main.cpp

00001 /*
00002 * OneWireCRC/OneWireThermometer demo.
00003 *
00004 * Copyright (C) <2009> Petras Saduikis <petras@petras.co.uk>
00005 *
00006 * This file is part of OneWireCRC/OneWireThermometer.
00007 *
00008 * OneWireCRC/OneWireThermometer is free software: you can redistribute it and/or modify
00009 * it under the terms of the GNU General Public License as published by
00010 * the Free Software Foundation, either version 3 of the License, or
00011 * (at your option) any later version.
00012 * 
00013 * OneWireCRC/OneWireThermometer is distributed in the hope that it will be useful,
00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00016 * GNU General Public License for more details.
00017 *
00018 * You should have received a copy of the GNU General Public License
00019 * along with OneWireCRC/OneWireThermometer0.  If not, see <http://www.gnu.org/licenses/>.
00020 */
00021 
00022 ////////////////////////////////////////////////////////////////////
00023 // Test code to read temperature from a Maxim DS18B20 or DS18S20
00024 // 1-wire device 
00025 ////////////////////////////////////////////////////////////////////
00026 
00027 #include <mbed.h>
00028 #include "DS18S20.h"
00029 #include "DS18B20.h"
00030 #include "OneWireDefs.h"
00031 
00032 //#define THERMOMETER DS18S20
00033 #define THERMOMETER DS18B20
00034 
00035 int main()
00036 {
00037     // device( crcOn, useAddress, parasitic, mbed pin )
00038     THERMOMETER device(true, true, false, p25);
00039     
00040     while (!device.initialize());    // keep calling until it works
00041     
00042     while (true)
00043     {
00044         // changing the resolutions only affects the DS18B20. The DS18S20 is fixed.
00045         device.setResolution(nineBit);
00046         device.readTemperature(); 
00047         wait(2);
00048         device.setResolution(tenBit);
00049         device.readTemperature(); 
00050         wait(2);
00051         device.setResolution(elevenBit);
00052         device.readTemperature(); 
00053         wait(2);
00054         device.setResolution(twelveBit);
00055         device.readTemperature(); 
00056         wait(2);
00057     }
00058      
00059     return EXIT_SUCCESS;
00060 }