Source file: /~heha/basteln/Haus/Lüfter/my_avr449.zip/pid.h

#pragma once

#include <stdint.h>

class PID_DATA{
 enum {SCALING_FACTOR = 256};
  //! Last process value, used to find derivative of process value.
 int16_t lastProcessValue;
  //! Summation of errors, used for integrate calculations
 int32_t sumError;
  //! The Proportional tuning constant, multiplied with SCALING_FACTOR
 int16_t P_Factor;
  //! The Integral tuning constant, multiplied with SCALING_FACTOR
 int16_t I_Factor;
  //! The Derivative tuning constant, multiplied with SCALING_FACTOR
 int16_t D_Factor;
  //! Maximum allowed error, avoid overflow
 int16_t maxError;
  //! Maximum allowed sumerror, avoid overflow
 int32_t maxSumError;
public:
 void Init(int16_t p_factor, int16_t i_factor, int16_t d_factor);
 int16_t Controller(int16_t setPoint, int16_t processValue);
 void Reset_Integrator();
};