madhu sudhana / Mbed OS newTFTLCD_

1.44 tft lcd display

Dependencies:   TFT_fonts mbed-os

Fork of newTFTLCD by madhu sudhana

hx8340bs.cpp@22:4c169297f374, 2013-01-26 (annotated)

Committer:
ttodorov
Date:
Sat Jan 26 04:36:46 2013 +0000
Revision:
22:4c169297f374
Parent:
20:4bdca8d8dadc 
- added PWM backlight control

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ttodorov 4:3ac4239f6c9c 1 /*
ttodorov 4:3ac4239f6c9c 2 * Copyright (C)2010-2012 Henning Karlsen. All right reserved.
ttodorov 4:3ac4239f6c9c 3 * Copyright (C)2012 Todor Todorov.
ttodorov 4:3ac4239f6c9c 4 *
ttodorov 4:3ac4239f6c9c 5 * This library is free software; you can redistribute it and/or
ttodorov 4:3ac4239f6c9c 6 * modify it under the terms of the GNU Lesser General Public
ttodorov 4:3ac4239f6c9c 7 * License as published by the Free Software Foundation; either
ttodorov 4:3ac4239f6c9c 8 * version 2.1 of the License, or (at your option) any later version.
ttodorov 4:3ac4239f6c9c 9 *
ttodorov 4:3ac4239f6c9c 10 * This library is distributed in the hope that it will be useful,
ttodorov 4:3ac4239f6c9c 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
ttodorov 4:3ac4239f6c9c 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
ttodorov 4:3ac4239f6c9c 13 * Lesser General Public License for more details.
ttodorov 4:3ac4239f6c9c 14 *
ttodorov 4:3ac4239f6c9c 15 * You should have received a copy of the GNU Lesser General Public
ttodorov 4:3ac4239f6c9c 16 * License along with this library; if not, write to:
ttodorov 4:3ac4239f6c9c 17 *
ttodorov 4:3ac4239f6c9c 18 * Free Software Foundation, Inc.
ttodorov 4:3ac4239f6c9c 19 * 51 Franklin St, 5th Floor, Boston, MA 02110-1301, USA
ttodorov 4:3ac4239f6c9c 20 *
ttodorov 4:3ac4239f6c9c 21 *********************************************************************/
ttodorov 4:3ac4239f6c9c 22 #include "hx8340bs.h"
ttodorov 4:3ac4239f6c9c 23 #include "helpers.h"
ttodorov 4:3ac4239f6c9c 24
ttodorov 22:4c169297f374 25 HX8340S_LCD::HX8340S_LCD( PinName CS, PinName RESET, PinName SCL, PinName SDI, PinName BL, backlight_t blType, float defaultBackLightLevel )
ttodorov 22:4c169297f374 26 : LCD( 176, 220, CS, NC, RESET, BL, blType, defaultBackLightLevel ), _lcd_pin_scl( SCL ), _lcd_pin_sdi( SDI )
ttodorov 4:3ac4239f6c9c 27 {
ttodorov 4:3ac4239f6c9c 28 }
ttodorov 9:58b328831d0a 29
ttodorov 12:d0978272a340 30 void HX8340S_LCD::Initialize( orientation_t orientation, colordepth_t colors )
ttodorov 4:3ac4239f6c9c 31 {
ttodorov 4:3ac4239f6c9c 32 _orientation = orientation;
ttodorov 12:d0978272a340 33 _colorDepth = colors;
