Revision 2:374faf195af3, committed 2020-07-09

Comitter:

condato_mbed

Date:

Thu Jul 09 15:56:36 2020 +0000

Parent:

1:601e1435dfb8

Commit message:

thermistor

Changed in this revision

diff -r 601e1435dfb8 -r 374faf195af3 Thermistor.cpp
--- a/Thermistor.cpp	Wed Mar 09 13:56:37 2016 +0000
+++ b/Thermistor.cpp	Thu Jul 09 15:56:36 2020 +0000
@@ -27,7 +27,7 @@
         SeriesResistor = SERIESRESISTOR;
     }
  
-     // This is the workhorse routine that calculates the temperature
+    // This is the workhorse routine that calculates the temperature
     // using the Steinhart-Hart equation for thermistors
     // https://en.wikipedia.org/wiki/Steinhart%E2%80%93Hart_equation
     float Thermistor::get_temperature()
@@ -41,11 +41,11 @@
             a += _pin.read_u16();       // Read 16bit Analog value
         }
         a = a/smooth;                   // Get average of samples    
- //       pc.printf("Raw Analog Value for Thermistor = %d\r\n",a);
+        //printf("Raw Analog Value for Thermistor = %d\r\n",a);
       
         /* Calculate the resistance of the thermistor from analog votage read. */
         resistance = (float) SeriesResistor / ((65536.0 / a) - 1);
- //       pc.printf("Resistance for Thermistor = %f\r\n",resistance);
+        //printf("Resistance for Thermistor = %f\r\n",resistance);
        
         steinhart = resistance / ThermistorNominal;         // (R/Ro)
         steinhart = log(steinhart);                         // ln(R/Ro)

diff -r 601e1435dfb8 -r 374faf195af3 Thermistor.h
--- a/Thermistor.h	Wed Mar 09 13:56:37 2016 +0000
+++ b/Thermistor.h	Thu Jul 09 15:56:36 2020 +0000
@@ -78,13 +78,13 @@
 #include "mbed.h"
 
 
-#define THERMISTORNOMINAL 100000      // 100k default 
+#define THERMISTORNOMINAL 10000      // 100k default 
 // temp. for nominal resistance (almost always 25 C)
-#define TEMPERATURENOMINAL 25   
+#define TEMPERATURENOMINAL 25
 // The beta coefficient of the thermistor (usually 3000-4000)
 #define BCOEFFICIENT 3950
 // the value of the 'other' resistor
-#define SERIESRESISTOR 4700    
+#define SERIESRESISTOR 4700
   
 
 class Thermistor {
@@ -93,7 +93,7 @@
     /** Receives a PinName variable.
      * @param pin mbed pin to which the thermistor is connected
      */
- 
+
 
     float get_temperature();
     /**  This is the workhorse routine that calculates the temperature