//bts7960 motor driver code
int ren = 7;//not pwm
int len = 8;//not pwm
int rpwm = 5;//pwm
int lpwm = 6;//pwm
int pot = A0;//potentiometer
void setup() {
  // put your setup code here, to run once:
  for(int i = 6; i<=8; i++){
    pinMode(i,OUTPUT);
  }
  pinMode(A0,INPUT);//setting up potentiometer pin
  digitalWrite(ren, HIGH);//enabling both clockwise and anti-clockwise directions
  digitalWrite(len, HIGH);

  Serial.begin(115200);

}

void loop() {
  // put your main code here, to run repeatedly:
  int val = map(analogRead(pot),0,1023,-255,255);
  if(val>=0){
    analogWrite(rpwm,val);
    analogWrite(lpwm,0);
    Serial.print("FWD speed:");
    Serial.println(val);
  }
  else{
    val = abs(val);
    analogWrite(rpwm,0);
    analogWrite(lpwm,val);
    Serial.print("REV Speed:");
    Serial.println(val);
  } 

}