Toggle A LED With a Switch

after playing around bit, ive come code toggles led based on press of button. im sure lot of code redundant , unnecessary, learn through trial , error, , worked me. included debounce library, because im using jumper wires in breadboard , not actual switch.

ive commented code best could. if have suggestions or ways have done better, please feel free tell me!

code: [select]


#include <debounce.h>

bool washigh = false;
bool beenlow = true;
int ledpin = 13;
int switchpin = 9;

debounce debouncer = debounce(20, switchpin);

void setup()
{
 pinmode(ledpin,output);
 pinmode(switchpin,input);
}

void loop()
{
 debouncer.update();                        // update debouncer
 if ((debouncer.read() == high) && beenlow)      // if switch has been pressed , has been released (beenlow == true)
 {
   if (washigh)                         // , if light high last time
   {
     digitalwrite(ledpin,low);             // toggle light low
     washigh = false;                   // define light not high
   }
   else                               // otherwise light low last time
   {
     digitalwrite(ledpin, high);             // toggle light high
     washigh = true;                   // , define light high
   }
   beenlow = false;                         // define switch hasnt been released, prevent light flashing loop runs
 }

 if (debouncer.read() == low)                   // if switch has been released (and pulled low pulldown resistor)
 {
   if (washigh)                         // , if light on
     digitalwrite(ledpin,high);             // keep on
   else                               // otherwise light off
     digitalwrite(ledpin,low);             // keep off
   beenlow = true;                         // define switch has been released
 }
}


this way of doing it: http://www.arduino.cc/cgi-bin/yabb2/yabb.pl?num=1247178706/3#1

i think code looks fine

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