ili9325.cpp

00001 /*
00002  * Copyright (C)2010-2012 Henning Karlsen. All right reserved.
00003  * Copyright (C)2012-2013 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 "ili9325.h"
00023 #include "helpers.h"
00024 
00025 ILI9325_LCD::ILI9325_LCD( PinName CS, PinName RESET, PinName RS, PinName WR, BusOut* DATA_PORT, PinName BL, PinName RD, backlight_t blType, float defaultBackLightLevel )
00026     : LCD( 240, 320, 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 ILI9325_LCD::Initialize( orientation_t orientation, colordepth_t colors )
00034 {
00035     _orientation = orientation;
00036     _colorDepth = colors;
00037     
00038     _lcd_pin_reset = HIGH;
00039 //    wait_ms( 50 );
00040     wait_ms( 100 );
00041     _lcd_pin_reset = LOW;
00042 //    wait_ms( 100 );
00043     wait_ms( 200 );
00044     _lcd_pin_reset = HIGH;
00045 //    wait_ms( 1000 );
00046     wait_ms( 1000 );
00047     _lcd_pin_cs = HIGH;
00048     if ( _lcd_pin_bl != 0 )
00049         *_lcd_pin_bl = HIGH;
00050     else if ( _bl_pwm != 0 )
00051         *_bl_pwm = _bl_pwm_default;
00052     if ( _lcd_pin_rd != 0 )
00053         *_lcd_pin_rd = HIGH;
00054     _lcd_pin_wr = HIGH;
00055 //    wait_ms( 15 );
00056     wait_ms( 50 );
00057     
00058     Activate();
00059     
00060     short drivOut = 0;
00061     short entryMod = 0;
00062     short gateScan = 0x2700;
00063     switch ( _orientation )
00064     {
00065         case LANDSCAPE:
00066             drivOut = 0x0100;
00067             entryMod |= 0x0038;
00068             gateScan |= 0x0000;
00069             break;
00070             
00071         case LANDSCAPE_REV:
00072             drivOut = 0x0000;
00073             entryMod |= 0x0038;
00074             gateScan |= 0x8000;
00075             break;
00076             
00077         case PORTRAIT_REV:
00078             drivOut = 0x0000;
00079             entryMod |= 0x0030;
00080             gateScan |= 0x0000;
00081             break;
00082             
00083         case PORTRAIT:
00084         default:
00085             drivOut = 0x0100;
00086             entryMod |= 0x0030;
00087             gateScan |= 0x8000;
00088             break;
00089     }
00090     switch ( _colorDepth )
00091     {
00092         case RGB18:
00093             entryMod |= 0x9000;
00094             break;
00095             
00096         case RGB16:
00097         default:
00098             entryMod |= 0x1000;
00099             break;
