Steffen Arntz / TFTLCD

This is a port of Henning Kralsen's UTFT library for Arduino/chipKIT to mbed, refactored to make full use of C inheritance and access control, in order to reduce work when implementing new drivers and at the same time make the code more readable and easier to maintain. As of now supported are SSD1289 (16-bit interface), HX8340-B (serial interface) and ST7735 (serial interface). Drivers for other controllers will be added as time and resources to acquire the displays to test the code permit.

Dependents:   UTFT_SSD1289

Fork of TFTLCD by Todor Todorov

hx8340bs.cpp@12:d0978272a340, 2012-12-11 (annotated)

Committer:
ttodorov
Date:
Tue Dec 11 18:11:14 2012 +0000
Revision:
12:d0978272a340
Parent:
10:69571adcfad5
Child:
15:af3cd35886fb
- integrated RGB16 and RGB18 color depth configuration/selection; - integrated HW rotation for the HX8340-B driver; - changed the bitmap drawing API; - TODO: no drawing of rotated or scaled bitmaps yet

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 4:3ac4239f6c9c 25 HX8340S_LCD::HX8340S_LCD( PinName CS, PinName RESET, PinName SCL, PinName SDI, PinName BL )
ttodorov 4:3ac4239f6c9c 26 : LCD( 176, 220, CS, NC, RESET ), _lcd_pin_scl( SCL ), _lcd_pin_sdi( SDI )
ttodorov 4:3ac4239f6c9c 27 {
ttodorov 4:3ac4239f6c9c 28 if ( BL != NC ) _lcd_pin_bl = new DigitalOut( BL );
ttodorov 4:3ac4239f6c9c 29 else _lcd_pin_bl = 0;
ttodorov 4:3ac4239f6c9c 30 }
ttodorov 9:58b328831d0a 31
ttodorov 12:d0978272a340 32 void HX8340S_LCD::Initialize( orientation_t orientation, colordepth_t colors )
ttodorov 4:3ac4239f6c9c 33 {
ttodorov 4:3ac4239f6c9c 34 _orientation = orientation;
ttodorov 12:d0978272a340 35 _colorDepth = colors;
ttodorov 4:3ac4239f6c9c 36
ttodorov 4:3ac4239f6c9c 37 wait_ms( 100 );
ttodorov 4:3ac4239f6c9c 38 _lcd_pin_reset = HIGH;
ttodorov 4:3ac4239f6c9c 39 wait_ms( 5 );
ttodorov 4:3ac4239f6c9c 40 _lcd_pin_reset = LOW;
ttodorov 4:3ac4239f6c9c 41 wait_ms( 15 );
ttodorov 4:3ac4239f6c9c 42 _lcd_pin_reset = HIGH;
ttodorov 4:3ac4239f6c9c 43 _lcd_pin_cs = HIGH;
ttodorov 4:3ac4239f6c9c 44 _lcd_pin_scl = HIGH;
ttodorov 4:3ac4239f6c9c 45 _lcd_pin_sdi = HIGH;
ttodorov 4:3ac4239f6c9c 46 if ( _lcd_pin_bl != 0 )
ttodorov 4:3ac4239f6c9c 47 *_lcd_pin_bl = HIGH;
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 4:3ac4239f6c9c 139 if ( _lcd_pin_bl != 0 )
ttodorov 4:3ac4239f6c9c 140 *_lcd_pin_bl = LOW;
ttodorov 4:3ac4239f6c9c 141 Deactivate();
ttodorov 4:3ac4239f6c9c 142 }
ttodorov 4:3ac4239f6c9c 143
ttodorov 4:3ac4239f6c9c 144 void HX8340S_LCD::WakeUp( void )
ttodorov 4:3ac4239f6c9c 145 {
ttodorov 4:3ac4239f6c9c 146 Activate();
ttodorov 4:3ac4239f6c9c 147 WriteCmd( 0x29 );
ttodorov 4:3ac4239f6c9c 148 wait_ms( 10 );
ttodorov 4:3ac4239f6c9c 149 WriteCmd( 0x11 );
ttodorov 4:3ac4239f6c9c 150 wait_ms( 125 );
ttodorov 4:3ac4239f6c9c 151 if ( _lcd_pin_bl != 0 )
ttodorov 4:3ac4239f6c9c 152 *_lcd_pin_bl = HIGH;
ttodorov 4:3ac4239f6c9c 153 Deactivate();
ttodorov 4:3ac4239f6c9c 154 }
ttodorov 4:3ac4239f6c9c 155
