hx8352a.cpp

00001 /*
00002  * Copyright (C)2010-2012 Henning Karlsen. All right reserved.
00003  * Copyright (C)2012 Todor Todorov.
00004  *
00005  * This library is free software; you can redistribute it and/or
00006  * modify it under the terms of the GNU Lesser General Public
00007  * License as published by the Free Software Foundation; either
00008  * version 2.1 of the License, or (at your option) any later version.
00009  *
00010  * This library is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013  * Lesser General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU Lesser General Public
00016  * License along with this library; if not, write to:
00017  *
00018  * Free Software Foundation, Inc.
00019  * 51 Franklin St, 5th Floor, Boston, MA 02110-1301, USA
00020  *
00021  *********************************************************************/
00022 #include "hx8352a.h"
00023 #include "helpers.h"
00024 
00025 HX8352A_LCD::HX8352A_LCD( PinName CS, PinName RESET, PinName RS, PinName WR, BusOut* DATA_PORT, PinName BL, PinName RD, backlight_t blType, float defaultBackLightLevel )
00026     : LCD( 240, 400, CS, RS, RESET, BL, blType, defaultBackLightLevel ), _lcd_pin_wr( WR )
00027 {
00028     _lcd_port = DATA_PORT;
00029     if ( RD != NC ) _lcd_pin_rd = new DigitalOut( RD );
00030     else _lcd_pin_rd = 0;
00031 }
00032 
00033 void HX8352A_LCD::Initialize( orientation_t orientation, colordepth_t colors )
00034 {
00035     _orientation = orientation;
00036     _colorDepth = colors;
00037     
00038     wait_ms( 100 );
00039     _lcd_pin_reset = HIGH;
00040     wait_ms( 50 );
00041     _lcd_pin_reset = LOW;
00042     wait_ms( 50 );
00043     _lcd_pin_reset = HIGH;
00044     _lcd_pin_cs = HIGH;
00045     //_lcd_pin_rd = HIGH;
00046      if ( _lcd_pin_bl != 0 )
00047         *_lcd_pin_bl = HIGH;
00048     else if ( _bl_pwm != 0 )
00049         *_bl_pwm = _bl_pwm_default;
00050     _lcd_pin_wr = HIGH;
00051     wait_ms( 55 );
00052     
00053     Activate();
00054     Activate();
00055     WriteCmdData( 0x83, 0x0002 );   //TESTM=1 
00056     
00057     WriteCmdData( 0x85, 0x0003 );  //VDC_SEL=011
00058     WriteCmdData( 0x8B, 0x0001 );
00059     WriteCmdData( 0x8C, 0x0093 ); //STBA[7]=1,STBA[5:4]=01,STBA[1:0]=11
00060     
00061     WriteCmdData( 0x91, 0x0001 ); //DCDC_SYNC=1
00062     
00063     WriteCmdData( 0x83, 0x0000 );
00064     //WriteCmdData( 0x00, 0x0001 ); //TESTM=0
00065     
00066     //Gamma Setting   
00067     WriteCmdData( 0x3E, 0x00B0);
00068     WriteCmdData( 0x3F, 0x0003 );
00069     WriteCmdData( 0x40, 0x0010 );
00070     WriteCmdData( 0x41, 0x0056 );
00071     WriteCmdData( 0x42, 0x0013 );
00072     WriteCmdData( 0x43, 0x0046 );
00073     WriteCmdData( 0x44, 0x0023 );
00074     WriteCmdData( 0x45, 0x0076 );
00075     WriteCmdData( 0x46, 0x0000 );
00076     WriteCmdData( 0x47, 0x005E );
00077     WriteCmdData( 0x48, 0x004F );
00078     WriteCmdData( 0x49, 0x0040 );
00079 
00080     //**********Power On sequence************
00081     WriteCmdData( 0x17, 0x0091 );
00082     
00083     WriteCmdData( 0x2B, 0x00F9 );
00084     wait_ms( 15 );
00085     
00086     WriteCmdData( 0x1B, 0x0014 );
00087     
00088     WriteCmdData( 0x1A, 0x0011 );
00089     
00090     WriteCmdData( 0x1C, 0x0006 );
00091     
00092     WriteCmdData( 0x1F, 0x0042 );
00093     wait_ms( 20 );
00094     
00095     WriteCmdData( 0x19, 0x000A );
00096     
00097     WriteCmdData( 0x19, 0x001A );
00098     wait_ms( 40 );
00099     
00100     WriteCmdData( 0x19, 0x0012 );
00101     wait_ms( 40 );
00102     
00103     WriteCmdData( 0x1E, 0x0027 );
00104     wait_ms( 100 );
00105     
00106     //**********DISPLAY ON SETTING***********
00107 
00108     WriteCmdData( 0x24, 0x0060 );
00109 
00110     WriteCmdData( 0x3D, 0x0040 );
00111 
00112     WriteCmdData( 0x34, 0x0038 );
00113 
00114     WriteCmdData( 0x35, 0x0038 );
00115 
00116     WriteCmdData( 0x24, 0x0038 );
00117     wait_ms( 40 );
00118 
00119     WriteCmdData( 0x24, 0x003C );
00120 
00121     //WriteCmdData( 0x16, 0x00B8 );
00122 
00123     WriteCmdData( 0x01, 0x0006 );
00124 
00125     WriteCmdData( 0x55, 0x0000 );
00126 
00127     WriteCmdData( 0x02, 0x0000 );
00128     WriteCmdData( 0x03, 0x0000 );
00129     WriteCmdData( 0x04, 0x0000 );
00130     WriteCmdData( 0x05, 0x00EF );
00131 
00132     WriteCmdData( 0x06, 0x0000 );
00133     WriteCmdData( 0x07, 0x0000 );
00134     WriteCmdData( 0x08, 0x0001 );