ttodorov 4:3ac4239f6c9c 34
ttodorov 4:3ac4239f6c9c 35 wait_ms( 100 );
ttodorov 4:3ac4239f6c9c 36 _lcd_pin_reset = HIGH;
ttodorov 4:3ac4239f6c9c 37 wait_ms( 5 );
ttodorov 4:3ac4239f6c9c 38 _lcd_pin_reset = LOW;
ttodorov 4:3ac4239f6c9c 39 wait_ms( 15 );
ttodorov 4:3ac4239f6c9c 40 _lcd_pin_reset = HIGH;
ttodorov 4:3ac4239f6c9c 41 _lcd_pin_cs = HIGH;
ttodorov 4:3ac4239f6c9c 42 _lcd_pin_scl = HIGH;
ttodorov 4:3ac4239f6c9c 43 _lcd_pin_sdi = HIGH;
ttodorov 4:3ac4239f6c9c 44 if ( _lcd_pin_bl != 0 )
ttodorov 4:3ac4239f6c9c 45 *_lcd_pin_bl = HIGH;
ttodorov 22:4c169297f374 46 else if ( _bl_pwm != 0 )
ttodorov 22:4c169297f374 47 *_bl_pwm = _bl_pwm_default;
ttodorov 4:3ac4239f6c9c 48 wait_ms( 55 );
ttodorov 4:3ac4239f6c9c 49
ttodorov 4:3ac4239f6c9c 50 Activate();
ttodorov 12:d0978272a340 51 WriteCmd( 0xC1 ); // SETEXTCMD
ttodorov 4:3ac4239f6c9c 52 WriteByteData( 0xFF );
ttodorov 4:3ac4239f6c9c 53 WriteByteData( 0x83 );
ttodorov 4:3ac4239f6c9c 54 WriteByteData( 0x40 );
ttodorov 12:d0978272a340 55
ttodorov 12:d0978272a340 56 WriteCmd( 0x11 ); // SLPOUT
ttodorov 4:3ac4239f6c9c 57 wait_ms( 160 );
ttodorov 12:d0978272a340 58
ttodorov 4:3ac4239f6c9c 59 WriteCmd( 0xCA );
ttodorov 4:3ac4239f6c9c 60 WriteByteData( 0x70 );
ttodorov 4:3ac4239f6c9c 61 WriteByteData( 0x00 );
ttodorov 4:3ac4239f6c9c 62 WriteByteData( 0xD9 );
ttodorov 12:d0978272a340 63
ttodorov 12:d0978272a340 64 WriteCmd( 0xB0 ); // SETOSC
ttodorov 4:3ac4239f6c9c 65 WriteByteData( 0x01 );
ttodorov 4:3ac4239f6c9c 66 WriteByteData( 0x11 );
ttodorov 4:3ac4239f6c9c 67
ttodorov 4:3ac4239f6c9c 68 WriteCmd( 0xC9 );
ttodorov 4:3ac4239f6c9c 69 WriteByteData( 0x90 );
ttodorov 4:3ac4239f6c9c 70 WriteByteData( 0x49 );
ttodorov 4:3ac4239f6c9c 71 WriteByteData( 0x10 );
ttodorov 4:3ac4239f6c9c 72 WriteByteData( 0x28 );
ttodorov 4:3ac4239f6c9c 73 WriteByteData( 0x28 );
ttodorov 4:3ac4239f6c9c 74 WriteByteData( 0x10 );
ttodorov 4:3ac4239f6c9c 75 WriteByteData( 0x00 );
ttodorov 4:3ac4239f6c9c 76 WriteByteData( 0x06 );
ttodorov 4:3ac4239f6c9c 77 wait_ms( 20 );
ttodorov 12:d0978272a340 78
ttodorov 12:d0978272a340 79 WriteCmd( 0xC2 ); // SETGAMMAP
ttodorov 4:3ac4239f6c9c 80 WriteByteData( 0x60 );
ttodorov 4:3ac4239f6c9c 81 WriteByteData( 0x71 );
ttodorov 4:3ac4239f6c9c 82 WriteByteData( 0x01 );
ttodorov 4:3ac4239f6c9c 83 WriteByteData( 0x0E );
ttodorov 4:3ac4239f6c9c 84 WriteByteData( 0x05 );
ttodorov 4:3ac4239f6c9c 85 WriteByteData( 0x02 );
ttodorov 4:3ac4239f6c9c 86 WriteByteData( 0x09 );
ttodorov 4:3ac4239f6c9c 87 WriteByteData( 0x31 );
ttodorov 4:3ac4239f6c9c 88 WriteByteData( 0x0A );
ttodorov 4:3ac4239f6c9c 89