00100     }
00101     
00102 //    WriteCmdData( 0xE5, 0x78F0 ); // set SRAM internal timing
00103     WriteCmdData( 0xE5, 0x8000 ); // set SRAM internal timing
00104     WriteCmdData( 0x00, 0x0000 ); // set Driver Output Control
00105     WriteCmdData( 0x01, drivOut ); // set Driver Output Control
00106 //    WriteCmdData( 0x02, 0x0200 ); // set 1 line inversion
00107     WriteCmdData( 0x02, 0x0700 ); // set 1 line inversion
00108     WriteCmdData( 0x03, entryMod ); // set GRAM write direction and BGR=1.
00109     WriteCmdData( 0x04, 0x0000 ); // Resize register
00110 //    WriteCmdData( 0x08, 0x0207 ); // set the back porch and front porch
00111     WriteCmdData( 0x08, 0x0202 ); // set the back porch and front porch
00112 
00113     WriteCmdData( 0x09, 0x0000 ); // set non-display area refresh cycle ISC[3:0]
00114     WriteCmdData( 0x0A, 0x0000 ); // FMARK function
00115     WriteCmdData( 0x0C, 0x0000 ); // RGB interface setting
00116     WriteCmdData( 0x0D, 0x0000 ); // Frame marker Position
00117     WriteCmdData( 0x0F, 0x0000 ); // RGB interface polarity
00118     // ----------- Power On sequence ----------- //
00119     WriteCmdData( 0x10, 0x0000 ); // SAP, BT[3:0], AP, DSTB, SLP, STB
00120 //    WriteCmdData( 0x11, 0x0007 ); // DC1[2:0], DC0[2:0], VC[2:0]
00121     WriteCmdData( 0x11, 0x0000 ); // DC1[2:0], DC0[2:0], VC[2:0]
00122     WriteCmdData( 0x12, 0x0000 ); // VREG1OUT voltage
00123     WriteCmdData( 0x13, 0x0000 ); // VDV[4:0] for VCOM amplitude
00124 //    WriteCmdData( 0x07, 0x0001 );
00125     wait_ms( 200 ); // Dis-charge capacitor power voltage
00126 
00127 //    WriteCmdData( 0x10, 0x1690 ); // SAP, BT[3:0], AP, DSTB, SLP, STB
00128     WriteCmdData( 0x10, 0x17B0 ); // SAP, BT[3:0], AP, DSTB, SLP, STB
00129 //    WriteCmdData( 0x11, 0x0227 ); // Set DC1[2:0], DC0[2:0], VC[2:0]
00130     WriteCmdData( 0x11, 0x0037 ); // Set DC1[2:0], DC0[2:0], VC[2:0]
00131     wait_ms( 50 ); // Delay 50ms
00132 
00133 //    WriteCmdData( 0x12, 0x000D ); // 0012
00134     WriteCmdData( 0x12, 0x0138 ); // 0012
00135     wait_ms( 50 ); // Delay 50ms
00136 
00137 //    WriteCmdData( 0x13, 0x1200 ); // VDV[4:0] for VCOM amplitude
00138     WriteCmdData( 0x13, 0x1700 ); // VDV[4:0] for VCOM amplitude
00139 //    WriteCmdData( 0x29, 0x000A ); // 04  VCM[5:0] for VCOMH
00140     WriteCmdData( 0x29, 0x000D ); // 04  VCM[5:0] for VCOMH
00141     WriteCmdData( 0x2B, 0x000D ); // Set Frame Rate
00142     wait_ms( 50 ); // Delay 50ms
00143 
00144     WriteCmdData( 0x20, 0x0000 ); // GRAM horizontal Address
00145     WriteCmdData( 0x21, 0x0000 ); // GRAM Vertical Address
00146 
00147     // ----------- Adjust the Gamma Curve ----------//
00148 //    WriteCmdData( 0x30, 0x0000 );
00149     WriteCmdData( 0x30, 0x0001 );
00150 //    WriteCmdData( 0x31, 0x0404 );
00151     WriteCmdData( 0x31, 0x0606 );
00152 //    WriteCmdData( 0x32, 0x0003 );
00153     WriteCmdData( 0x32, 0x0304 );
00154 //new line
00155     WriteCmdData( 0x33, 0x0202 );
00156     WriteCmdData( 0x34, 0x0202 );
00157 //    WriteCmdData( 0x35, 0x0405 );
00158     WriteCmdData( 0x35, 0x0103 );
00159 
00160 //    WriteCmdData( 0x36, 0x0808 );
00161     WriteCmdData( 0x36, 0x011D );
00162 //    WriteCmdData( 0x37, 0x0407 );
