Time between high signal & Low signal + During High Signal

hi everybody,

i'm new in arduino world.
i prepared test system time between 2 button signals. works problem can measure time between high & low signal or opposite. therefore, can't measure total time during button press , release.

i want calculate between first pulse of high signal , next first pulse of high signal. support me if know solution please find codes below. thank you.

code: [select]



byte button =7;
int led = 8;
int buzzer = 3;
unsigned long starttime;
unsigned long endtime;
unsigned long duration;
unsigned long starttime1;
unsigned long endtime1;
unsigned long duration1;
byte timerrunning;
void setup(){
pinmode (button, input_pullup);
pinmode(led, output);
pinmode(buzzer, output);
serial.begin(9600);
}
void loop(){
  if (timerrunning == 0 && digitalread(button) == low){ // button pressed & timer not running already
  starttime = millis();
  timerrunning = 1;
  }
  if (timerrunning == 1 && digitalread(button) == high){ // timer running, button released
  endtime = millis();
  timerrunning = 0;
  duration = endtime - starttime;
  serial.print ("button press time in milliseconds: ");
  serial.println (duration);
  digitalwrite(buzzer, high);
  digitalwrite(led, high);
  }
  else
{
 
  digitalwrite(buzzer, low);
  digitalwrite(led, low);
}
 
}



at moment have 2 states - timerrunning = 0 , 1. think if introduce 3rd state can detect button has gone high , low again

something this

code: [select]

    if (timerrunning == 0 && digitalread(button) == low){ // button pressed & timer not running already
        starttime = millis();
        timerrunning = 1;
    }
    if (timerrunning == 1 && digitalread(button) == high){ // timer running, button released
timerrunning = 2;
}
    if (timerrunning == 2 && digitalread(button) == low){ // timer running, button released
        endtime = millis();
        timerrunning = 0;
        duration = endtime - starttime;

if have misunderstood requirement please make simple drawing showing pulse , points @ wish measure time , post photo of drawing.

...r

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