ttodorov 12:d0978272a340 90 WriteCmd( 0xc3 ); // SETGAMMAN
ttodorov 4:3ac4239f6c9c 91 WriteByteData( 0x67 );
ttodorov 4:3ac4239f6c9c 92 WriteByteData( 0x30 );
ttodorov 4:3ac4239f6c9c 93 WriteByteData( 0x61 );
ttodorov 4:3ac4239f6c9c 94 WriteByteData( 0x17 );
ttodorov 4:3ac4239f6c9c 95 WriteByteData( 0x48 );
ttodorov 4:3ac4239f6c9c 96 WriteByteData( 0x07 );
ttodorov 4:3ac4239f6c9c 97 WriteByteData( 0x05 );
ttodorov 4:3ac4239f6c9c 98 WriteByteData( 0x33 );
ttodorov 4:3ac4239f6c9c 99 wait_ms( 10 );
ttodorov 12:d0978272a340 100
ttodorov 12:d0978272a340 101 WriteCmd( 0xB5 ); // SETPWCTR5
ttodorov 4:3ac4239f6c9c 102 WriteByteData( 0x35 );
ttodorov 4:3ac4239f6c9c 103 WriteByteData( 0x20 );
ttodorov 4:3ac4239f6c9c 104 WriteByteData( 0x45 );
ttodorov 4:3ac4239f6c9c 105
ttodorov 12:d0978272a340 106 WriteCmd( 0xB4 ); // SETPWCTR4
ttodorov 4:3ac4239f6c9c 107 WriteByteData( 0x33 );
ttodorov 4:3ac4239f6c9c 108 WriteByteData( 0x25 );
ttodorov 4:3ac4239f6c9c 109 WriteByteData( 0x4c );
ttodorov 4:3ac4239f6c9c 110 wait_ms( 10 );
ttodorov 12:d0978272a340 111
ttodorov 12:d0978272a340 112 WriteCmd( 0x3A ); // COLMOD == color depth: 0x05 => 16bit, 0x06 => 18bit
ttodorov 12:d0978272a340 113 WriteByteData( _colorDepth == RGB16 ? 0x05 : 0x06 );
ttodorov 12:d0978272a340 114
ttodorov 12:d0978272a340 115 WriteCmd( 0x36 ); // MADCTL
ttodorov 12:d0978272a340 116 switch ( _orientation )
ttodorov 12:d0978272a340 117 {
ttodorov 12:d0978272a340 118 case LANDSCAPE: WriteByteData( 0xB8 ); break;
ttodorov 12:d0978272a340 119 case PORTRAIT_REV: WriteByteData( 0xDC ); break;
ttodorov 12:d0978272a340 120 case LANDSCAPE_REV: WriteByteData( 0x6C ); break;
ttodorov 12:d0978272a340 121 case PORTRAIT:
ttodorov 12:d0978272a340 122 default: WriteByteData( 0x08 ); break;
ttodorov 12:d0978272a340 123 }
ttodorov 12:d0978272a340 124
ttodorov 12:d0978272a340 125 WriteCmd( 0x29 ); // DISPON
ttodorov 4:3ac4239f6c9c 126 wait_ms( 10 );
ttodorov 12:d0978272a340 127
ttodorov 12:d0978272a340 128 ClearXY();
ttodorov 4:3ac4239f6c9c 129 Deactivate();
ttodorov 4:3ac4239f6c9c 130 }
ttodorov 4:3ac4239f6c9c 131
ttodorov 4:3ac4239f6c9c 132 void HX8340S_LCD::Sleep( void )
ttodorov 4:3ac4239f6c9c 133 {
ttodorov 4:3ac4239f6c9c 134 Activate();
ttodorov 4:3ac4239f6c9c 135 WriteCmd( 0x28 );
ttodorov 4:3ac4239f6c9c 136 wait_ms( 10 );
ttodorov 4:3ac4239f6c9c 137 WriteCmd( 0x10 );
ttodorov 4:3ac4239f6c9c 138 wait_ms( 125 );
ttodorov 22:4c169297f374 139 LCD::Sleep();
ttodorov 4:3ac4239f6c9c 140 Deactivate();
ttodorov 4:3ac4239f6c9c 141 }
ttodorov 4:3ac4239f6c9c 142
