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.
Fork of TFTLCD by
ili9328.cpp
- Committer:
- ttodorov
- Date:
- 2013-06-16
- Revision:
- 26:28f64fbcf7df
- Parent:
- 25:6cffb758c075
- Child:
- 27:26491d710e72
File content as of revision 26:28f64fbcf7df:
/* * Copyright (C)2010-2012 Henning Karlsen. All right reserved. * Copyright (C)2012-2013 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 "ili9328.h" #include "helpers.h" ILI9328_LCD::ILI9328_LCD( PinName CS, PinName RESET, PinName RS, PinName WR, BusOut* DATA_PORT, PinName BL, PinName RD, backlight_t blType, float defaultBackLightLevel ) : LCD( 240, 320, CS, RS, RESET, BL, blType, defaultBackLightLevel ), _lcd_pin_wr( WR ) { _lcd_port = DATA_PORT; if ( RD != NC ) _lcd_pin_rd = new DigitalOut( RD ); else _lcd_pin_rd = 0; } void ILI9328_LCD::Initialize( orientation_t orientation, colordepth_t colors ) { _orientation = orientation; _colorDepth = colors; _lcd_pin_reset = HIGH; wait_ms( 50 ); _lcd_pin_reset = LOW; wait_ms( 100 ); _lcd_pin_reset = HIGH; wait_ms( 1000 ); _lcd_pin_cs = HIGH; if ( _lcd_pin_bl != 0 ) *_lcd_pin_bl = HIGH; else if ( _bl_pwm != 0 ) *_bl_pwm = _bl_pwm_default; if ( _lcd_pin_rd != 0 ) *_lcd_pin_rd = HIGH; _lcd_pin_wr = HIGH; wait_ms( 15 ); Activate(); short drivOut = 0; short entryMod = 0; short gateScan = 0x2700; switch ( _orientation ) { case LANDSCAPE: drivOut = 0x0100; entryMod |= 0x0038; gateScan |= 0x0000; break; case LANDSCAPE_REV: drivOut = 0x0000; entryMod |= 0x0038; gateScan |= 0x8000; break; case PORTRAIT_REV: drivOut = 0x0000; entryMod |= 0x0030; gateScan |= 0x0000; break; case PORTRAIT: default: drivOut = 0x0100; entryMod |= 0x0030; gateScan |= 0x8000; break; } switch ( _colorDepth ) { case RGB18: entryMod |= 0x9000; break; case RGB16: default: entryMod |= 0x1000; break; } WriteCmdData( 0xE5, 0x78F0 ); // set SRAM internal timing WriteCmdData( 0x01, drivOut ); // set Driver Output Control WriteCmdData( 0x02, 0x0200 ); // set 1 line inversion WriteCmdData( 0x03, entryMod ); // set GRAM write direction and BGR=1. WriteCmdData( 0x04, 0x0000 ); // Resize register WriteCmdData( 0x08, 0x0207 ); // set the back porch and front porch WriteCmdData( 0x09, 0x0000 ); // set non-display area refresh cycle ISC[3:0] WriteCmdData( 0x0A, 0x0000 ); // FMARK function WriteCmdData( 0x0C, 0x0000 ); // RGB interface setting WriteCmdData( 0x0D, 0x0000 ); // Frame marker Position WriteCmdData( 0x0F, 0x0000 ); // RGB interface polarity // ----------- Power On sequence ----------- // WriteCmdData( 0x10, 0x0000 ); // SAP, BT[3:0], AP, DSTB, SLP, STB WriteCmdData( 0x11, 0x0007 ); // DC1[2:0], DC0[2:0], VC[2:0] WriteCmdData( 0x12, 0x0000 ); // VREG1OUT voltage WriteCmdData( 0x13, 0x0000 ); // VDV[4:0] for VCOM amplitude WriteCmdData( 0x07, 0x0001 ); wait_ms( 200 ); // Dis-charge capacitor power voltage WriteCmdData( 0x10, 0x1690 ); // SAP, BT[3:0], AP, DSTB, SLP, STB