Erik - / DS1820

Library for reading temperature from DS1820, DS18B20 and DS1822

Dependencies:   LinkedList

Dependents:   heatmap BLE_Temperature BLE_Temperature_Exercise F334andDS18B20 ... more

Fork of DS1820 by David Pairman

HelloWorld: http://mbed.org/users/Sissors/code/DS1820_HelloWorld/

Library should currently work on all mbed targets, let me know if there is an issue. First however make sure you have latest version of mbed library and this library.

Diff: DS1820.cpp

Revision:
12:196e9e54b033
Parent:
11:1a3c3002b50c
Child:
14:c591209285e9
--- a/DS1820.cpp	Mon Feb 16 16:53:11 2015 +0000
+++ b/DS1820.cpp	Thu Feb 26 22:20:24 2015 +0000
@@ -117,9 +117,10 @@
         } else {
             ROM_bit_index=1;
             descrepancy_marker=0;
+            char command_shift = command;
             for (int n=0; n<8; n++) {           // Search ROM command or Search Alarm command
-                onewire_bit_out(pin, command & 0x01);
-                command = command >> 1; // now the next bit is in the least sig bit position.
+                onewire_bit_out(pin, command_shift & 0x01);
+                command_shift = command_shift >> 1; // now the next bit is in the least sig bit position.
             } 
             byte_counter = 0;
             bit_mask = 0x01;