File content as of revision 0:6b68dac0d986:

/*
 *  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 DISPLAY_H
#define DISPLAY_H

#include "mbed.h"

class Display {
public:
    enum Constants {
        NumLEDs       =  4,
    };
  
    enum DisplayError {
        Ok            =       0,
        ConfigError   =       1,
        WrongBPP      =       2,
        InvalidParam  =       3,
        NoInit        =       4,
    };
    
    enum Resolution {
        Resolution_16bit_rgb565 = 16,
        Resolution_18bit_rgb666 = 18,
        Resolution_24bit_rgb888 = 24,
    };
    
    static Display& instance()
    {
        static Display singleton;
        return singleton;
    }
  

    /** Initializes the wanted features
     *
     *  @returns
     *       Ok on success
     *       An error code on failure
     */
    DisplayError init();
  
    /** Initializes the wanted features
     *
     *  @returns
     *       Ok on success
     *       An error code on failure
     */
    DisplayError powerUp(void* framebuffer, Resolution wanted = Resolution_16bit_rgb565);
  
    /** Initializes the wanted features
     *
     *  @returns
     *       Ok on success
     *       An error code on failure
     */
    DisplayError powerDown();
  
    /** Sets the backlight level. 0% is off and 100% is fully on
     *
     *  @returns
     *       Ok on success
     *       An error code on failure
     */
    DisplayError backlight(int percent);
  
    uint16_t width() { return _width; }
    uint16_t height() { return _height; }
    uint16_t bpp() { return _bpp; }
    uint32_t fbSize() { return _fbSize; }
    bool landscape() { return _landscape; }
    bool isSupported(Resolution res);
    void setFramebuffer(void* buff);
    void* swapFramebuffer(void* buff);
    void* allocateFramebuffer(Resolution res=Resolution_16bit_rgb565);

private:

    bool _initialized;
    bool _poweredOn;
    DigitalOut _pinWP;
    DigitalOut _pin3v3;
    DigitalOut _pin5v;
    DigitalOut _pinDE;
    DigitalOut _pinColDepth;
    PwmOut _pinBacklight;

    uint16_t _width;
    uint16_t _height;
    uint16_t _bpp;
    uint32_t _fbSize;
    bool _landscape;

    explicit Display();
    // hide copy constructor
    Display(const Display&);
    // hide assign operator
    Display& operator=(const Display&);
    ~Display();
    
    void pinInit(bool powerOn, Resolution res=Resolution_16bit_rgb565);
    DisplayError regInit(void* info, Resolution res);
    uint32_t getClockDivisor(uint32_t clock);
    void set3v3(bool on);
    void set5v(bool on);
    void setDisplayEnable(bool enable);    
};

#endif