00135     WriteCmdData( 0x09, 0x008F );
00136     
00137     
00138     WriteCmd( 0x16 );
00139     switch ( _orientation )
00140     {
00141         case LANDSCAPE: WriteData( 0xA8 ); break;
00142         case PORTRAIT_REV: WriteData( 0xDC ); break;
00143         case LANDSCAPE_REV: WriteData( 0x6C ); break;
00144         case PORTRAIT:
00145         default: WriteData( 0x08 ); break;
00146     }
00147     
00148     WriteCmd( 0x22 );
00149     wait_ms( 10 );
00150     
00151     ClearXY();
00152     Deactivate();
00153 }
00154 
00155 /*
00156 void HX8352A_LCD::Sleep( void )
00157 {
00158     Activate();
00159     WriteCmd( 0x28 );
00160     wait_ms( 10 );
00161     WriteCmd( 0x10 );
00162     wait_ms( 125 );
00163     LCD::Sleep();
00164     Deactivate();
00165 }
00166 
00167 void HX8352A_LCD::WakeUp( void )
00168 {
00169     Activate();
00170     WriteCmd( 0x29 );
00171     wait_ms( 10 );
00172     WriteCmd( 0x11 );
00173     wait_ms( 125 );
00174     LCD::WakeUp();
00175     Deactivate();
00176 }
00177 */
00178 
00179 void HX8352A_LCD::WriteCmd( unsigned short cmd )
00180 {
00181     _lcd_pin_rs = LOW;
00182     _lcd_port->write( cmd );
00183     pulseLow( _lcd_pin_wr );}
00184 
00185 void HX8352A_LCD::WriteData( unsigned short data )
00186 {
00187     _lcd_pin_rs = HIGH;
00188     _lcd_port->write( data );
00189     pulseLow( _lcd_pin_wr );
00190 }
00191 
00192 void HX8352A_LCD::SetXY( unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2 )
00193 {
00194     switch ( _orientation ) {
00195         case LANDSCAPE:
00196         case LANDSCAPE_REV:
00197             WriteCmdData( 0x02,x1>>8 );
00198             WriteCmdData( 0x03,x1 );
00199             WriteCmdData( 0x04,x2>>8 );
00200             WriteCmdData( 0x05,x2 );
00201             WriteCmdData( 0x06,y1>>8 );
00202             WriteCmdData( 0x07,y1 );
00203             WriteCmdData( 0x08,y2>>8 );
00204             WriteCmdData( 0x09,y2 );
00205             break;
00206             
00207         case PORTRAIT_REV:
00208         case PORTRAIT:
00209         default:
00210             WriteCmdData( 0x02,x1>>8 );
00211             WriteCmdData( 0x03,x1 );
00212             WriteCmdData( 0x04,x2>>8 );
00213             WriteCmdData( 0x05,x2 );
00214             WriteCmdData( 0x06,y1>>8 );
00215             WriteCmdData( 0x07,y1 );
00216             WriteCmdData( 0x08,y2>>8 );
00217             WriteCmdData( 0x09,y2 );
00218             break;
00219     }
00220     WriteCmd( 0x22 ); // RAMWR
00221 }
00222 
00223 void HX8352A_LCD::SetPixelColor( unsigned int color, colordepth_t mode )
00224 {
00225     unsigned char r = 0, g = 0, b = 0;
00226     unsigned short clr;
00227     if ( _colorDepth == RGB16 )
00228     {
00229         switch ( mode )
00230         {
00231             case RGB16:
00232                 WriteData( color & 0xFFFF );
00233                 break;
00234             case RGB18:
00235                 r = ( color >> 10 ) & 0xF8;
00236                 g = ( color >> 4 ) & 0xFC;
00237                 b = ( color >> 1 ) & 0x1F;
00238                 clr = ( ( r | ( g >> 5 ) ) << 8 ) | ( ( g << 3 ) | b );
00239                 WriteData( clr );
00240                 break;
00241             case RGB24:
00242                 r = ( color >> 16 ) & 0xF8;
00243                 g = ( color >> 8 ) & 0xFC;
00244                 b = color & 0xF8;
00245                 clr = ( ( r | ( g >> 5 ) ) << 8 ) | ( ( g << 3 ) | ( b >> 3 ) );
00246                 WriteData( clr );
00247                 break;
00248         }
00249     }
00250     else if ( _colorDepth == RGB18 )
00251     {
00252         switch ( mode )
00253         {
00254             case RGB16:
00255                 r = ( ( color >> 8 ) & 0xF8 ) | ( ( color & 0x8000 ) >> 13 );
00256                 g = ( color >> 3 ) & 0xFC;
00257                 b = ( ( color << 3 ) & 0xFC ) | ( ( color >> 3 ) & 0x01 );
00258                 break;
00259             case RGB18:
00260                 b = ( color << 2 ) & 0xFC;
00261                 g = ( color >> 4 ) & 0xFC;
00262                 r = ( color >> 10 ) & 0xFC;
00263                 break;
00264             case RGB24:
00265                 r = ( color >> 16 ) & 0xFC;
00266                 g = ( color >> 8 ) & 0xFC;
00267                 b = color & 0xFC;
00268                 break;
00269         }
00270         WriteData( r );
00271         WriteData( g );
00272         WriteData( b );
00273     }
00274 }
00275