/*     
 * Motor control program
 * Purpose: to control an external motor using a separate power supply
 * and a TIP41 transistor supplied in the Mobile Modular trainer
 *
 * Hookup guide:
 * Digital pin 9 to a 330 ohm resistor to the TIP29 transistor's base (Term Block # 7)
 * Arduino Ground to Mobile Modular ground (Term Block #13)
 * Mobile modular Motor Positive wire (Term Block # 16 to TIP29 Collector (Term Block #8)
 * Mobile modular Motor Negative wire (Term Block #17 to Mobile Modular 9V supply (Term block #23)
 *
 * Functionality:
 * The PWM pin (9) when turned on supplies a current to the base of the TIP29
 * The Collector of the TIP29, then allows current to flow from the 9V source through
 * the motor (acting as a switch), turning the motor on.
 * When the PWM pin is off, the transistor will also be off, and the motor will coast.
 *
 * Created by Ron Roposon
 * July 7, 2020
 */

float potValue;
float potVoltage;
const byte potInput = A0;
float Motorpercent;


const int motorPin = 9;  // pins 3, 5, 6, 9, 10, and 11 are PWM pins with the tilde ~ in front of the number
int motorSpeed = 0;      // the PWM setting for the motor control
int onTime = 3000;       // for motor control
int offTime = 1000;      // for motor control
int delayTime = 30;      // acceleration/deceleration step time

void setup()
{
  Serial.begin(9600);
  pinMode(motorPin, OUTPUT); // the PWM mode won't work unless we set the pin as an output
  pinMode(potInput, INPUT);
}

void loop()
{
  potValue = analogRead(potInput);
  Motorpercent = float(potValue) * (100.0 / 1023.0);
   //Serial.println(potVoltage);
   Serial.println(Motorpercent);
motorSpeed=float(potVoltage)*(51);
//Motorpercent=float(potValue)*((5.0/1023.0)*20);

  controlSpeed(motorSpeed, onTime, offTime);
  spinUp(motorSpeed, delayTime);
  spinDown(motorSpeed, delayTime);
  delay(1000);
  consoleMotorSpeed();
}

void spinUp(int speedSetting, int delaySetting)
{
  for (int a = 0; a < speedSetting; a++)
  {
    analogWrite(motorPin, a);
    delay(delaySetting);
  }
}

void spinDown(int speedSetting, int delaySetting)
{
  for (int a = speedSetting; a >= 0; a--)
  {
    analogWrite(motorPin, a);
    delay(delaySetting);
  }
}

void controlSpeed(int speedSetting, int timeOn, int timeOff)
{
  analogWrite(motorPin, speedSetting);
  delay(timeOn);
  if (timeOff > 0)
  {
    analogWrite(motorPin, 0);
    delay(timeOff);
  }
}

void consoleMotorSpeed()
{
  int motorSpeed = getInteger(255);
  analogWrite(motorPin, motorSpeed);
  delay(1000);
}

int getInteger(int maxValue)
{
  int newValue = maxValue + 1;
  while (Serial.available() > 0)
  {
    Serial.read();
    delay(10);
  } // clear Serial port
  //Serial.print("Please enter a motor speed between 0 and ");
  //Serial.println(maxValue);
  while (newValue > maxValue)
  {
    while (Serial.available() == 0) {}
    newValue = Serial.parseInt();
    if (newValue > maxValue)
    {
      Serial.println("Out of Range");
    }
  }
  Serial.print("New Value = ");
  Serial.println(newValue);
  return newValue;
}