wireless sensor / PHtest

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Fork of LinearAnalogSensors by Penn Electric

Files at this revision

API Documentation at this revision

Revision 3:c749fbcf2acb, committed 2016-08-11

Comitter:
Dengjj
Date:
Thu Aug 11 14:14:49 2016 +0000
Parent:
2:989048937c77
Commit message:
working for PH test

Changed in this revision

LinearTemp.cpp Show annotated file Show diff for this revision Revisions of this file 
diff -r 989048937c77 -r c749fbcf2acb LinearTemp.cpp
--- a/LinearTemp.cpp	Sun Dec 23 07:32:24 2012 +0000
+++ b/LinearTemp.cpp	Thu Aug 11 14:14:49 2016 +0000
@@ -27,6 +27,7 @@
     _multiplier = (temp2 - temp1) / (read2 - read1); // Calculate multiplier as slope
     _offset = temp1 - (_multiplier * read1);         // Calculate offset
 }
+
 // Constructor using user defined multiplier and offset
 LinearTemp::LinearTemp(PinName pin, float multiplier, float offset):_pin(pin) {
     _temp = 0.0;                                     // Zero the temperature
@@ -36,6 +37,7 @@
 
 // Populates an array with temperature readings, sorts, and returns median
 float LinearTemp::readTemp() {
+   /*
     _tempArr[0] = _pin.read_u16();
     for (int i = 1; i < 9; i++) { 
         _tempArr[i] = _pin.read_u16();
@@ -47,7 +49,10 @@
         }
         _tempArr[j + 1] = tmp;
     }
-    _temp = (_tempArr[4] * _multiplier) + _offset;
+    //_temp = (_tempArr[4] * _multiplier) + _offset;
+    */
+    _temp = (float)_pin.read_u16();
+    _temp = _temp*3/(16*4096);
     return _temp;
 }
 // Returns last calculated temperature value