zinnet yazıcı / Mbed OS BMA220

j

thermistor/thermistor.h

Committer:
zinnetyazicii53
Date:
2019-09-11
Revision:
1:dc9389ccc09d

File content as of revision 1:dc9389ccc09d:

#define BALANCE_RES_S 1500.0
#define SAMPLE_COUNT 100

 /* Depends on the thermistor and the circuit
  *
  *                                   [V(in)]
  *                                      |
  *                       4.7 K(ohm)     |   1.5 K(ohm)
  * [+5V]-----------+-----/\/\/\/\/\-----+---/\/\/\/\/\-----------[0V]
  *                 |                    |
  *                 +-----{/\/\/\/\}-----+
  *                  THERMISTOR 4.7 K(ohm)
  *
  */
#define RES_25C       2000.0
#define RES_36C       1400.0
#define RES_DIFF_PER_C  ((RES_25C - RES_36C)/11.0)

class Thermistor{
    public:
        Thermistor(AnalogIn *aIn);
        double getTemperature();
    private:
        void getResistance();
        
        double _resistance, _temperature;
        AnalogIn *_aIn;
};