#include <BTS7960.h>
// Working with new pins 03/26/21 G Liebig. Note: you must modify Library to increase PWM from 255 to 1023
/*
Pinouts
WeMos  IDE   Nano     BTS7960
D0      16             
D1       5    A5        SCL (Serial Clock)Reseve D1  
D2       4    A4        SDA (Serial Data)Reserve D1
D3       0     8        R_EN (3)
D4       2     9        L_PWM (2)
D5      14     7        L_EN (4)
D6      12     6        R_PWM (1)
D7      13    
D8      15    
TX       1   
RX       3   
Pin Order Reference
BTS7960(uint8_t RPWM,uint8_t LPWM,uint8_t R_EN,uint8_t L_EN);
*/
 
BTS7960 m1(12,2,0,14); //Pins used for D1 Mini
//BTS7960 m1(6,9,8,7);   //Pins used for Nano

int speed = 0;
float dutyCycle;

void setup() 
{
  Serial.begin(9600);
  Serial.println("Be sure to enable 'No line ending' in Monitor window");
  Serial.println("Enter Pump Speed Negative for Left, Positive for Right");
  Serial.println("between -1023 and 1023. Anything else to stop");
}

void loop() 
{
  while (Serial.available() == 0)
  {
  }
  speed = Serial.parseInt();
  dutyCycle=abs(float(speed)/1023*100);
  if (speed <0){
     Serial.print("Setting Motor Speed to left (CW) with Speed = ");
  }
  else {
    Serial.print("Setting Motor Speed to right (CCW) with Speed = ");
  }
     Serial.print(speed);
     Serial.print(" Duty Cycle % = ");
     Serial.print(dutyCycle);
     Serial.println();

  if (speed >= -1023 && speed <= 1023){
     m1.enable();
     m1.setSpeed(speed);
  }
  else
  {
    Serial.println("PUMP STOPPED");
    m1.stop();
    m1.disable();
    delay(2000);
    Serial.println();
    Serial.println("Enter Pump Speed Negative for Left, Positive for Right");
    Serial.println("between -1023 and 1023. Anything else to stop");
  }
}