Revision 8:3cb7f1ea12bf, committed 2021-08-17

Comitter:

heptasat2021

Date:

Tue Aug 17 10:51:03 2021 +0000

Parent:

7:79fba3155857

Commit message:

For Hepta-Sat Lite

Changed in this revision

diff -r 79fba3155857 -r 3cb7f1ea12bf HeptaTemp.cpp
--- a/HeptaTemp.cpp	Wed Aug 21 12:20:04 2019 +0000
+++ b/HeptaTemp.cpp	Tue Aug 17 10:51:03 2021 +0000
@@ -8,35 +8,8 @@
 
 void HeptaTemp::temp_sense(float* temp)
 {
-//resistance
-    R1 = 2500;
-    R2 = 2500;
-    R3 = 110;
-    R4 = 1000;
-    R5 = 68000;
-    Pt = 100;
-    R_1 = 3;
-    R_2 = 2;
-
-//current
-    I = 0.001;
-
-//voltage
-    Vref = 2.5;
-
-//Gain&Offset
-    float gain = -R5*I/R4;
-    float off = Vref+I*R3;
-
-//temperature coefficient
-    ce = 0.003851;
-    float volt = (_pin.read())*3.3*(R_1 + R_2)/R_1;
-    float Rth = (volt-off)/gain+R3;
-    *temp = (Rth-Pt)/(ce*Pt);
-    
-// delay some time before reading again
-    //wait(0.5);
-
+    //temperature coefficient
+    *temp = ((_pin.read())*3.3-0.6)*100;
 }
 
 void HeptaTemp::temp_sense_u16(char* temp_u16)
@@ -55,8 +28,5 @@
 
 void HeptaTemp::temp_sensing_vol(float* voltage)
 {
-    R_1 = 3;
-    R_2 = 2;
-    *voltage = (_pin.read())*3.3*(R_1 + R_2)/R_1;
-
+    *voltage = (_pin.read())*3.3;
 }
\ No newline at end of file

diff -r 79fba3155857 -r 3cb7f1ea12bf HeptaTemp.h
--- a/HeptaTemp.h	Wed Aug 21 12:20:04 2019 +0000
+++ b/HeptaTemp.h	Tue Aug 17 10:51:03 2021 +0000
@@ -11,20 +11,7 @@
     void temp_sensing_vol(float* voltage);
 
 private:
-//resistance
-    float R1,R2,R3,R4,R5;
-    float Pt;
-    float R_1,R_2;
-//current
-    float I;
-//voltage
-    float Vref;
-    
-//temperature coefficient
-    float ce;
-    
     AnalogIn _pin;
-
 };
 
 #endif