ttodorov 4:3ac4239f6c9c 156 void HX8340S_LCD::WriteCmd( unsigned short cmd )
ttodorov 4:3ac4239f6c9c 157 {
ttodorov 4:3ac4239f6c9c 158 _lcd_pin_sdi = LOW;
ttodorov 4:3ac4239f6c9c 159 pulseLow( _lcd_pin_scl );
ttodorov 4:3ac4239f6c9c 160 serializeByte( cmd & 0xFF );
ttodorov 4:3ac4239f6c9c 161 }
ttodorov 4:3ac4239f6c9c 162
ttodorov 4:3ac4239f6c9c 163 void HX8340S_LCD::WriteData( unsigned short data )
ttodorov 4:3ac4239f6c9c 164 {
ttodorov 4:3ac4239f6c9c 165 _lcd_pin_sdi = HIGH;
ttodorov 4:3ac4239f6c9c 166 pulseLow( _lcd_pin_scl );
ttodorov 4:3ac4239f6c9c 167 serializeByte( ( data >> 8 ) & 0xFF );
ttodorov 4:3ac4239f6c9c 168 _lcd_pin_sdi = HIGH;
ttodorov 4:3ac4239f6c9c 169 pulseLow( _lcd_pin_scl );
ttodorov 4:3ac4239f6c9c 170 serializeByte( data & 0xFF );
ttodorov 4:3ac4239f6c9c 171 }
ttodorov 4:3ac4239f6c9c 172
ttodorov 4:3ac4239f6c9c 173 void HX8340S_LCD::WriteByteData( unsigned char data )
ttodorov 4:3ac4239f6c9c 174 {
ttodorov 4:3ac4239f6c9c 175 _lcd_pin_sdi = HIGH;
ttodorov 4:3ac4239f6c9c 176 pulseLow( _lcd_pin_scl );
ttodorov 4:3ac4239f6c9c 177 serializeByte( data );
ttodorov 4:3ac4239f6c9c 178 }
ttodorov 4:3ac4239f6c9c 179
ttodorov 4:3ac4239f6c9c 180 void HX8340S_LCD::SetXY( uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2 )
ttodorov 4:3ac4239f6c9c 181 {
ttodorov 12:d0978272a340 182 WriteCmdData( 0x2A, x1 ); // CASET
ttodorov 4:3ac4239f6c9c 183 WriteData( x2 );
ttodorov 12:d0978272a340 184 WriteCmdData( 0x2B, y1 ); // PASET
ttodorov 4:3ac4239f6c9c 185 WriteData( y2 );
ttodorov 12:d0978272a340 186 WriteCmd( 0x2C ); // RAMWR
ttodorov 4:3ac4239f6c9c 187 }
ttodorov 4:3ac4239f6c9c 188
ttodorov 12:d0978272a340 189 void HX8340S_LCD::SetPixelColor( unsigned int color )
ttodorov 10:69571adcfad5 190 {
ttodorov 12:d0978272a340 191 unsigned char r, g, b;
ttodorov 12:d0978272a340 192 r = ( color >> 16 ) & 0xFF;
ttodorov 12:d0978272a340 193 g = ( color >> 8 ) & 0xFF;
ttodorov 12:d0978272a340 194 b = color & 0xFF;
ttodorov 12:d0978272a340 195 if ( _colorDepth == RGB16 )
ttodorov 12:d0978272a340 196 {
ttodorov 12:d0978272a340 197 unsigned short clr = ( ( ( ( r ) & 0xF8 ) | ( ( g ) >> 5 ) ) << 8 ) | ( ( ( ( g ) & 0x1C ) << 3 ) | ( ( b ) >> 3 ) );
ttodorov 12:d0978272a340 198 WriteData( clr );
ttodorov 12:d0978272a340 199 }
ttodorov 12:d0978272a340 200 else
ttodorov 12:d0978272a340 201 {
ttodorov 12:d0978272a340 202 WriteByteData( r & 0xFC );
ttodorov 12:d0978272a340 203 WriteByteData( g & 0xFC );
ttodorov 12:d0978272a340 204 WriteByteData( b & 0xFC );
ttodorov 12:d0978272a340 205 }
ttodorov 10:69571adcfad5 206 }
ttodorov 10:69571adcfad5 207
ttodorov 4:3ac4239f6c9c 208 void HX8340S_LCD::serializeByte( unsigned char data )
ttodorov 4:3ac4239f6c9c 209 {
ttodorov 4:3ac4239f6c9c 210 for ( int i = 0; i < 8; i++ )
ttodorov 4:3ac4239f6c9c 211 {
ttodorov 4:3ac4239f6c9c 212 if ( data & 0x80 ) _lcd_pin_sdi = HIGH;
ttodorov 4:3ac4239f6c9c 213 else _lcd_pin_sdi = LOW;
ttodorov 4:3ac4239f6c9c 214 pulseLow( _lcd_pin_scl );
ttodorov 4:3ac4239f6c9c 215 data = data << 1;
ttodorov 4:3ac4239f6c9c 216 }
ttodorov 4:3ac4239f6c9c 217 }