const char *Version = "260829a";

const int PinBut = 4;

unsigned long msec;
int cnt;
int cnt2;

char s [90];

// -----------------------------------------------------------------------------
const unsigned long DebounceMsec = 30;
      unsigned long butMsec = 0;
      byte          butState;

void butChk ()
{
    int but = digitalRead (PinBut);


    if (butState != but)  {
        butState  = but;
        cnt++;

        if (msec - butMsec > DebounceMsec)  {
            butMsec   = msec;

            if (but == LOW)  {
                sprintf (s, " %6d %6d", cnt, ++cnt2);
                Serial.println (s);
            }
        }
    }
}

// -----------------------------------------------------------------------------
void loop ()
{
    msec = millis ();

    butChk ();
}

// -----------------------------------------------------------------------------
void setup ()
{
    Serial.begin   (115200);
    Serial.println (Version);

    pinMode (PinBut, INPUT_PULLUP);
}