Diff: Temperature.cpp

Revision:

1:51477fe4851b

Child:

12:fa9b1a459e47

diff -r 0a5f554d2a16 -r 51477fe4851b Temperature.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Temperature.cpp	Fri Dec 30 16:01:59 2016 +0000
@@ -0,0 +1,42 @@
+/*
+* Code for identifying address and temperature of DS1820 1-Wire Thermometers by Maxim
+* Uses the DS1820 library written by Michael Hagberg and Fernando Caamaño, with some slight modifications
+* Currently tested using DS18S20 1-Wire Thermometers in an array, parasite power yet to be tested
+*/
+#include "Temperature.h"
+ 
+DS1820* probe[MAX_PROBES];
+int devices_found = 0;
+ 
+void temperature_init()
+{
+    int i;
+    int address_byte_count;
+    // Initialize the probe array to DS1820 objects
+    for (i = 0; i < MAX_PROBES; i++)
+        probe[i] = new DS1820(DATA_PIN, PARASITE_PIN);
+    // Initialize global state variables
+    probe[0]->search_ROM_setup();
+    // Loop to find all devices on the data line
+    while (probe[devices_found]->search_ROM() and devices_found<MAX_PROBES-1)
+        devices_found++;
+    // If maximum number of probes are found,
+    // bump the counter to include the last array entry
+    if (probe[devices_found]->ROM[0] != 0xFF)
+        devices_found++;
+ 
+    if (devices_found==0)
+        printf("No devices found");
+    else {
+        printf("\n%d device(s) found!\r\n\n" ,devices_found);
+        for (i=0; i<devices_found; i++) {
+            printf("Device %d address is: \r\n", i+1);
+            for(address_byte_count=0; address_byte_count<8; address_byte_count++) {
+                printf("0x%02x", probe[i]->ROM[address_byte_count]);
+                if(address_byte_count == 7) printf("\r\n\n");
+                else printf(", ");
+            }
+        }
+    }
+}    
+    
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