peiyu wang / Grove_temp_sensor

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Dependents:   Grove_Temp_Hello_world

Diff: Grove_temp_sensor.cpp

Revision:
5:b7d0479535ab
Parent:
3:2b40039c6e54
Child:
6:2d65df11758a
--- a/Grove_temp_sensor.cpp	Thu Mar 10 19:28:33 2016 +0000
+++ b/Grove_temp_sensor.cpp	Thu Mar 10 19:41:32 2016 +0000
@@ -11,9 +11,9 @@
 {
 
         double a;
-        a=ain.read()*1023;
-        resistance=(float)(1023-a)*10000/a;
-        temperature=1/(log(resistance/10000)/3975+1/298.15)-276.05;
+        a=_pin.read()*1023;
+        double resistance=(float)(1023-a)*10000/a;
+        double temperature=1/(log(resistance/10000)/3975+1/298.15)-276.05;
         //conver C to F;
         temperature = (9.0*temperature)/5.0 + 32.0;
     return temperature;
@@ -23,8 +23,8 @@
 {
 
         double a;
-        a=ain.read()*1023;
-        resistance=(float)(1023-a)*10000/a;
-        temperature=1/(log(resistance/10000)/3975+1/298.15)-276.05;
+        a=_pin.read()*1023;
+        double resistance=(float)(1023-a)*10000/a;
+        double temperature=1/(log(resistance/10000)/3975+1/298.15)-276.05;
     return temperature;
 }