00163     WriteCmdData( 0x37, 0x0404 );
00164 //    WriteCmdData( 0x38, 0x0303 );
00165     WriteCmdData( 0x38, 0x0404 );
00166 //    WriteCmdData( 0x39, 0x0707 );
00167     WriteCmdData( 0x39, 0x0404 );
00168 //    WriteCmdData( 0x3C, 0x0504 );
00169     WriteCmdData( 0x3C, 0x0700 );
00170 //    WriteCmdData( 0x3D, 0x0808 );
00171     WriteCmdData( 0x3D, 0x0A1F );
00172 
00173     //------------------ Set GRAM area ---------------//
00174     WriteCmdData( 0x50, 0x0000 ); // Horizontal GRAM Start Address
00175     WriteCmdData( 0x51, 0x00EF ); // Horizontal GRAM End Address
00176     WriteCmdData( 0x52, 0x0000 ); // Vertical GRAM Start Address
00177     WriteCmdData( 0x53, 0x013F ); // Vertical GRAM Start Address
00178     WriteCmdData( 0x60, gateScan ); // Gate Scan Line (0xA700)
00179 //    WriteCmdData( 0x61, 0x0000 ); // NDL,VLE, REV
00180     WriteCmdData( 0x61, 0x0001 ); // NDL,VLE, REV
00181     WriteCmdData( 0x6A, 0x0000 ); // set scrolling line
00182     //-------------- Partial Display Control ---------//
00183     WriteCmdData( 0x80, 0x0000 );
00184     WriteCmdData( 0x81, 0x0000 );
00185     WriteCmdData( 0x82, 0x0000 );
00186     WriteCmdData( 0x83, 0x0000 );
00187     WriteCmdData( 0x84, 0x0000 );
00188     WriteCmdData( 0x85, 0x0000 );
00189     //-------------- Panel Control -------------------//
00190     WriteCmdData( 0x90, 0x0010 ); 
00191     WriteCmdData( 0x92, 0x0000 );
00192 //new lines
00193     WriteCmdData( 0x93, 0x0003 );
00194     WriteCmdData( 0x95, 0x0101 );
00195     WriteCmdData( 0x97, 0x0000 );
00196     WriteCmdData( 0x98, 0x0000 );
00197 
00198 //    WriteCmdData( 0x07, 0x0133 ); // 262K color and display ON
00199     WriteCmdData( 0x07, 0x0021 ); // 262K color and display ON
00200     WriteCmdData( 0x07, 0x0031 ); // 262K color and display ON
00201     WriteCmdData( 0x07, 0x0173 ); // 262K color and display ON
00202 //new line
00203     wait_ms( 50 ); // Delay 50ms    
00204     Deactivate();
00205 }
00206 
00207 void ILI9325_LCD::Sleep( void )
00208 {
00209     Activate();
00210     WriteCmdData( 0x10, 0x1692 ); // enter sleep mode
00211     wait_ms( 200 );
00212     LCD::Sleep();
00213     Deactivate();
00214 }
00215 
00216 void ILI9325_LCD::WakeUp( void )
00217 {
00218     Activate();
00219     WriteCmdData( 0x10, 0x1690 ); // exit sleep mode
00220     wait_ms( 200 );
00221     LCD::WakeUp();
00222     Deactivate();
00223 }
00224 
00225 void ILI9325_LCD::WriteCmd( unsigned short cmd )
00226 {
00227 
00228     unsigned short u,l;
00229     u = (cmd>>8) & 0xFF;
00230     l = cmd & 0xFF;
00231 
00232 //New
00233     _lcd_pin_cs = LOW;
00234 //
00235     _lcd_pin_rs = LOW;
00236 
00237 //New
00238     *_lcd_pin_rd = HIGH;    
00239     _lcd_pin_wr = HIGH;  
00240 //
00241     _lcd_port->write( u );
00242     pulseLow( _lcd_pin_wr );
00243 
00244     _lcd_port->write( l );
00245     pulseLow( _lcd_pin_wr );
00246 
00247 //New
00248     _lcd_pin_cs = HIGH;
00249 //
00250 }
00251 
00252 void ILI9325_LCD::WriteData( unsigned short data )
00253 {
00254     unsigned short u,l;
00255     u = (data>>8) & 0xFF;
00256     l = data & 0xFF;
00257     
00258 //New
00259     _lcd_pin_cs = LOW;
00260 //
00261     _lcd_pin_rs = HIGH;
00262 //New
