While loops in parallel

Projects Programming
1

Actually I was working on a small project.I have omitted few functions to make the reader easy to deal with the problem.My code looks like as below

{

pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(LEDPin, OUTPUT);

}

void loop()
{
while(1) //1st loop
{

// Some commands which were executed
}

while(2) //2nd loop
{

// Commands which failed to execute
}

Functions written in the second while loop does not come into play.Is it not possible to run two or more loops in parallel in arduino IDE ?

2

Is it not possible to run two or more loops in parallel in arduino IDE ?

It is not.

3

Is it not possible to run two or more loops in parallel in arduino IDE ?

No. The arduino is single threaded. It's fast though, so you can make it look as though it's doing multiple things at once. The blink without delay example is often touted to show the technique of using millis to control when things happen.

4 
while(1)  //1st loop
    {
     
       // Some commands which were executed
    }
   
  while(2) //2nd loop

In C/C++ the convention is that anything non-zero evaluates to "true", so "while (1)" is an infinite loop.
For the same reason, "while (2)" is also an infinite loop, but is never reached because the first loop never terminates.

5

How about trying it this way?

void loop() 
{ 
  while (condition1 || condition2)
  {
    if (condition1)  //1st block 
    {
      
       // Some commands which were executed
    }
   
    if (condition2) //2nd block
    {  
      
      // Commands which should no longer fail to execute
    }
  }
}

The outer while is somewhat redundant, since loop() is a forever loop, but you get the idea.

6

somanshumehta:
Actually I was working on a small project.I have omitted few functions to make the reader easy to deal with the problem

Actually, it would be better if you posted real code to demonstrate what you're trying to do, even if it doesn't currently do what you want. As it stands, there seems no point to either of your while() loops since "// some commands ..." would be executed repeatedly by virtue of being inside the loop() function anyway.

7

If your project is complex enough, you can try an RTOS such as ArdOS

More choices here: Google Code Archive - Long-term storage for Google Code Project Hosting.