ili9328.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 "ili9328.h"
00023 #include "helpers.h"
00024 
00025 ILI9328_LCD::ILI9328_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 ILI9328_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     _lcd_pin_reset = LOW;
00041     wait_ms( 100 );
00042     _lcd_pin_reset = HIGH;
00043     wait_ms( 1000 );
00044     _lcd_pin_cs = HIGH;
00045     if ( _lcd_pin_bl != 0 )
00046         *_lcd_pin_bl = HIGH;
00047     else if ( _bl_pwm != 0 )
00048         *_bl_pwm = _bl_pwm_default;
00049     if ( _lcd_pin_rd != 0 )
00050         *_lcd_pin_rd = HIGH;
00051     _lcd_pin_wr = HIGH;
00052     wait_ms( 15 );
00053     
00054     Activate();
00055     
00056     short drivOut = 0;
00057     short entryMod = 0;
00058     short gateScan = 0x2700;
00059     switch ( _orientation )
00060     {
00061         case LANDSCAPE:
00062             drivOut = 0x0100;
00063             entryMod |= 0x0038;
00064             gateScan |= 0x0000;
00065             break;
00066             
00067         case LANDSCAPE_REV:
00068             drivOut = 0x0000;
00069             entryMod |= 0x0038;
00070             gateScan |= 0x8000;
00071             break;
00072             
00073         case PORTRAIT_REV:
00074             drivOut = 0x0000;
00075             entryMod |= 0x0030;
00076             gateScan |= 0x0000;
00077             break;
00078             
00079         case PORTRAIT:
00080         default:
00081             drivOut = 0x0100;
00082             entryMod |= 0x0030;
00083             gateScan |= 0x8000;
00084             break;
00085     }
00086     switch ( _colorDepth )
00087     {
00088         case RGB18:
00089             entryMod |= 0x9000;
00090             break;
00091             
00092         case RGB16:
00093         default:
00094             entryMod |= 0x1000;
00095             break;
00096     }
00097     
00098     WriteCmdData( 0xE5, 0x78F0 ); // set SRAM internal timing
00099     WriteCmdData( 0x01, drivOut ); // set Driver Output Control
00100     WriteCmdData( 0x02, 0x0200 ); // set 1 line inversion
00101     WriteCmdData( 0x03, entryMod ); // set GRAM write direction and BGR=1.
00102     WriteCmdData( 0x04, 0x0000 ); // Resize register
00103     WriteCmdData( 0x08, 0x0207 ); // set the back porch and front porch
00104     WriteCmdData( 0x09, 0x0000 ); // set non-display area refresh cycle ISC[3:0]
00105     WriteCmdData( 0x0A, 0x0000 ); // FMARK function
00106     WriteCmdData( 0x0C, 0x0000 ); // RGB interface setting
00107     WriteCmdData( 0x0D, 0x0000 ); // Frame marker Position
00108     WriteCmdData( 0x0F, 0x0000 ); // RGB interface polarity
00109     // ----------- Power On sequence ----------- //
00110     WriteCmdData( 0x10, 0x0000 ); // SAP, BT[3:0], AP, DSTB, SLP, STB
00111     WriteCmdData( 0x11, 0x0007 ); // DC1[2:0], DC0[2:0], VC[2:0]
00112     WriteCmdData( 0x12, 0x0000 ); // VREG1OUT voltage
00113     WriteCmdData( 0x13, 0x0000 ); // VDV[4:0] for VCOM amplitude
00114     WriteCmdData( 0x07, 0x0001 );
00115     wait_ms( 200 ); // Dis-charge capacitor power voltage
00116     WriteCmdData( 0x10, 0x1690 ); // SAP, BT[3:0], AP, DSTB, SLP, STB
00117     WriteCmdData( 0x11, 0x0227 ); // Set DC1[2:0], DC0[2:0], VC[2:0]
00118     wait_ms( 50 ); // Delay 50ms
00119     WriteCmdData( 0x12, 0x000D ); // 0012
00120     wait_ms( 50 ); // Delay 50ms
00121     WriteCmdData( 0x13, 0x1200 ); // VDV[4:0] for VCOM amplitude
00122     WriteCmdData( 0x29, 0x000A ); // 04  VCM[5:0] for VCOMH
00123     WriteCmdData( 0x2B, 0x000D ); // Set Frame Rate
00124     wait_ms( 50 ); // Delay 50ms
00125     WriteCmdData( 0x20, 0x0000 ); // GRAM horizontal Address
00126     WriteCmdData( 0x21, 0x0000 ); // GRAM Vertical Address
00127     // ----------- Adjust the Gamma Curve ----------//
00128     WriteCmdData( 0x30, 0x0000 );
00129     WriteCmdData( 0x31, 0x0404 );
00130     WriteCmdData( 0x32, 0x0003 );
00131     WriteCmdData( 0x35, 0x0405 );
00132     WriteCmdData( 0x36, 0x0808 );
00133     WriteCmdData( 0x37, 0x0407 );
00134     WriteCmdData( 0x38, 0x0303 );
00135     WriteCmdData( 0x39, 0x0707 );
00136     WriteCmdData( 0x3C, 0x0504 );
00137     WriteCmdData( 0x3D, 0x0808 );
00138     //------------------ Set GRAM area ---------------//
00139     WriteCmdData( 0x50, 0x0000 ); // Horizontal GRAM Start Address
00140     WriteCmdData( 0x51, 0x00EF ); // Horizontal GRAM End Address
00141     WriteCmdData( 0x52, 0x0000 ); // Vertical GRAM Start Address
00142     WriteCmdData( 0x53, 0x013F ); // Vertical GRAM Start Address
