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. This fork is for 8 bit interface. I will add proper switch in later commit
Fork of TFTLCD by
ssd1289.cpp
- Committer:
- ttodorov
- Date:
- 2012-12-12
- Revision:
- 16:4ccc2fa2cfec
- Parent:
- 15:af3cd35886fb
- Child:
- 17:866f2a851dd7
File content as of revision 16:4ccc2fa2cfec:
/* * Copyright (C)2010-2012 Henning Karlsen. All right reserved. * Copyright (C)2012 Todor Todorov. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to: * * Free Software Foundation, Inc. * 51 Franklin St, 5th Floor, Boston, MA 02110-1301, USA * *********************************************************************/ #include "ssd1289.h" #include "helpers.h" SSD1289_LCD::SSD1289_LCD( PinName CS, PinName RESET, PinName RS, PinName WR, BusOut* DATA_PORT, PinName BL, PinName RD ) : LCD( 240, 320, CS, RS, RESET ), _lcd_pin_wr( WR ) { _lcd_port = DATA_PORT; if ( BL != NC ) _lcd_pin_bl = new DigitalOut( BL ); else _lcd_pin_bl = 0; if ( RD != NC ) _lcd_pin_rd = new DigitalOut( RD ); else _lcd_pin_rd = 0; } void SSD1289_LCD::Initialize( orientation_t orientation, colordepth_t colors ) { _orientation = orientation; _colorDepth = colors; _lcd_pin_reset = HIGH; wait_ms( 5 ); _lcd_pin_reset = LOW; wait_ms( 15 ); _lcd_pin_reset = HIGH; _lcd_pin_cs = HIGH; if ( _lcd_pin_bl != 0 ) *_lcd_pin_bl = HIGH; if ( _lcd_pin_rd != 0 ) *_lcd_pin_rd = HIGH; _lcd_pin_wr = HIGH; wait_ms( 15 ); Activate(); WriteCmdData( 0x00, 0x0001 ); // oscillator: 1 = on, 0 = off wait_ms( 1 ); WriteCmdData( 0x03, 0xA8A4 ); // power control wait_ms( 1 ); WriteCmdData( 0x0C, 0x0000 ); // power control 2 wait_ms( 1 ); WriteCmdData( 0x0D, 0x080C ); // power control 3 wait_ms( 1 ); WriteCmdData( 0x0E, 0x2B00 ); // power control 4 wait_ms( 1 ); WriteCmdData( 0x1E, 0x00B7 ); // power control 5 wait_ms( 1 ); WriteCmdData( 0x02, 0x0600 ); // driving waveform control wait_ms( 1 ); WriteCmdData( 0x10, 0x0000 ); // sleep mode: 0 = exit, 1 = enter wait_ms( 1 ); if ( _colorDepth == RGB16 ) { switch ( _orientation ) { case LANDSCAPE: WriteCmdData( 0x01, 0x2B3F ); // driver output control // 0x293F 0x2B3F 0x2D3F 0x2F3F 0x693F 0x6B3F 0x6D3F 0x6F3F wait_ms( 1 ); WriteCmdData( 0x11, 0x6030 ); // entry mode // 0x6040 0x6048 0x6050 0x6058 0x6060 0x6068 break; case PORTRAIT_REV: WriteCmdData( 0x01, 0x693F ); // driver output control wait_ms( 1 ); WriteCmdData( 0x11, 0x6070 ); // entry mode break; case LANDSCAPE_REV: WriteCmdData( 0x11, 0x60A8 ); // entry mode break; case PORTRAIT: default: WriteCmdData( 0x01, 0x2B3F ); // driver output control wait_ms( 1 ); WriteCmdData( 0x11, 0x6070 ); // entry mode break; } } else if ( _colorDepth == RGB18 ) { switch ( _orientation ) { case LANDSCAPE: WriteCmdData( 0x01, 0x293F ); // driver output control // 0x293F 0x2B3F 0x2D3F 0x2F3F 0x693F 0x6B3F 0x6D3F 0x6F3F wait_ms( 1 ); WriteCmdData( 0x11, 0x4048 ); // entry mode // 0x4040 0x4048 0x4050 0x4058 0x4060 0x4068 break; case PORTRAIT_REV: WriteCmdData( 0x01, 0x693F ); // driver output control wait_ms( 1 ); WriteCmdData( 0x11, 0x4070 ); // entry mode break; case LANDSCAPE_REV: WriteCmdData( 0x11, 0x4068 ); // entry mode break; case PORTRAIT: default: WriteCmdData( 0x01, 0x2B3F ); // driver output control wait_ms( 1 ); WriteCmdData( 0x11, 0x4070 ); // entry mode break; } } wait_ms( 1 ); WriteCmdData( 0x05, 0x0000 ); // compare register