File content as of revision 11:dedcebcfc869:

/*
 *  Copyright 2014 Embedded Artists AB
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

#ifndef BIOSDISPLAYANDTOUCH_H
#define BIOSDISPLAYANDTOUCH_H

#include "mbed.h"
#include "TouchPanel.h"
#include "Display.h"
#include "bios.h"

/**
 * Glue between the BIOS and the Display/TouchPanel interfaces.
 */
class BiosDisplayAndTouch : public TouchPanel, public Display {
public:
    
    /** Get the only instance of the BiosDisplayAndTouch
     *
     *  @returns The display
     */
    static BiosDisplayAndTouch& instance()
    {
        static BiosDisplayAndTouch singleton;
        return singleton;
    }
  

    /** Initializes the display but does not turn it on
     *
     *  @returns
     *       Ok on success
     *       An error code on failure
     */
    DisplayError initDisplay();
  
    /**
     * Initialize the touch controller. This method must be called before
     * calibrating or reading data from the controller
     *
     *  @returns
     *       Ok on success
     *       An error code on failure
     */
    TouchError initTouchController();

    /**
     * Tests if a touch controller is available or not.
     *
     * Note that this function only returns a valid value
     * after the display has been intitialized.
     *
     * @return true if there is a touch controller
     */
    bool isTouchSupported();
    
    void handleTouchInterrupt();
    void changeTouchInterrupt(bool enable, bool rising);
  
    // From the Display interface
    virtual DisplayError powerUp(void* framebuffer, Resolution wanted = Resolution_16bit_rgb565);
    virtual DisplayError powerDown();
    virtual DisplayError backlight(int percent);
    virtual uint16_t width();
    virtual uint16_t height();
    virtual uint16_t bytesPerPixel();
    virtual uint32_t fbSize();
    virtual bool landscape();
    virtual bool isSupported(Resolution res);
    virtual Resolution currentResolution();
    virtual void setFramebuffer(void* buff);
    virtual void* swapFramebuffer(void* buff);
    virtual void* allocateFramebuffer(Resolution res=Resolution_16bit_rgb565);

    // From the TouchPanel interface
    virtual TouchError read(touchCoordinate_t &coord);
    virtual TouchError calibrateStart();
    virtual TouchError getNextCalibratePoint(uint16_t* x, uint16_t* y, bool* last=NULL);
    virtual TouchError waitForCalibratePoint(bool* morePoints, uint32_t timeout);

private:

    bool _initializedDisplay;
    bool _poweredOn;
    bool _initializedTouch;
    InterruptIn _touchIRQ;
    //FunctionPointer _touchFP;

    bios_header_t _bios;
    void* _biosData;

    uint16_t _width;
    uint16_t _height;
    uint16_t _bpp;
    uint16_t _supportedRes;
    Resolution_t _activeRes;
    bool _landscape;
    bool _supportsTouch;

    explicit BiosDisplayAndTouch();
    // hide copy constructor
    BiosDisplayAndTouch(const BiosDisplayAndTouch&);
    // hide assign operator
    BiosDisplayAndTouch& operator=(const BiosDisplayAndTouch&);
    ~BiosDisplayAndTouch();
};

#endif /* BIOSDISPLAYANDTOUCH_H */