Diff: DS1820.h

Revision:

6:c78fb487c397

Parent:

5:00539fbc6d79

Child:

7:aceafdd78b28

diff -r 00539fbc6d79 -r c78fb487c397 DS1820.h
--- a/DS1820.h	Mon Sep 22 00:21:07 2014 +0000
+++ b/DS1820.h	Mon Sep 22 00:38:39 2014 +0000
@@ -248,6 +248,28 @@
       */
     bool read_power_supply(devices device=this_device);
 
+    /** Allow the parasite pin to be set at any time. If it is set
+      * to "NC", then parasite mode is turned off. It is ok if this
+      * pin is the same as the datapin.
+      *
+      * @param parasitePin The pin to use for parasite power, or NC for
+      *        external power
+      * @returns true if the parasite power is set to a connected pin
+      *          false if parasite power is not connected (external power)
+      */
+    bool set_parasite_pin(DigitalInOut parasitePin) {
+        _parasitepin = parasitePin;
+        _parasite_power = (NC!=parasitePin);
+        return _parasite_power;
+    }
+    
+    /** Check if parasite power is being used.
+      *
+      * @returns true if using parasite power
+      *          false if using external power
+      */
+    bool is_on_parasite_power() const { return _parasite_power; }
+    
 private:
     bool _parasite_power;
     char CRC_byte (char CRC, char byte );