File content as of revision 6:d68db387a734:

/*
 * Simple DS1820 sensor demo
 *
 * Note: Don't forget to connect a 4.7k Ohm resistor 
 *       between the DS1820's data pin and the +3.3V pin
 *
 */
 
#include "mbed.h"
#include "DS1820.h"

Serial      pc(USBTX, USBRX);
DigitalOut  led(LED1);
DS1820      ds1820(PB_11);    // substitute p8 with actual mbed pin name connected to the DS1820 data pin    
float       temp = 0;
int         result = 0; 
 
int main() {
                             
    if(ds1820.begin()) {
        while(1) {
            ds1820.startConversion();  // start temperature conversion from analog to digital
            wait(1.0);                 // let DS1820 complete the temperature conversion 
            result = ds1820.read(temp); // read temperature from DS1820 and perform cyclic redundancy check (CRC)
            switch(result) {
            case 0:    // no errors -> 'temp' contains the value of measured temperature
                pc.printf("temp = %3.1f%cC\r\n", temp, 176);
                break;
            case 1:    // no sensor present -> 'temp' is not updated
                pc.printf("no sensor present\n\r");
                break;
            case 2:    // CRC error -> 'temp' is not updated
                pc.printf("CRC error\r\n");
            } 
            led = !led;
        }
    } else
        pc.printf("No DS1820 sensor found!\r\n");
}

// Array of sensors:

//int main() {
//    DS1820  ds1820[3] = {DS1820(PA_8), DS1820(PA_9), DS1820(PC_7)};
//
//    for(int i = 0; i < 3; i++) {
//        if(!ds1820[i].begin()) {
//            serial.printf("Cannot find sensor %d", i);
//        } else
//            ds1820[i].startConversion();
//    }   
//    wait(1.0);  // let DS1820s complete the temperature conversion    
//    while(1) {
//        for(int i = 0; i < 3; i++) {
//            if(ds1820[i].isPresent() {
//                serial.printf("temp%d = %3.1f\r\n", i, ds1820[i].read());     // read temperature
//                ds1820[i].startConversion();     // start temperature conversion
//            }
//        }
//        wait(1.0);  // let DS1820s complete the temperature conversion
//    }
//}               
//