PAR8.h

00001 #ifndef PAR8_H
00002 #define PAR8_H
00003 
00004 #include "mbed.h"
00005 #include "Protocols.h "
00006 
00007 #if DEVICE_PORTINOUT
00008 //#include "GraphicsDisplay.h"
00009 
00010 /** Parallel 8bit interface
00011 */
00012 class PAR8 : public Protocols
00013 {
00014  public:
00015 
00016     /** Create a PAR8 display interface with a GPIO port and 5 control pins
00017     *
00018     * @param port GPIO port to use
00019     * @param CS pin connected to CS of display
00020     * @param reset pin connected to RESET of display
00021     * @param DC pin connected to data/command of display
00022     * @param WR pin connected to SDI of display
00023     * @param RD pin connected to RS of display 
00024     */ 
00025     PAR8(PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD);
00026 
00027 protected:
00028   
00029     /** Send 8bit command to display controller 
00030     *
00031     * @param cmd: byte to send  
00032     *
00033     */   
00034     virtual void wr_cmd8(unsigned char cmd);
00035     
00036     /** Send 8bit data to display controller 
00037     *
00038     * @param data: byte to send   
00039     *
00040     */   
00041     virtual void wr_data8(unsigned char data);
00042     
00043     /** Send 2x8bit command to display controller 
00044     *
00045     * @param cmd: halfword to send  
00046     *
00047     */   
00048     virtual void wr_cmd16(unsigned short cmd);
00049     
00050     /** Send 2x8bit data to display controller 
00051     *
00052     * @param data: halfword to send   
00053     *
00054     */   
00055     virtual void wr_data16(unsigned short data);
00056     
00057     /** Send 16bit pixeldata to display controller 
00058     *
00059     * @param data: halfword to send   
00060     *
00061     */   
00062     virtual void wr_gram(unsigned short data);
00063     
00064     /** Send same 16bit pixeldata to display controller multiple times
00065     *
00066     * @param data: halfword to send
00067     * @param count: how many
00068     *
00069     */   
00070     virtual void wr_gram(unsigned short data, unsigned int count);
00071     
00072     /** Send array of pixeldata shorts to display controller
00073     *
00074     * @param data: unsigned short pixeldata array
00075     * @param lenght: lenght (in shorts)
00076     *
00077     */   
00078     virtual void wr_grambuf(unsigned short* data, unsigned int lenght);
00079     
00080     /** Read 16bit pixeldata from display controller (with dummy cycle)
00081     *
00082     * @param convert true/false. Convert 18bit to 16bit, some controllers returns 18bit
00083     * @returns 16bit color
00084     */ 
00085     virtual unsigned short rd_gram(bool convert);
00086     
00087     /** Read 4x8bit register data (with dummy cycle)
00088     * @param reg the register to read
00089     * @returns data as uint
00090     * 
00091     */ 
00092     virtual unsigned int rd_reg_data32(unsigned char reg);
00093     
00094     /** Read 3x8bit ExtendedCommands register data
00095     * @param reg the register to read
00096     * @returns data as uint
00097     * @note EXTC regs (0xB0 to 0xFF) are read/write registers, for Parallel mode directly accessible in both directions
00098     */ 
00099     virtual unsigned int rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd);
00100     
00101     /** ILI932x specific, does a dummy read cycle, number of bits is protocol dependent
00102     * for PAR protocols: a signle RD bit toggle
00103     * for SPI8: 8clocks
00104     * for SPI16: 16 clocks
00105     */   
00106     virtual void dummyread ();
00107     
00108     /** ILI932x specific, select register for a successive write or read
00109     *
00110     * @param reg register to be selected
00111     * @param forread false = a write next (default), true = a read next
00112     * @note forread only used by SPI protocols
00113     */   
00114     virtual void reg_select(unsigned char reg, bool forread =false);
00115     
00116     /** ILI932x specific, write register with data
00117     *
00118     * @param reg register to write
00119     * @param data 16bit data
00120     */   
00121     virtual void reg_write(unsigned char reg, unsigned short data);
00122     
00123     /** ILI932x specific, read register
00124     *
00125     * @param reg register to be read
00126     * @returns 16bit register value
00127     */ 
00128     virtual unsigned short reg_read(unsigned char reg);
00129     
00130     /** HW reset sequence (without display init commands)   
00131     */
00132     virtual void hw_reset();
00133     
00134     /** Set ChipSelect high or low
00135     * @param enable 0/1   
00136     */
00137     virtual void BusEnable(bool enable);
00138   
00139    
00140 
00141 private:
00142 
00143     PortInOut _port;
00144     DigitalOut _CS; 
00145     DigitalOut _reset;
00146     DigitalOut _DC;
00147     DigitalOut _WR;
00148     DigitalOut _RD;
00149   
00150 };
00151 #endif
00152 
00153 #endif