Chief Delphi - toggle switch

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- - toggle switch (http://www.chiefdelphi.com/forums/showthread.php?t=41983)

Re: toggle switch

Quote:

Originally Posted by Windward

So, what would that code look like?

Code:

char fire(void) //Will return 0 until firing is complete

{

  static unsigned int counter = 0;

  printf("Piston Forwardr");

  relay1_rev = 0;

  relay1_fwd = 1;

  if (counter > MAX_COUNTER) //MAX_COUNTER is defined in .h

    {

      printf("Piston Backr");

      relay1_fwd = 0;

      relay1_rev = 1;

      printf("Firing done!r");

      counter = 0;

      return 1;

    }

  else

    {

      counter++;

      return 0;

    }

}

This will push the piston forward for MAX_COUNTER processor loops (26.2ms each), then retract the piston. When it is called, it should continue being called until it returns a 1.
I'm not exactly sure what the original code is trying to do, but this is my best guess.
Also, its probably error-licious for lack of testing and sorta slapping it together.
I hope it helps though.

Re: toggle switch

Quote:

Originally Posted by KenWittlief

remember the spike has three output states: forward, reverse, and off.

Actually four:

forward reverse
off off
off on
on off
on on

Although the spike is labeled fwd and rev, it is really two sperate on/off relays. Doesn't make a lot of sense when hooked up to a piston to have both on, but there are other applications...