PAR16.h

00001 #ifndef PAR16_H
00002 #define PAR16_H
00003 
00004 #include "mbed.h"
00005 #include "Protocols.h "
00006 
00007 #if DEVICE_PORTINOUT
00008 
00009 //#include "GraphicsDisplay.h"
00010 
00011 /** Parallel 16bit interface
00012 */
00013 class PAR16 : public Protocols
00014 {
00015  public:
00016 
00017     /** Create a PAR16 display interface with a GPIO port and 5 control pins
00018     *
00019     * @param port GPIO port to use
00020     * @param CS pin connected to CS of display
00021     * @param reset pin connected to RESET of display
00022     * @param DC pin connected to data/command of display
00023     * @param WR pin connected to SDI of display
00024     * @param RD pin connected to RS of display 
00025     */ 
00026     PAR16(PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD);
00027 
00028 protected:
00029   
00030     /** Send 8bit command to display controller 
00031     *
00032     * @param cmd: byte to send  
00033     *
00034     */   
00035     virtual void wr_cmd8(unsigned char cmd);
00036     
00037     /** Send 8bit data to display controller 
00038     *
00039     * @param data: byte to send   
00040     *
00041     */   
00042     virtual void wr_data8(unsigned char data);
00043     
00044     /** Send 2x8bit command to display controller 
00045     *
00046     * @param cmd: halfword to send  
00047     * @note 2cycles using pins[7:0]
00048     */   
00049     virtual void wr_cmd16(unsigned short cmd);
00050     
00051     /** Send 2x8bit data to display controller 
00052     *
00053     * @param data: halfword to send   
00054     * @note 2cycles using pins[7:0], only gram write cmd uses pins[15:8]
00055     */   
00056     virtual void wr_data16(unsigned short data);
00057     
00058     /** Send 16bit pixeldata to display controller 
00059     *
00060     * @param data: halfword to send   
00061     * @note here using all pins[15:0]
00062     */   
00063     virtual void wr_gram(unsigned short data);
00064     
00065     /** Send same 16bit pixeldata to display controller multiple times
00066     *
00067     * @param data: halfword to send
00068     * @param count: how many
00069     * @note here using all pins[15:0]
00070     */   
00071     virtual void wr_gram(unsigned short data, unsigned int count);
00072     
00073     /** Send array of pixeldata shorts to display controller
00074     *
00075     * @param data: unsigned short pixeldata array
00076     * @param lenght: lenght (in shorts)
00077     * @note here using all pins[15:0]
00078     */   
00079     virtual void wr_grambuf(unsigned short* data, unsigned int lenght);
00080     
00081     /** Read 16bit pixeldata from display controller (with dummy cycle)
00082     *
00083     * @param convert true/false. Convert 18bit to 16bit, some controllers returns 18bit
00084     * @returns 16bit color
00085     */ 
00086     virtual unsigned short rd_gram(bool convert);
00087     
00088     /** Read 4x8bit register data (with dummy cycle)
00089     * @param reg the register to read
00090     * @returns data as uint
00091     * 
00092     */ 
00093     virtual unsigned int rd_reg_data32(unsigned char reg);
00094     
00095     /** Read 3x8bit ExtendedCommands register data
00096     * @param reg the register to read
00097     * @returns data as uint
00098     * @note EXTC regs (0xB0 to 0xFF) are read/write registers, for Parallel mode directly accessible in both directions
00099     */ 
00100     virtual unsigned int rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd);
00101     
00102     /** ILI932x specific, does a dummy read cycle, number of bits is protocol dependent
00103     * for PAR protocols: a signle RD bit toggle
00104     * for SPI8: 8clocks
00105     * for SPI16: 16 clocks
00106     */   
00107     virtual void dummyread ();
00108     
00109     /** ILI932x specific, select register for a successive write or read
00110     *
00111     * @param reg register to be selected
00112     * @param forread false = a write next (default), true = a read next
00113     * @note forread only used by SPI protocols
00114     */   
00115     virtual void reg_select(unsigned char reg, bool forread =false);
00116     
00117     /** ILI932x specific, write register with data
00118     *
00119     * @param reg register to write
00120     * @param data 16bit data
00121     */   
00122     virtual void reg_write(unsigned char reg, unsigned short data);
00123     
00124     /** ILI932x specific, read register
00125     *
00126     * @param reg register to be read
00127     * @returns 16bit register value
00128     */ 
00129     virtual unsigned short reg_read(unsigned char reg);
00130     
00131     /** HW reset sequence (without display init commands)   
00132     */
00133     virtual void hw_reset();
00134     
00135     /** Set ChipSelect high or low
00136     * @param enable 0/1   
00137     */
00138     virtual void BusEnable(bool enable);
00139   
00140    
00141 
00142 private:
00143 
00144     PortInOut _port;
00145     DigitalOut _CS; 
00146     DigitalOut _reset;
00147     DigitalOut _DC;
00148     DigitalOut _WR;
00149     DigitalOut _RD;
00150   
00151 };
00152 #endif
00153 
00154 #endif