Function InputHandler

boards/m5stack-cardputer/interface.cpp:157–405

** Function: InputHandler ** Handles the variables PrevPress, NextPress, SelPress, AnyKeyPress and EscPress **********************************************************************/

** Handles the variables PrevPress, NextPress, SelPress, AnyKeyPress and EscPress
**********************************************************************/
void InputHandler(void) {
    static unsigned long tm = 0;
    static unsigned long nextRepeatTime = 0;
    static unsigned long prevRepeatTime = 0;
    static unsigned long upRepeatTime = 0;
    static unsigned long downRepeatTime = 0;

    static bool sel = false;
    static bool prev = false;
    static bool next = false;
    static bool up = false;
    static bool down = false;
    static bool esc = false;

    if (!UseTCA8418 && launcherMillis() - tm < 200 && !LongPress) return;

    if (launcherGpioRead(0) == LOW) { // GPIO0 button, shoulder button
        tm = launcherMillis();
        AnyKeyPress = true;
        if (!wakeUpScreen()) yield();
        else return;
        SelPress = true;
        AnyKeyPress = true;
    }
    if (UseTCA8418) {
        bool keyEventHandled = false;
        bool nextPulse = false;
        bool prevPulse = false;
        bool upPulse = false;
        bool downPulse = false;
        bool delPulse = false;
        bool keyPulse = false;
        keyStroke pendingKey;

        if (kb_interrupt) {
            // Drain the FIFO now. Processing one TCA8418 event per 200 ms made quick taps
            // pile up and replay later as delayed navigation.
            bool wokeScreen = false;
            while (tca.available() > 0) {
                int keyEvent = tca.getEvent();
                bool pressed = (keyEvent & 0x80); // Bit 7: 1 Pressed, 0 Released
                uint8_t value = keyEvent & 0x7F;  // Bits 0-6: key value

                // Map raw value to physical position
                uint8_t row, col;
                mapRawKeyToPhysical(value, row, col);

                // launcherConsolePrintf("Key event: raw=%d, pressed=%d, row=%d, col=%d\n", value, pressed,
                // row, col);

                if (row >= 4 || col >= 14) continue;

                // wakeUpScreen() is stateful — it returns true only on the first call when
                // the screen is actually sleeping. Track the result so that all remaining
                // events in the same FIFO burst are also discarded, not just the first one.
                if (!wokeScreen) wokeScreen = wakeUpScreen();
                if (wokeScreen) continue;