00143     WriteCmdData( 0x60, gateScan ); // Gate Scan Line (0xA700)
00144     WriteCmdData( 0x61, 0x0000 ); // NDL,VLE, REV
00145     WriteCmdData( 0x6A, 0x0000 ); // set scrolling line
00146     //-------------- Partial Display Control ---------//
00147     WriteCmdData( 0x80, 0x0000 );
00148     WriteCmdData( 0x81, 0x0000 );
00149     WriteCmdData( 0x82, 0x0000 );
00150     WriteCmdData( 0x83, 0x0000 );
00151     WriteCmdData( 0x84, 0x0000 );
00152     WriteCmdData( 0x85, 0x0000 );
00153     //-------------- Panel Control -------------------//
00154     WriteCmdData( 0x90, 0x0010 ); 
00155     WriteCmdData( 0x92, 0x0000 );
00156     WriteCmdData( 0x07, 0x0133 ); // 262K color and display ON
00157     
00158     Deactivate();
00159 }
00160 
00161 void ILI9328_LCD::Sleep( void )
00162 {
00163     Activate();
00164     WriteCmdData( 0x10, 0x1692 ); // enter sleep mode
00165     wait_ms( 200 );
00166     LCD::Sleep();
00167     Deactivate();
00168 }
00169 
00170 void ILI9328_LCD::WakeUp( void )
00171 {
00172     Activate();
00173     WriteCmdData( 0x10, 0x1690 ); // exit sleep mode
00174     wait_ms( 200 );
00175     LCD::WakeUp();
00176     Deactivate();
00177 }
00178 
00179 void ILI9328_LCD::WriteCmd( unsigned short cmd )
00180 {
00181     _lcd_pin_rs = LOW;
00182     _lcd_port->write( cmd );
00183     pulseLow( _lcd_pin_wr );
00184 }
00185 
00186 void ILI9328_LCD::WriteData( unsigned short data )
00187 {
00188     _lcd_pin_rs = HIGH;
00189     _lcd_port->write( data );
00190     pulseLow( _lcd_pin_wr );
00191 }
00192 
00193 void ILI9328_LCD::SetXY( unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2 )
00194 {
00195     switch ( _orientation )
00196     {
00197         case LANDSCAPE:
00198         case LANDSCAPE_REV:
00199             WriteCmdData( 0x20, y1 );
00200             WriteCmdData( 0x21, x1 );
00201             WriteCmdData( 0x50, y1 );
00202             WriteCmdData( 0x52, x1 );
00203             WriteCmdData( 0x51, y2 );
00204             WriteCmdData( 0x53, x2 );
00205             break;
00206             
00207         case PORTRAIT_REV:
00208         case PORTRAIT:
00209         default:
00210             WriteCmdData( 0x20, x1 );
00211             WriteCmdData( 0x21, y1 );
00212             WriteCmdData( 0x50, x1 );
00213             WriteCmdData( 0x52, y1 );
00214             WriteCmdData( 0x51, x2 );
00215             WriteCmdData( 0x53, y2 );
00216             break;
00217     }
00218     WriteCmd( 0x22 );
00219 }
00220 
00221 void ILI9328_LCD::SetPixelColor( unsigned int color, colordepth_t mode )
00222 {
00223     unsigned char r, g, b;
00224     unsigned short clr;
00225     r = g = b = 0;
00226     if ( _colorDepth == RGB16 )
00227     {
00228         switch ( mode )
00229         {
00230             case RGB16:
00231                 WriteData( color & 0xFFFF );
00232                 break;
00233             case RGB18:
00234                 r = ( color >> 10 ) & 0xF8;
00235                 g = ( color >> 4 ) & 0xFC;
00236                 b = ( color >> 1 ) & 0x1F;
00237                 clr = ( ( r | ( g >> 5 ) ) << 8 ) | ( ( g << 3 ) | b );
00238                 WriteData( clr );
00239                 break;
00240             case RGB24:
00241                 r = ( color >> 16 ) & 0xF8;
00242                 g = ( color >> 8 ) & 0xFC;
00243                 b = color & 0xF8;
00244                 clr = ( ( r | ( g >> 5 ) ) << 8 ) | ( ( g << 3 ) | ( b >> 3 ) );
00245                 WriteData( clr );
00246                 break;
00247         }
00248     }
00249     else if ( _colorDepth == RGB18 )
00250     {
00251         switch ( mode )
00252         {
00253             case RGB16:
00254                 r = ( ( color >> 8 ) & 0xF8 ) | ( ( color & 0x8000 ) >> 13 );
00255                 g = ( color >> 3 ) & 0xFC;
00256                 b = ( ( color << 3 ) & 0xFC ) | ( ( color >> 3 ) & 0x01 );
00257                 break;
00258             case RGB18:
00259                 b = ( color << 2 ) & 0xFC;
00260                 g = ( color >> 4 ) & 0xFC;
00261                 r = ( color >> 10 ) & 0xFC;
00262                 break;
00263             case RGB24:
00264                 r = ( color >> 16 ) & 0xFC;
00265                 g = ( color >> 8 ) & 0xFC;
00266                 b = color & 0xFC;
00267                 break;
00268         }
00269         clr = ( r << 8 ) | ( g << 2 ) | ( b >> 4 );
00270         WriteData( clr );
00271         WriteData( b << 4 );
00272     }
00273 }