EVGENIY BREYNER / Mbed 2 deprecated FROST

ddd

Dependencies:   mbed DS1820

main.cpp@0:9c03bf9526c4, 2019-12-11 (annotated)

Committer:
zbr2006
Date:
Wed Dec 11 13:58:25 2019 +0000
Revision:
0:9c03bf9526c4
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
zbr2006 0:9c03bf9526c4 1 #include "mbed.h"
zbr2006 0:9c03bf9526c4 2 #include "DS1820.h"
zbr2006 0:9c03bf9526c4 3
zbr2006 0:9c03bf9526c4 4 Serial pc(USBTX, USBRX);
zbr2006 0:9c03bf9526c4 5 DigitalOut led(LED1);
zbr2006 0:9c03bf9526c4 6 DS1820 ds1820(D8); // substitute D8 with actual mbed pin name connected to 1-wire bus
zbr2006 0:9c03bf9526c4 7 float temp = 0;
zbr2006 0:9c03bf9526c4 8 int result = 0;
zbr2006 0:9c03bf9526c4 9
zbr2006 0:9c03bf9526c4 10 int main()
zbr2006 0:9c03bf9526c4 11 {
zbr2006 0:9c03bf9526c4 12 pc.printf("\r\n--Starting--\r\n");
zbr2006 0:9c03bf9526c4 13 if (ds1820.begin()) {
zbr2006 0:9c03bf9526c4 14 while (1) {
zbr2006 0:9c03bf9526c4 15 ds1820.startConversion(); // start temperature conversion from analog to digital
zbr2006 0:9c03bf9526c4 16 wait(1.0); // let DS1820 complete the temperature conversion
zbr2006 0:9c03bf9526c4 17 result = ds1820.read(temp); // read temperature from DS1820 and perform cyclic redundancy check (CRC)
zbr2006 0:9c03bf9526c4 18 switch (result) {
zbr2006 0:9c03bf9526c4 19 case 0: // no errors -> 'temp' contains the value of measured temperature
zbr2006 0:9c03bf9526c4 20 pc.printf("temp = %3.1f%cC\r\n", temp, 176);
zbr2006 0:9c03bf9526c4 21 break;
zbr2006 0:9c03bf9526c4 22
zbr2006 0:9c03bf9526c4 23 case 1: // no sensor present -> 'temp' is not updated
zbr2006 0:9c03bf9526c4 24 pc.printf("no sensor present\n\r");
zbr2006 0:9c03bf9526c4 25 break;
zbr2006 0:9c03bf9526c4 26
zbr2006 0:9c03bf9526c4 27 case 2: // CRC error -> 'temp' is not updated
zbr2006 0:9c03bf9526c4 28 pc.printf("CRC error\r\n");
zbr2006 0:9c03bf9526c4 29 }
zbr2006 0:9c03bf9526c4 30
zbr2006 0:9c03bf9526c4 31 led = !led;
zbr2006 0:9c03bf9526c4 32 }
zbr2006 0:9c03bf9526c4 33 }
zbr2006 0:9c03bf9526c4 34 else
zbr2006 0:9c03bf9526c4 35 pc.printf("No DS1820 sensor found!\r\n");
zbr2006 0:9c03bf9526c4 36 }