Whitworth-EN173-Resources / Mbed 2 deprecated DS1820_HelloWorld

Example program for the DS1820 library. It searches for connected devices, reports their addresses, and then displays their temperatures.

Dependencies:   DS1820 mbed

Fork of DS1820_HelloWorld by Erik -

main.cpp@5:a870fb672587, 2017-03-09 (annotated)

Committer:
JLarkin
Date:
Thu Mar 09 04:04:16 2017 +0000
Revision:
5:a870fb672587
Parent:
3:f483abe4bc57 
Example DS1820 program reports device IDs and then reports temps

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Sissors 0:e069f9f26768 1 #define MULTIPLE_PROBES
JLarkin 5:a870fb672587 2 #define DATA_PIN p25
Sissors 0:e069f9f26768 3
Sissors 0:e069f9f26768 4
Sissors 0:e069f9f26768 5 #ifdef MULTIPLE_PROBES
Sissors 0:e069f9f26768 6
Sissors 0:e069f9f26768 7 #include "mbed.h"
Sissors 0:e069f9f26768 8 #include "DS1820.h"
Sissors 0:e069f9f26768 9
Sissors 0:e069f9f26768 10 #define MAX_PROBES 16
Sissors 0:e069f9f26768 11
Sissors 0:e069f9f26768 12 DS1820* probe[MAX_PROBES];
Sissors 0:e069f9f26768 13
Sissors 0:e069f9f26768 14 int main() {
Sissors 0:e069f9f26768 15 // Initialize the probe array to DS1820 objects
Sissors 0:e069f9f26768 16 int num_devices = 0;
Sissors 0:e069f9f26768 17 while(DS1820::unassignedProbe(DATA_PIN)) {
Sissors 0:e069f9f26768 18 probe[num_devices] = new DS1820(DATA_PIN);
Sissors 0:e069f9f26768 19 num_devices++;
Sissors 0:e069f9f26768 20 if (num_devices == MAX_PROBES)
Sissors 0:e069f9f26768 21 break;
Sissors 0:e069f9f26768 22 }
Sissors 0:e069f9f26768 23
JLarkin 5:a870fb672587 24 printf("Found %d device(s)\r\n", num_devices);
JLarkin 5:a870fb672587 25 unsigned long long fullName;
JLarkin 5:a870fb672587 26 unsigned int firstName;
JLarkin 5:a870fb672587 27 unsigned int lastName;
JLarkin 5:a870fb672587 28 for (int i = 0; i<num_devices; i++) {
JLarkin 5:a870fb672587 29 fullName = probe[i]->whoAmI();
JLarkin 5:a870fb672587 30 firstName = fullName >> 32;
JLarkin 5:a870fb672587 31 lastName = fullName;
JLarkin 5:a870fb672587 32 printf("\tID %d = %x%x\r\n", i, firstName, lastName);
JLarkin 5:a870fb672587 33 }
JLarkin 5:a870fb672587 34 printf("\n");
JLarkin 5:a870fb672587 35
Sissors 0:e069f9f26768 36 while(1) {
Sissors 0:e069f9f26768 37 probe[0]->convertTemperature(true, DS1820::all_devices); //Start temperature conversion, wait until ready
Sissors 0:e069f9f26768 38 for (int i = 0; i<num_devices; i++)
JLarkin 5:a870fb672587 39 printf("%3.1f C\t", i, probe[i]->temperature());
Sissors 0:e069f9f26768 40 printf("\r\n");
Sissors 0:e069f9f26768 41 wait(1);
Sissors 0:e069f9f26768 42 }
Sissors 0:e069f9f26768 43
Sissors 0:e069f9f26768 44 }
Sissors 0:e069f9f26768 45
Sissors 0:e069f9f26768 46 #else
Sissors 0:e069f9f26768 47 #include "mbed.h"
Sissors 0:e069f9f26768 48 #include "DS1820.h"
Sissors 0:e069f9f26768 49
Sissors 0:e069f9f26768 50 DS1820 probe(DATA_PIN);
Sissors 0:e069f9f26768 51
Sissors 0:e069f9f26768 52 int main() {
Sissors 0:e069f9f26768 53 while(1) {
Sissors 0:e069f9f26768 54 probe.convertTemperature(true, DS1820::all_devices); //Start temperature conversion, wait until ready
Sissors 0:e069f9f26768 55 printf("It is %3.1foC\r\n", probe.temperature());
Sissors 0:e069f9f26768 56 wait(1);
Sissors 0:e069f9f26768 57 }
Sissors 0:e069f9f26768 58 }
Sissors 0:e069f9f26768 59
Sissors 0:e069f9f26768 60 #endif