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Dependencies:   CUER_CAN CUER_DS1820 LTC2943 LTC6804 mbed PowerControl

Temperature.cpp@38:b1f5bfe38d70, 2017-07-22 (annotated)

Committer:
DasSidG
Date:
Sat Jul 22 11:11:53 2017 +0000
Revision:
38:b1f5bfe38d70
Parent:
21:d461d58e70fc
Child:
66:c884fba9eaea
Made it so that temperature measurements don't happen every loop

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lcockerton62 1:51477fe4851b 1 /*
lcockerton62 1:51477fe4851b 2 * Code for identifying address and temperature of DS1820 1-Wire Thermometers by Maxim
lcockerton62 1:51477fe4851b 3 * Uses the DS1820 library written by Michael Hagberg and Fernando Caamaño, with some slight modifications
lcockerton62 1:51477fe4851b 4 * Currently tested using DS18S20 1-Wire Thermometers in an array, parasite power yet to be tested
lcockerton62 1:51477fe4851b 5 */
lcockerton62 1:51477fe4851b 6 #include "Temperature.h"
DasSidG 38:b1f5bfe38d70 7 #define DEBUG 0
lcockerton62 1:51477fe4851b 8
lcockerton62 1:51477fe4851b 9 DS1820* probe[MAX_PROBES];
maxv008 18:521ffdd724f3 10 int devices_found;
DasSidG 21:d461d58e70fc 11 DigitalOut isotherm_12V_pin(ISOTHERM_12V_PIN);
lcockerton62 1:51477fe4851b 12
lcockerton62 1:51477fe4851b 13 void temperature_init()
lcockerton62 1:51477fe4851b 14 {
maxv008 20:a1a1bfc938da 15 //DigitalOut isotherm_12V_pin(ISOTHERM_12V_PIN);
DasSidG 21:d461d58e70fc 16 isotherm_12V_pin = 1;
lcockerton62 1:51477fe4851b 17 int address_byte_count;
lcockerton62 1:51477fe4851b 18 // Initialize the probe array to DS1820 objects
DasSidG 21:d461d58e70fc 19 for (int i = 0; i < MAX_PROBES; i++)
lcockerton62 1:51477fe4851b 20 probe[i] = new DS1820(DATA_PIN, PARASITE_PIN);
lcockerton62 1:51477fe4851b 21 // Initialize global state variables
lcockerton62 1:51477fe4851b 22 probe[0]->search_ROM_setup();
lcockerton62 1:51477fe4851b 23 // Loop to find all devices on the data line
lcockerton62 1:51477fe4851b 24 while (probe[devices_found]->search_ROM() and devices_found<MAX_PROBES-1)
lcockerton62 1:51477fe4851b 25 devices_found++;
DasSidG 21:d461d58e70fc 26
DasSidG 21:d461d58e70fc 27 isotherm_12V_pin = 0;
lcockerton62 1:51477fe4851b 28 // If maximum number of probes are found,
lcockerton62 1:51477fe4851b 29 // bump the counter to include the last array entry
lcockerton62 1:51477fe4851b 30 if (probe[devices_found]->ROM[0] != 0xFF)
lcockerton62 1:51477fe4851b 31 devices_found++;
lcockerton62 1:51477fe4851b 32
lcockerton62 1:51477fe4851b 33 if (devices_found==0)
DasSidG 38:b1f5bfe38d70 34 if (DEBUG) printf("No devices found");
lcockerton62 1:51477fe4851b 35 else {
DasSidG 38:b1f5bfe38d70 36 if (DEBUG) printf("\n%d device(s) found!\r\n\n" ,devices_found);
DasSidG 21:d461d58e70fc 37 for (int i=0; i<devices_found; i++) {
DasSidG 38:b1f5bfe38d70 38 if (DEBUG) printf("Device %d address is: \r\n", i+1);
lcockerton62 1:51477fe4851b 39 for(address_byte_count=0; address_byte_count<8; address_byte_count++) {
DasSidG 38:b1f5bfe38d70 40 if (DEBUG) printf("0x%02x", probe[i]->ROM[address_byte_count]);
DasSidG 38:b1f5bfe38d70 41 if(address_byte_count == 7) {
DasSidG 38:b1f5bfe38d70 42 if (DEBUG) printf("\r\n\n");
DasSidG 38:b1f5bfe38d70 43 }
lcockerton62 1:51477fe4851b 44 else printf(", ");
lcockerton62 1:51477fe4851b 45 }
lcockerton62 1:51477fe4851b 46 }
lcockerton62 1:51477fe4851b 47 }
lcockerton62 1:51477fe4851b 48 }
lcockerton62 1:51477fe4851b 49