boolean buttonValue = false;
boolean ascendToggle = false;
boolean isButtonDown = false;

private void someFunction() {
    if (buttonValue == true && isButtonDown == false) {
        isButtonDown = true;

        if (buttonValue && !ascendLast) {
            ascendToggle = !ascendToggle;
            ascendLast = //code

            if (ascendToggle) {
                //code
            }
        }
    } else {
        isButtonDown = false;
    }
}