explanation needed

Using Arduino Programming Questions
1

can some one please explain me this code !! and i wanna include bluetooth control for this motor !!
how can it be done ?

int RPWM=5;
int LPWM=6;
int L_EN=7;
int R_EN=8;

 void setPWMfrequency(int freq){
  TCCR0B = TCCR0B & 0b11111000 | freq ;
 }

 void MotorActiveStatus(char Side,boolean s){
   boolean state=s;
   if(Side=='R'){
   digitalWrite(R_EN,s);
   }
   if(Side=='L'){
   digitalWrite(L_EN,s);
   }    
 }
 void setMotor(char side,byte pwm){
  if(side=='R'){
   analogWrite(RPWM,pwm);
  }
   if(side=='L'){
   analogWrite(LPWM,pwm);
  }
 }
 void closeMotor(char side){
    if(side=='R'){
   digitalWrite(RPWM,LOW);
    }
    if(side=='L'){
   digitalWrite(LPWM,LOW);
    }

    }
void setup() 

{
 // put your setup code here, to run once:
 setPWMfrequency(0x02);// timer 0 , 3.92KHz
 
 for(int i=5;i<9;i++){
  pinMode(i,OUTPUT);
 }
  for(int i=5;i<9;i++){
  digitalWrite(i,LOW);
 }
  delay(1000);
  MotorActiveStatus('R',true);
  MotorActiveStatus('L',true);
   Serial.begin(9600);
 }

void loop() {
 // put your main code here, to run repeatedly:

for(int i=0;i<256;i++){

 setMotor('R',i);
 delay(500);
}

delay(1000);
closeMotor('R');
delay(1000);

 for(int i=0;i<256;i++){
 setMotor('L',i);
 delay(500);
}

delay(1000);
closeMotor('L');
delay(1000);
}
2

Please modify your post and use the code button </> so your code looks like this and is easy to copy to a text editor. Then I will be study it.

If you don't understand the code I presume you got it from somewhere - where? (post a link)

What do you think the code does?
You must have some idea if you know you need to change it?

Have you tried the code?
What happened?

...R

3

yeah actually this is to control a 12 v 5a motor forward and revers !!

and this code works forward and reverse with loop but i want it controlled by Bluetooth

here is the link that i got this code !!

i have the same h bridge module BTS 7960 43 A
thanks

4

Start by writing a program that takes the instructions from the Serial Monitor. When you have that working it will be simple to add on the Bluetooth device as that is just serial-by-wireless.

You may find something useful in Serial Input Basics. The system in the 3rd example is the most reliable.

The Thread Planning and Implementing a Program may also be of interest.

...R

5