ttodorov 4:3ac4239f6c9c 143 void HX8340S_LCD::WakeUp( void )
ttodorov 4:3ac4239f6c9c 144 {
ttodorov 4:3ac4239f6c9c 145 Activate();
ttodorov 4:3ac4239f6c9c 146 WriteCmd( 0x29 );
ttodorov 4:3ac4239f6c9c 147 wait_ms( 10 );
ttodorov 4:3ac4239f6c9c 148 WriteCmd( 0x11 );
ttodorov 4:3ac4239f6c9c 149 wait_ms( 125 );
ttodorov 22:4c169297f374 150 LCD::WakeUp();
ttodorov 4:3ac4239f6c9c 151 Deactivate();
ttodorov 4:3ac4239f6c9c 152 }
ttodorov 4:3ac4239f6c9c 153
ttodorov 4:3ac4239f6c9c 154 void HX8340S_LCD::WriteCmd( unsigned short cmd )
ttodorov 4:3ac4239f6c9c 155 {
ttodorov 4:3ac4239f6c9c 156 _lcd_pin_sdi = LOW;
ttodorov 4:3ac4239f6c9c 157 pulseLow( _lcd_pin_scl );
ttodorov 4:3ac4239f6c9c 158 serializeByte( cmd & 0xFF );
ttodorov 4:3ac4239f6c9c 159 }
ttodorov 4:3ac4239f6c9c 160
ttodorov 4:3ac4239f6c9c 161 void HX8340S_LCD::WriteData( unsigned short data )
ttodorov 4:3ac4239f6c9c 162 {
ttodorov 4:3ac4239f6c9c 163 _lcd_pin_sdi = HIGH;
ttodorov 4:3ac4239f6c9c 164 pulseLow( _lcd_pin_scl );
ttodorov 4:3ac4239f6c9c 165 serializeByte( ( data >> 8 ) & 0xFF );
ttodorov 4:3ac4239f6c9c 166 _lcd_pin_sdi = HIGH;
ttodorov 4:3ac4239f6c9c 167 pulseLow( _lcd_pin_scl );
ttodorov 4:3ac4239f6c9c 168 serializeByte( data & 0xFF );
ttodorov 4:3ac4239f6c9c 169 }
ttodorov 4:3ac4239f6c9c 170
ttodorov 4:3ac4239f6c9c 171 void HX8340S_LCD::WriteByteData( unsigned char data )
ttodorov 4:3ac4239f6c9c 172 {
ttodorov 4:3ac4239f6c9c 173 _lcd_pin_sdi = HIGH;
ttodorov 4:3ac4239f6c9c 174 pulseLow( _lcd_pin_scl );
ttodorov 4:3ac4239f6c9c 175 serializeByte( data );
ttodorov 4:3ac4239f6c9c 176 }
ttodorov 4:3ac4239f6c9c 177
ttodorov 20:4bdca8d8dadc 178 void HX8340S_LCD::SetXY( unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2 )
ttodorov 4:3ac4239f6c9c 179 {
ttodorov 12:d0978272a340 180 WriteCmdData( 0x2A, x1 ); // CASET
ttodorov 4:3ac4239f6c9c 181 WriteData( x2 );
ttodorov 12:d0978272a340 182 WriteCmdData( 0x2B, y1 ); // PASET
ttodorov 4:3ac4239f6c9c 183 WriteData( y2 );
ttodorov 12:d0978272a340 184 WriteCmd( 0x2C ); // RAMWR
ttodorov 4:3ac4239f6c9c 185 }
ttodorov 4:3ac4239f6c9c 186
ttodorov 20:4bdca8d8dadc 187 void HX8340S_LCD::SetPixelColor( unsigned int color, colordepth_t mode )
ttodorov 10:69571adcfad5 188 {
ttodorov 20:4bdca8d8dadc 189 unsigned char r = 0, g = 0, b = 0;
ttodorov 20:4bdca8d8dadc 190 unsigned short clr;
ttodorov 12:d0978272a340 191 if ( _colorDepth == RGB16 )
ttodorov 12:d0978272a340 192 {
ttodorov 20:4bdca8d8dadc 193 switch ( mode )
ttodorov 20:4bdca8d8dadc 194 {
ttodorov 20:4bdca8d8dadc 195 case RGB16:
ttodorov 20:4bdca8d8dadc 196 WriteData( color & 0xFFFF );
