File content as of revision 9:49b59b308767:

#include "DC_Motor_Controller.h"

//************************************************//
// COMMENT NEXT LINE TO ENABLE/DISABLE DEBUG MODE //
//                                                //
                #define DEBUG_MODE                //
//                                                //
//************************************************//


void DC_Motor_Controller::goto_angle(int angle){      //  Move motor to specific angle from home point
        
    #ifdef DEBUG_MODE 
    Serial device(USBTX, USBRX);  // tx, rx
    device.baud(9600);
    #endif

    int tar_pulse = ((double) angle / 360.0)* (2.0 * 792.0);    //  Calculating target pulse number
    int cur_pulse = dc_motor.getPulses();
    int direction = 0;
    
    #ifdef DEBUG_MODE 
    device.printf("\n------ current %d -> target %d -----\n", cur_pulse, tar_pulse);
    #endif
    
    while ( tar_pulse != cur_pulse ){
        direction = tar_pulse > cur_pulse; // cw 1 ; acw 0
      
        // if margin of error is less than +-3 (+- 1 degree), give up 
        if(abs(tar_pulse - cur_pulse) < 3)
        {
            #ifdef DEBUG_MODE 
            device.printf("GIVEUP ");
            #endif
            break;
        }
        
        // future direction diff from current motion, pause for 0.5 to prevent unexpected outputs
        else if (direction != out1) 
        {
            out1 = out2 = 0;
            #ifdef DEBUG_MODE 
            device.printf("PAUSE ");
            #endif
            wait(0.3); 
        }
      
        out1 = direction;
        out2 = !direction;
        #ifdef DEBUG_MODE 
        device.printf(direction ? "> " : "< ");
        #endif
        
        cur_pulse = dc_motor.getPulses();   //  Get increment encoder current pulse number
        
        #ifdef DEBUG_MODE 
        device.printf("%d ", cur_pulse);
        #endif

    }
    #ifdef DEBUG_MODE 
    device.printf("\n----- done -----\n");
    #endif
    out1 = 0;       //  Stop motor
    out2 = 0;
};
    
void DC_Motor_Controller::reset(){       // Setting home point for increment encoder
    /*while (home_button == 0){       // Continue to turn clockwise until home button pressed
        out1 = 1;
        out2 = 0;
    }*/
    out1 = 0;
    out2 = 0;
    dc_motor.reset();       //  Reset pulse_
    wait(0.3);
};

void DC_Motor_Controller::move_angle(int angle){      //  move for relative distance
    reset();
    goto_angle(angle);
    reset();
};

void DC_Motor_Controller::set_out(int a, int b)
{ 
    out1 = a;
    out2 = b;
}

int DC_Motor_Controller::get_pulse()
{
    return dc_motor.getPulses();
}