00263     *_lcd_pin_rd = HIGH;    
00264     _lcd_pin_wr = HIGH;  
00265 //
00266     _lcd_port->write( u );
00267     pulseLow( _lcd_pin_wr );
00268 
00269     _lcd_port->write( l );
00270     pulseLow( _lcd_pin_wr );
00271 
00272 //New
00273     _lcd_pin_cs = HIGH;
00274 //
00275 }
00276 
00277 void ILI9325_LCD::SetXY( unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2 )
00278 {
00279     switch ( _orientation )
00280     {
00281         case LANDSCAPE:
00282         case LANDSCAPE_REV:
00283             WriteCmdData( 0x20, y1 );
00284             WriteCmdData( 0x21, x1 );
00285             WriteCmdData( 0x50, y1 );
00286             WriteCmdData( 0x52, x1 );
00287             WriteCmdData( 0x51, y2 );
00288             WriteCmdData( 0x53, x2 );
00289             break;
00290             
00291         case PORTRAIT_REV:
00292         case PORTRAIT:
00293         default:
00294             WriteCmdData( 0x20, x1 );
00295             WriteCmdData( 0x21, y1 );
00296             WriteCmdData( 0x50, x1 );
00297             WriteCmdData( 0x52, y1 );
00298             WriteCmdData( 0x51, x2 );
00299             WriteCmdData( 0x53, y2 );
00300             break;
00301     }
00302     WriteCmd( 0x22 );
00303 }
00304 
00305 void ILI9325_LCD::SetPixelColor( unsigned int color, colordepth_t mode )
00306 {
00307     unsigned char r, g, b;
00308     unsigned short clr;
00309     r = g = b = 0;
00310     if ( _colorDepth == RGB16 )
00311     {
00312         switch ( mode )
00313         {
00314             case RGB16:
00315                 WriteData( color & 0xFFFF );
00316                 break;
00317             case RGB18:
00318                 r = ( color >> 10 ) & 0xF8;
00319                 g = ( color >> 4 ) & 0xFC;
00320                 b = ( color >> 1 ) & 0x1F;
00321                 clr = ( ( r | ( g >> 5 ) ) << 8 ) | ( ( g << 3 ) | b );
00322                 WriteData( clr );
00323                 break;
00324             case RGB24:
00325                 r = ( color >> 16 ) & 0xF8;
00326                 g = ( color >> 8 ) & 0xFC;
00327                 b = color & 0xF8;
00328                 clr = ( ( r | ( g >> 5 ) ) << 8 ) | ( ( g << 3 ) | ( b >> 3 ) );
00329                 WriteData( clr );
00330                 break;
00331         }
00332     }
00333     else if ( _colorDepth == RGB18 )
00334     {
00335         switch ( mode )
00336         {
00337             case RGB16:
00338                 r = ( ( color >> 8 ) & 0xF8 ) | ( ( color & 0x8000 ) >> 13 );
00339                 g = ( color >> 3 ) & 0xFC;
00340                 b = ( ( color << 3 ) & 0xFC ) | ( ( color >> 3 ) & 0x01 );
00341                 break;
00342             case RGB18:
00343                 b = ( color << 2 ) & 0xFC;
00344                 g = ( color >> 4 ) & 0xFC;
00345                 r = ( color >> 10 ) & 0xFC;
00346                 break;
00347             case RGB24:
00348                 r = ( color >> 16 ) & 0xFC;
00349                 g = ( color >> 8 ) & 0xFC;
00350                 b = color & 0xFC;
00351                 break;
00352         }
00353         clr = ( r << 8 ) | ( g << 2 ) | ( b >> 4 );
00354         WriteData( clr );
00355         WriteData( b << 4 );
00356     }
00357 }