Paul Staron / Mbed OS DS1820-example

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependencies:   DS1820

main.cpp@1:1aaf20a93f36, 2020-12-29 (annotated)

Committer:
star297
Date:
Tue Dec 29 13:13:48 2020 +0000
Revision:
1:1aaf20a93f36
Parent:
0:a3c589406dc4 
DS1820 single/multi sensor OS6 compliant.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
star297 0:a3c589406dc4 1 #include "mbed.h"
star297 0:a3c589406dc4 2 #include "DS1820.h"
star297 0:a3c589406dc4 3
star297 0:a3c589406dc4 4 DigitalOut led(LED1);
star297 0:a3c589406dc4 5
star297 0:a3c589406dc4 6 #define DATA_PIN A0
star297 0:a3c589406dc4 7 #define MAX_PROBES 16
star297 0:a3c589406dc4 8 DS1820* probe[MAX_PROBES];
star297 0:a3c589406dc4 9
star297 0:a3c589406dc4 10 Timer t;
star297 0:a3c589406dc4 11
star297 0:a3c589406dc4 12 int DS;
star297 0:a3c589406dc4 13 float Temp[16];
star297 0:a3c589406dc4 14
star297 0:a3c589406dc4 15 int main(){
star297 0:a3c589406dc4 16
star297 0:a3c589406dc4 17 printf("\033[0m\033[2J\033[HInitialise...!\n\n");
star297 0:a3c589406dc4 18
star297 0:a3c589406dc4 19 while (DS1820::unassignedProbe(DATA_PIN)) {
star297 0:a3c589406dc4 20 probe[DS] = new DS1820(DATA_PIN);
star297 0:a3c589406dc4 21 DS++;
star297 0:a3c589406dc4 22 if (DS == MAX_PROBES) {
star297 0:a3c589406dc4 23 break;
star297 0:a3c589406dc4 24 }
star297 0:a3c589406dc4 25 }
star297 0:a3c589406dc4 26
star297 0:a3c589406dc4 27 if (!DS) {
star297 0:a3c589406dc4 28 printf("No Sensors found!\n\n");
star297 0:a3c589406dc4 29 ThisThread::sleep_for(chrono::milliseconds(1000));
star297 0:a3c589406dc4 30 NVIC_SystemReset();
star297 0:a3c589406dc4 31 }
star297 0:a3c589406dc4 32
star297 0:a3c589406dc4 33 // set each probe resolution, default is 12bit (750ms)
star297 0:a3c589406dc4 34 probe[0]->setResolution(9);
star297 0:a3c589406dc4 35 // probe[0]->setResolution(10);
star297 0:a3c589406dc4 36 // probe[0]->setResolution(11);
star297 0:a3c589406dc4 37 // probe[0]->setResolution(12);
star297 0:a3c589406dc4 38 // probe[1]->setResolution(9);
star297 0:a3c589406dc4 39 // probe[2]->setResolution(10);
star297 0:a3c589406dc4 40
star297 0:a3c589406dc4 41 t.start();
star297 0:a3c589406dc4 42
star297 0:a3c589406dc4 43 while(1) {
star297 0:a3c589406dc4 44
star297 0:a3c589406dc4 45 printf("\033[0m\033[2J\033[HDS Sensor data..\n\n");
star297 0:a3c589406dc4 46
star297 0:a3c589406dc4 47 int DS_error = 0;
star297 0:a3c589406dc4 48 for (int i = 0; i < DS; i++) {
star297 0:a3c589406dc4 49 Temp[i] = probe[i]->temperature();
star297 0:a3c589406dc4 50 if(Temp[i]==-1000) {
star297 0:a3c589406dc4 51 Temp[i] = probe[i]->temperature(); // get read temp again if error
star297 0:a3c589406dc4 52 DS_error++;
star297 0:a3c589406dc4 53 }
star297 0:a3c589406dc4 54 printf("Probe %d: %3.2f %cc\r\n",i,Temp[i],0xb0);
star297 0:a3c589406dc4 55 }
star297 0:a3c589406dc4 56 printf("\nDS errors: %d\n\n", DS_error);
star297 0:a3c589406dc4 57
star297 0:a3c589406dc4 58 printf("Start conversion\n");
star297 0:a3c589406dc4 59 t.reset();
star297 0:a3c589406dc4 60 // don't wait for conversion, but do something that takes at least 750ms before reading the sensors
star297 0:a3c589406dc4 61 //if(DS>0){probe[0]->convertTemperature(0, DS1820::all_devices);}
star297 0:a3c589406dc4 62
star297 0:a3c589406dc4 63 // wait for conversion, can take up to 750ms(12 bit mode)
star297 0:a3c589406dc4 64 if(DS>0){probe[0]->convertTemperature(1, DS1820::all_devices);}
star297 0:a3c589406dc4 65
star297 0:a3c589406dc4 66 printf("\nConvert process time: %0.6f Seconds\n", chrono::duration<float>(t.elapsed_time()).count());
star297 0:a3c589406dc4 67
star297 0:a3c589406dc4 68 ThisThread::sleep_for(chrono::milliseconds(1000));
star297 0:a3c589406dc4 69 }
star297 0:a3c589406dc4 70 }