File content as of revision 1:b924729b5734:

#ifndef hl_bertl_portex
#define hl_bertl_portex

const int BTN_FLL = 0x80;
const int BTN_FL  = 0x04;
const int BTN_FM  = 0x01;
const int BTN_FR  = 0x08;
const int BTN_FRR = 0x40;
const int BTN_BL = 0x10;
const int BTN_BM = 0x02;
const int BTN_BR = 0x20;

const int LED_FL1 = 0x01; // white die vordere
const int LED_FL2 = 0x02; // red die hintere
const int LED_FR1 = 0x04; // white
const int LED_FR2 = 0x08; // red
const int LED_ALL_FRONT = 0x0F;

const int LED_BL1 = 0x20; // red back left outher
const int LED_BL2 = 0x10; // red back left inner
const int LED_BR1 = 0x80; // red back right outher
const int LED_BR2 = 0x40; // red back right inner
const int LED_ALL_BACK = 0xF0;


class PortEx
{
public:
    // Current State of Buttons is refreshed with ReadButtons()
    int16_t btns;
    uint8_t btnEvent;
    uint8_t useISR;
public:
    PortEx();
    void Init();

    void SetLedPort(uint8_t aBitPattern); // NO local Bit-OR
    void SetLeds(uint8_t aBitPattern);
    void ToggleLeds(uint8_t aBitPattern);
    void ClearLeds();

    void ReadButtons();
    void WaitUntilButtonPressed();
    void WaitUntilFrontButtonPressed();

    bool IsButton(int aBitPattern) {
        return btns & aBitPattern;
    }

    bool IsAnyFrontButton() {
        return btns & (BTN_FL|BTN_FM|BTN_FR);
    }

    bool IsAnyBackButton() {
        return btns & (BTN_BL|BTN_BM|BTN_BR);
    }
private:
    uint8_t _currLeds;
    void p6ISR();
    I2C _i2c;
    const int DEV = 0x40;
    InterruptIn _p6Event;
};

#endif