Library for driving a motor with one PWM and one DIR signal using PI control.
Fork of Motor2 by
motor.h
- Committer:
- Reiko
- Date:
- 2014-11-21
- Revision:
- 12:1d3fb22bbdf9
- Parent:
- 11:87a73d40ce5b
File content as of revision 12:1d3fb22bbdf9:
#ifndef MOTOR_H #define MOTOR_H #include "mbed.h" #include "PCA9555.h" #include "qed.h" /** Class for controlling motors trough PCA9555 */ class Motor { protected: FunctionPointer stallChangeCallback; FunctionPointer stallEndCallback; FunctionPointer stallWarningCallback; FunctionPointer stallErrorCallback; public: /** Create an instance of the motor connected to specfied pins, and IO-expander. * * @param PWMpin Pin for PWM output * @param *ioExt Pointer to IO-expander object * @param dir1Pin Direction pin 1 number (on IO-expander) * @param dir2Pin Direction pin 2 number (on IO-expander) * @param encA Encoder pin * @param encB Encoder pin */ Motor(PinName PWMpin, PCA9555 *ioExt, unsigned int dirPin, PinName encA, PinName encB); /** Set speed setpoint * * @param newSpeed New setpoint */ void setSpeed(int newSpeed); /** Get current speed setpoint value */ int getSpeed(); /**Method that calculates appropriate PWM values for keeping motor speed close to setpoint * This method shoud be called periodically (60Hz) */ void pid(); int getStallLevel(); void stallChange(void (*function)(void)); template<typename T> void stallChange(T *object, void (T::*member)(void)) { stallChangeCallback.attach(object, member); } void stallEnd(void (*function)(void)); template<typename T> void stallEnd(T *object, void (T::*member)(void)) { stallEndCallback.attach(object, member); } void stallWarning(void (*function)(void)); template<typename T> void stallWarning(T *object, void (T::*member)(void)) { stallWarningCallback.attach(object, member); } void stallError(void (*function)(void)); template<typename T> void stallError(T *object, void (T::*member)(void)) { stallErrorCallback.attach(object, member); } private: PwmOut pwm; PCA9555 *extIO; unsigned int dir; QED qed; int currentSpeed; int getDecoderCount(); void resetPID(); /** Set pwm duty cycle * * @param newPWM Duty cycle */ void setPWM(int newPWM); //void pid(); int setPoint; int pMulti; int iMulti; int dMulti; int error; int prevError; int P; int I; int D; int minPwm; int pidMulti; int iMax; int pwmPeriod; int currentPWM; int stallCount; int prevStallCount; int stallWarningLimit; int stallErrorLimit; int stallLevel; }; #endif