wait_ms( 1 ); WriteCmdData( 0x06, 0x0000 ); // compare register wait_ms( 1 ); WriteCmdData( 0x16, 0xEF1C ); // horizontal porch wait_ms( 1 ); WriteCmdData( 0x17, 0x0003 ); // vertical porch wait_ms( 1 ); WriteCmdData( 0x07, 0x0233 ); // display control wait_ms( 1 ); WriteCmdData( 0x0B, 0x0000 ); // frame cycle control wait_ms( 1 ); WriteCmdData( 0x0F, 0x0000 ); // gate scan position wait_ms( 1 ); WriteCmdData( 0x41, 0x0000 ); // vertical scroll control wait_ms( 1 ); WriteCmdData( 0x42, 0x0000 ); // vertical scroll control wait_ms( 1 ); WriteCmdData( 0x48, 0x0000 ); // 1st screen driving position wait_ms( 1 ); WriteCmdData( 0x49, 0x013F ); // 1st screen driving position wait_ms( 1 ); WriteCmdData( 0x4A, 0x0000 ); // 2nd screen driving position wait_ms( 1 ); WriteCmdData( 0x4B, 0x0000 ); // 2nd screen driving position wait_ms( 1 ); WriteCmdData( 0x44, 0xEF00 ); // horizontal ram address position wait_ms( 1 ); WriteCmdData( 0x45, 0x0000 ); // vertical ram address position wait_ms( 1 ); WriteCmdData( 0x46, 0x013F ); // vertical ram address position wait_ms( 1 ); WriteCmdData( 0x30, 0x0707 ); // gamma control wait_ms( 1 ); WriteCmdData( 0x31, 0x0204 ); // gamma control wait_ms( 1 ); WriteCmdData( 0x32, 0x0204 ); // gamma control wait_ms( 1 ); WriteCmdData( 0x33, 0x0502 ); // gamma control wait_ms( 1 ); WriteCmdData( 0x34, 0x0507 ); // gamma control wait_ms( 1 ); WriteCmdData( 0x35, 0x0204 ); // gamma control wait_ms( 1 ); WriteCmdData( 0x36, 0x0204 ); // gamma control wait_ms( 1 ); WriteCmdData( 0x37, 0x0502 ); // gamma control wait_ms( 1 ); WriteCmdData( 0x3A, 0x0302 ); // gamma control wait_ms( 1 ); WriteCmdData( 0x3B, 0x0302 ); // gamma control wait_ms( 1 ); WriteCmdData( 0x23, 0x0000 ); // GRAM write mask for red and green pins wait_ms( 1 ); WriteCmdData( 0x24, 0x0000 ); // GRAM write mask for blue pins wait_ms( 1 ); WriteCmdData( 0x25, 0x8000 ); // frame frequency control wait_ms( 1 ); WriteCmdData( 0x4e, 0x0000 ); // ram address set wait_ms( 1 ); WriteCmdData( 0x4f, 0x0000 ); // ram address set wait_ms( 1 ); WriteCmd( 0x22 ); // write GRAM Deactivate(); } void SSD1289_LCD::Sleep( void ) { // TODO: figure out if the SSD1289 controller has sleep and wakeup commands if ( _lcd_pin_bl != 0 ) *_lcd_pin_bl = LOW; } void SSD1289_LCD::WakeUp( void ) { // TODO: figure out if the SSD1289 controller has sleep and wakeup commands if ( _lcd_pin_bl != 0 ) *_lcd_pin_bl = HIGH; } void SSD1289_LCD::WriteCmd( unsigned short cmd ) { _lcd_pin_rs = LOW; _lcd_port->write( cmd ); pulseLow( _lcd_pin_wr ); } void SSD1289_LCD::WriteData( unsigned short data ) { _lcd_pin_rs = HIGH; _lcd_port->write( data ); pulseLow( _lcd_pin_wr ); } void SSD1289_LCD::SetXY( uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2 ) { WriteCmdData( 0x44, ( x2 << 8 ) + x1 ); WriteCmdData( 0x45, y1 ); WriteCmdData( 0x46, y2 ); WriteCmdData( 0x4e, x1 ); WriteCmdData( 0x4f, y1 ); WriteCmd( 0x22 ); } void SSD1289_LCD::SetPixelColor( unsigned int color ) { unsigned char r, g, b; unsigned short clr; r = ( color >> 16 ) & 0xFF; g = ( color >> 8 ) & 0xFF; b = color & 0xFF; if ( _colorDepth == RGB16 ) { clr = ( ( ( ( r ) & 0xF8 ) | ( ( g ) >> 5 ) ) << 8 ) | ( ( ( ( g ) & 0x1C ) << 3 ) | ( ( b ) >> 3 ) ); WriteData( clr ); } else if ( _colorDepth == RGB18 ) { clr = ( ( r & 0xFC ) << 8 ) | ( g & 0xFC ); WriteData( clr ); WriteData( b & 0xFC ); } }