, rx
Owen 0:a51a6e7da590 39
Owen 0:a51a6e7da590 40 nRF24L01P my_nrf24l01p(p5, p6, p7, p8, p9, p10); // mosi, miso, sck, csn, ce, irq
Owen 0:a51a6e7da590 41
Owen 0:a51a6e7da590 42 DigitalOut myled1(LED1);
Owen 0:a51a6e7da590 43 DigitalOut myled2(LED2);
Owen 0:a51a6e7da590 44
Owen 0:a51a6e7da590 45 int main() {
Owen 0:a51a6e7da590 46
Owen 0:a51a6e7da590 47 //
Owen 0:a51a6e7da590 48 // The nRF24L01+ supports transfers from 1 to 32 bytes, but Sparkfun's
Owen 0:a51a6e7da590 49 // "Nordic Serial Interface Board" (http://www.sparkfun.com/products/9019)
Owen 0:a51a6e7da590 50 // only handles 4 byte transfers in the ATMega code.
Owen 0:a51a6e7da590 51 //
Owen 0:a51a6e7da590 52 #define TRANSFER_SIZE 4
Owen 0:a51a6e7da590 53
Owen 0:a51a6e7da590 54 char txData[TRANSFER_SIZE], rxData[TRANSFER_SIZE];
Owen 0:a51a6e7da590 55 int txDataCnt = 0;
Owen 0:a51a6e7da590 56 int rxDataCnt = 0;
Owen 0:a51a6e7da590 57
Owen 0:a51a6e7da590 58 my_nrf24l01p.powerUp();
Owen 0:a51a6e7da590 59
Owen 0:a51a6e7da590 60 //
Owen 0:a51a6e7da590 61 // Display the (default) setup of the nRF24L01+ chip
Owen 0:a51a6e7da590 62 //
Owen 0:a51a6e7da590 63 pc.printf( "nRF24L01+ Frequency : %d MHz\r\n", my_nrf24l01p.getRfFrequency() );
Owen 0:a51a6e7da590 64 pc.printf( "nRF24L01+ Output power : %d dBm\r\n", my_nrf24l01p.getRfOutputPower() );
Owen 0:a51a6e7da590 65 pc.printf( "nRF24L01+ Data Rate : %d kbps\r\n", my_nrf24l01p.getAirDataRate() );
Owen 0:a51a6e7da590 66 pc.printf( "nRF24L01+ TX Address : 0x%010llX\r\n", my_nrf24l01p.getTxAddress() );
Owen 0:a51a6e7da590 67 pc.printf( "nRF24L01+ RX Address : 0x%010llX\r\n", my_nrf24l01p.getRxAddress() );
Owen 0:a51a6e7da590 68
Owen 0:a51a6e7da590 69 pc.printf( "Type keys to test transfers:\r\n (transfers are grouped into %d characters)\r\n", TRANSFER_SIZE );
Owen 0:a51a6e7da590 70
Owen 0:a51a6e7da590 71 my_nrf24l01p.setTransferSize( TRANSFER_SIZE );
Owen 0:a51a6e7da590 72
Owen 0:a51a6e7da590 73 my_nrf24l01p.setReceiveMode();
Owen 0:a51a6e7da590 74 my_nrf24l01p.enable();
Owen 0:a51a6e7da590 75
Owen 0:a51a6e7da590 76 while (1) {
Owen 0:a51a6e7da590 77
Owen 0:a51a6e7da590 78 //
Owen 0:a51a6e7da590 79 // If we've received anything over the host serial link...
Owen 0:a51a6e7da590 80 //
Owen 0:a51a6e7da590 81 if ( pc.readable() ) {
Owen 0:a51a6e7da590 82
Owen 0:a51a6e7da590 83 //
Owen 0:a51a6e7da590 84 // ...add it to the transmit buffer
Owen 0:a51a6e7da590 85 //
Owen 0:a51a6e7da590 86 txData[txDataCnt++] = pc.getc();
Owen 0:a51a6e7da590 87
Owen 0:a51a6e7da590 88 //
Owen 0:a51a6e7da590 89 // If the transmit buffer is full
Owen 0:a51a6e7da590 90 //
Owen 0:a51a6e7da590 91 if ( txDataCnt >= sizeof( txData ) ) {
Owen 0:a51a6e7da590 92
Owen 0:a51a6e7da590 93 //
Owen 0:a51a6e7da590 94 // Send the transmitbuffer via the nRF24L01+
Owen 0:a51a6e7da590 95 //
Owen 0:a51a6e7da590 96 my_nrf24l01p.write( NRF24L01P_PIPE_P0, txData, txDataCnt );
Owen 0:a51a6e7da590 97
Owen 0:a51a6e7da590 98 txDataCnt = 0;
Owen 0:a51a6e7da590 99
Owen 0:a51a6e7da590 100 }
Owen 0:a51a6e7da590 101
Owen 0:a51a6e7da590 102 //
Owen 0:a51a6e7da590 103 // Toggle LED1 (to help debug Host -> nRF24L01+ communication)
Owen 0:a51a6e7da590 104 //
Owen 0:a51a6e7da590 105 myled1 = !myled1;
Owen 0:a51a6e7da590 106
Owen 0:a51a6e7da590 107 }
Owen 0:a51a6e7da590 108
Owen 0:a51a6e7da590 109 //
Owen 0:a51a6e7da590 110 // If we've received anything in the nRF24L01+...
Owen 0:a51a6e7da590 111 //
Owen 0:a51a6e7da590 112 if ( my_nrf24l01p.readable() ) {
Owen 0:a51a6e7da590 113
Owen 0:a51a6e7da590 114 //
Owen 0:a51a6e7da590 115 // ...read the data into the receive buffer
Owen 0:a51a6e7da590 116 //
Owen 0:a51a6e7da590 117 rxDataCnt = my_nrf24l01p.read( NRF24L01P_PIPE_P0, rxData, sizeof( rxData ) );
Owen 0:a51a6e7da590 118
Owen 0:a51a6e7da590 119 //
Owen 0:a51a6e7da590 120 // Display the receive buffer contents via the host serial link
Owen 0:a51a6e7da590 121 //
Owen 0:a51a6e7da590 122 for ( int i = 0; rxDataCnt > 0; rxDataCnt--, i++ ) {
Owen 0:a51a6e7da590 123
Owen 0:a51a6e7da590 124 pc.putc( rxData[i] );
Owen 0:a51a6e7da590 125
Owen 0:a51a6e7da590 126 }
Owen 0:a51a6e7da590 127
Owen 0:a51a6e7da590 128 //
Owen 0:a51a6e7da590 129 // Toggle LED2 (to help debug nRF24L01+ -> Host communication)
Owen 0:a51a6e7da590 130 //
Owen 0:a51a6e7da590 131 myled2 = !myled2;
Owen 0:a51a6e7da590 132
Owen 0:a51a6e7da590 133 }
Owen 0:a51a6e7da590 134 }
Owen 0:a51a6e7da590 135 }