{

// get current time in msecs

unsigned long now = millis();

// Implementation of the state machine

// waiting for menu pin being pressed.

if (_btn_State == BTN_WAIT_PUSH) {

// Putton pushed ?

if (buttonLevel == BTN_PRESSED) {

// now wait for release

_btn_State = BTN_WAIT_RELEASE;

// Set starting time

_btn_StartTime = now;

}

// we're waiting for button released.

} else if (_btn_State == BTN_WAIT_RELEASE) {

// effectivly released ?

if (buttonLevel == BTN_RELEASED) {

// next step is to check debounce

_btn_State = BTN_WAIT_DEBOUNCE;

// still pressed, is it a Long press that is now starting ?

} else if ((buttonLevel == BTN_PRESSED) && (now > _btn_StartTime + BTN_LONG_PUSH_DELAY)) {

// Set long press state

_btn_LongPress = true;

// step to waiting long press release

_btn_State = BTN_WAIT_LONG_RELEASE;

}

// waiting for being pressed timeout.

} else if (_btn_State == BTN_WAIT_DEBOUNCE) {

// do we got debounce time reached when released ?

if (now > _btn_StartTime + BTN_DEBOUNCE_DELAY)

_btn_Action = BTN_QUICK_PRESS;

else

_btn_Action = BTN_BAD_PRESS;

// restart state machine

_btn_State = BTN_WAIT_PUSH;

// waiting for menu pin being release after long press.

} else if (_btn_State == BTN_WAIT_LONG_RELEASE) {

// are we released the long press ?

if (buttonLevel == BTN_RELEASED) {

// we're not anymore in a long press

_btn_LongPress = false;

// be sure to light off the blinking RGB led

LedRGBOFF();

// We done, restart state machine

_btn_State = BTN_WAIT_PUSH;

} else {

uint8_t sec_press;

// for how long we have been pressed (in s)

sec_press = ((now - _btn_StartTime)/1000L);

// we're still in a long press

_btn_LongPress = true;

// We pressed button more than 7 sec

if (sec_press >= 7 ) {

// Led will be off

_btn_Action = BTN_TIMEOUT;

// We pressed button between 6 and 7 sec

} else if (sec_press >= 6 ) {

_btn_Action = BTN_PRESSED_67;

// Prepare LED color

LedRGBON(COLOR_RED);

// We pressed button between 5 and 6 sec

} else if (sec_press >= 5 ) {

_btn_Action = BTN_PRESSED_56;

LedRGBON(COLOR_YELLOW);

// We pressed button between 4 and 5 sec

} else if (sec_press >= 4 ) {

_btn_Action = BTN_PRESSED_45;

LedRGBON(COLOR_GREEN);

// We pressed button between 3 and 4 sec

} else if (sec_press >= 3 ) {

_btn_Action = BTN_PRESSED_34;

LedRGBON(COLOR_BLUE);

// We pressed button between 2 and 3 sec

} else if (sec_press >= 2 ) {

_btn_Action = BTN_PRESSED_23;

LedRGBON(COLOR_MAGENTA);

// We pressed button between 1 and 2 sec

} else if (sec_press >= 1 ) {

_btn_Action = BTN_PRESSED_12;

LedRGBON(COLOR_CYAN);

}

// manage the fast blinking

// 20ms ON / 80ms OFF

if (millis() % 100 < 50 ) {

// Set Color

#ifdef RGB_LED_PIN

rgb_led.SetPixelColor(0, rgb_led_color);

rgb_led.Show();

#endif

} else {

LedRGBOFF();

}

}

}

// return the state machine we're in

return (_btn_State);