static void pinPollThread()

in libs/core/input.cpp [53:91]

• 32 lines of code
• 10 McCabe index (conditional complexity)

static void pinPollThread(void *ptr)
{
    (void)ptr;
    while (1)
    {
        delay(10);
        for (int eventNo = 0; eventNo < event_count; eventNo++)
        {
            uint8_t mask = events[eventNo].event_mask;
            uint8_t pin = (mask >> 5) & 7;
            uint8_t counter = (mask >> 3) & 3;
            uint8_t type = (mask >> 1) & 3;
            uint8_t state = (mask >> 0) & 1;

            // Ignore pins without events.
            if (!events[eventNo].body)
            {
                ;
            }

            // If the state matches the recorded state, don't change anything.
            else if ((!!digitalRead(pin)) == (!!state))
            {
                counter = 0;
            }

            // The state is different, so increment the debounce counter.
            else if (counter++ >= 3)
            {
                state = !state;
                counter = 0;

                if ((state && (type & EVENT_TYPE_FALLING)) || (!state && (type & EVENT_TYPE_RISING)))
                    runAction0(events[eventNo].body);
            }
            events[eventNo].event_mask = make_event_mask(pin, counter, type, state);
        }
    }
}