File content as of revision 5:b46d1e179eb7:

#include "MotorControler.h"

MotorControler::MotorControler(PinName DIR, PinName PWM, PinName nSLP, DriverType md_type) : DIR_(DIR), PWM_(PWM), nSLP_(nSLP)
{
    disableDriver();
    reverse_direction_ = 0;
    current_speed_ = 0;
    md_type_ = md_type;
}

float MotorControler::operator = (float speed) {
    setSpeed(speed);
    return current_speed_;
}

float MotorControler::operator + (float speed) {
    return current_speed_ + speed;
}

float MotorControler::operator += (float speed) {
    setSpeed(current_speed_ + speed);
    return current_speed_;
}

float MotorControler::operator - (float speed) {
    return current_speed_ - speed;
}

float MotorControler::operator -= (float speed) {
    setSpeed(current_speed_ - speed);
    return current_speed_;
}

float MotorControler::operator * (float val) {
    return current_speed_ * val;
}

float MotorControler::operator *= (float val) {
    setSpeed(current_speed_ * val);
    return current_speed_;
}

float MotorControler::operator / (float val) {
    return current_speed_ / val;
}

float MotorControler::operator /= (float val) {
    setSpeed(current_speed_ / val);
    return current_speed_;
}

void MotorControler::enableDriver()
{
    if(md_type_ == POLOLU)
    {
        nSLP_ = 1;
    }
    else if(md_type_ == TEXNITIS)
    {
        // do nothing;
    }
}

void MotorControler::disableDriver()
{
    if(md_type_ == POLOLU)
        nSLP_ = 0;
    else if(md_type_ == TEXNITIS)
        PWM_ = 0;
}

void MotorControler::setSpeed(float speed)
{
    uint8_t reverse = 0;
    
    // 最大デューティ比で制限
    if(speed < -1) speed = -1;
    else if(speed > 1) speed = 1; 
    current_speed_ = speed;
    
    if (speed < 0)
    {
        speed = -speed;  // Make speed a positive quantity
        reverse = 1;  // Preserve the direction
    }
        
    PWM_ = speed;
    if (reverse ^ FLIP_MOTOR_DIR ^ reverse_direction_)
    {
        DIR_ = 1;
    }
    else
    {
        DIR_ = 0;
    }
}

void MotorControler::setMotorDirection(MotorDirection dir)
{
    reverse_direction_ = dir;
}

void MotorControler::setPwmFrequency(float frequency)
{
    float period = 1.0/frequency;
    PWM_.period(period);
}