ttodorov 20:4bdca8d8dadc 197 break;
ttodorov 20:4bdca8d8dadc 198 case RGB18:
ttodorov 20:4bdca8d8dadc 199 r = ( color >> 10 ) & 0xF8;
ttodorov 20:4bdca8d8dadc 200 g = ( color >> 4 ) & 0xFC;
ttodorov 20:4bdca8d8dadc 201 b = ( color >> 1 ) & 0x1F;
ttodorov 20:4bdca8d8dadc 202 clr = ( ( r | ( g >> 5 ) ) << 8 ) | ( ( g << 3 ) | b );
ttodorov 20:4bdca8d8dadc 203 WriteData( clr );
ttodorov 20:4bdca8d8dadc 204 break;
ttodorov 20:4bdca8d8dadc 205 case RGB24:
ttodorov 20:4bdca8d8dadc 206 r = ( color >> 16 ) & 0xF8;
ttodorov 20:4bdca8d8dadc 207 g = ( color >> 8 ) & 0xFC;
ttodorov 20:4bdca8d8dadc 208 b = color & 0xF8;
ttodorov 20:4bdca8d8dadc 209 clr = ( ( r | ( g >> 5 ) ) << 8 ) | ( ( g << 3 ) | ( b >> 3 ) );
ttodorov 20:4bdca8d8dadc 210 WriteData( clr );
ttodorov 20:4bdca8d8dadc 211 break;
ttodorov 20:4bdca8d8dadc 212 }
ttodorov 12:d0978272a340 213 }
ttodorov 15:af3cd35886fb 214 else if ( _colorDepth == RGB18 )
ttodorov 12:d0978272a340 215 {
ttodorov 20:4bdca8d8dadc 216 switch ( mode )
ttodorov 20:4bdca8d8dadc 217 {
ttodorov 20:4bdca8d8dadc 218 case RGB16:
ttodorov 20:4bdca8d8dadc 219 r = ( ( color >> 8 ) & 0xF8 ) | ( ( color & 0x8000 ) >> 13 );
ttodorov 20:4bdca8d8dadc 220 g = ( color >> 3 ) & 0xFC;
ttodorov 20:4bdca8d8dadc 221 b = ( ( color << 3 ) & 0xFC ) | ( ( color >> 3 ) & 0x01 );
ttodorov 20:4bdca8d8dadc 222 break;
ttodorov 20:4bdca8d8dadc 223 case RGB18:
ttodorov 20:4bdca8d8dadc 224 b = ( color << 2 ) & 0xFC;
ttodorov 20:4bdca8d8dadc 225 g = ( color >> 4 ) & 0xFC;
ttodorov 20:4bdca8d8dadc 226 r = ( color >> 10 ) & 0xFC;
ttodorov 20:4bdca8d8dadc 227 break;
ttodorov 20:4bdca8d8dadc 228 case RGB24:
ttodorov 20:4bdca8d8dadc 229 r = ( color >> 16 ) & 0xFC;
ttodorov 20:4bdca8d8dadc 230 g = ( color >> 8 ) & 0xFC;
ttodorov 20:4bdca8d8dadc 231 b = color & 0xFC;
ttodorov 20:4bdca8d8dadc 232 break;
ttodorov 20:4bdca8d8dadc 233 }
ttodorov 20:4bdca8d8dadc 234 WriteByteData( r );
ttodorov 20:4bdca8d8dadc 235 WriteByteData( g );
ttodorov 20:4bdca8d8dadc 236 WriteByteData( b );
ttodorov 12:d0978272a340 237 }
ttodorov 10:69571adcfad5 238 }
ttodorov 10:69571adcfad5 239
ttodorov 4:3ac4239f6c9c 240 void HX8340S_LCD::serializeByte( unsigned char data )
ttodorov 4:3ac4239f6c9c 241 {
ttodorov 4:3ac4239f6c9c 242 for ( int i = 0; i < 8; i++ )
ttodorov 4:3ac4239f6c9c 243 {
ttodorov 4:3ac4239f6c9c 244 if ( data & 0x80 ) _lcd_pin_sdi = HIGH;
ttodorov 4:3ac4239f6c9c 245 else _lcd_pin_sdi = LOW;
ttodorov 4:3ac4239f6c9c 246 pulseLow( _lcd_pin_scl );
ttodorov 4:3ac4239f6c9c 247 data = data << 1;
ttodorov 4:3ac4239f6c9c 248 }
ttodorov 4:3ac4239f6c9c 249 }