WriteCmdData( 0x11, 0x0227 ); // Set DC1[2:0], DC0[2:0], VC[2:0] wait_ms( 50 ); // Delay 50ms WriteCmdData( 0x12, 0x000D ); // 0012 wait_ms( 50 ); // Delay 50ms WriteCmdData( 0x13, 0x1200 ); // VDV[4:0] for VCOM amplitude WriteCmdData( 0x29, 0x000A ); // 04 VCM[5:0] for VCOMH WriteCmdData( 0x2B, 0x000D ); // Set Frame Rate wait_ms( 50 ); // Delay 50ms WriteCmdData( 0x20, 0x0000 ); // GRAM horizontal Address WriteCmdData( 0x21, 0x0000 ); // GRAM Vertical Address // ----------- Adjust the Gamma Curve ----------// WriteCmdData( 0x30, 0x0000 ); WriteCmdData( 0x31, 0x0404 ); WriteCmdData( 0x32, 0x0003 ); WriteCmdData( 0x35, 0x0405 ); WriteCmdData( 0x36, 0x0808 ); WriteCmdData( 0x37, 0x0407 ); WriteCmdData( 0x38, 0x0303 ); WriteCmdData( 0x39, 0x0707 ); WriteCmdData( 0x3C, 0x0504 ); WriteCmdData( 0x3D, 0x0808 ); //------------------ Set GRAM area ---------------// WriteCmdData( 0x50, 0x0000 ); // Horizontal GRAM Start Address WriteCmdData( 0x51, 0x00EF ); // Horizontal GRAM End Address WriteCmdData( 0x52, 0x0000 ); // Vertical GRAM Start Address WriteCmdData( 0x53, 0x013F ); // Vertical GRAM Start Address WriteCmdData( 0x60, gateScan ); // Gate Scan Line (0xA700) WriteCmdData( 0x61, 0x0000 ); // NDL,VLE, REV WriteCmdData( 0x6A, 0x0000 ); // set scrolling line //-------------- Partial Display Control ---------// WriteCmdData( 0x80, 0x0000 ); WriteCmdData( 0x81, 0x0000 ); WriteCmdData( 0x82, 0x0000 ); WriteCmdData( 0x83, 0x0000 ); WriteCmdData( 0x84, 0x0000 ); WriteCmdData( 0x85, 0x0000 ); //-------------- Panel Control -------------------// WriteCmdData( 0x90, 0x0010 ); WriteCmdData( 0x92, 0x0000 ); WriteCmdData( 0x07, 0x0133 ); // 262K color and display ON Deactivate(); } void ILI9328_LCD::Sleep( void ) { WriteCmdData( 0x10, 0x0001 );//0x1692 ); // enter sleep mode LCD::Sleep(); } void ILI9328_LCD::WakeUp( void ) { WriteCmdData( 0x10, 0x0000 );//0x1690 ); // exit sleep mode LCD::WakeUp(); } void ILI9328_LCD::WriteCmd( unsigned short cmd ) { _lcd_pin_rs = LOW; _lcd_port->write( cmd ); pulseLow( _lcd_pin_wr ); } void ILI9328_LCD::WriteData( unsigned short data ) { _lcd_pin_rs = HIGH; _lcd_port->write( data ); pulseLow( _lcd_pin_wr ); } void ILI9328_LCD::SetXY( unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2 ) { switch ( _orientation ) { case LANDSCAPE: case LANDSCAPE_REV: WriteCmdData( 0x20, y1 ); WriteCmdData( 0x21, x1 ); WriteCmdData( 0x50, y1 ); WriteCmdData( 0x52, x1 ); WriteCmdData( 0x51, y2 ); WriteCmdData( 0x53, x2 ); break; case PORTRAIT_REV: case PORTRAIT: default: WriteCmdData( 0x20, x1 ); WriteCmdData( 0x21, y1 ); WriteCmdData( 0x50, x1 ); WriteCmdData( 0x52, y1 ); WriteCmdData( 0x51, x2 ); WriteCmdData( 0x53, y2 ); break; } WriteCmd( 0x22 ); } void ILI9328_LCD::SetPixelColor( unsigned int color, colordepth_t mode ) { unsigned char r, g, b; unsigned short clr; r = g = b = 0; if ( _colorDepth == RGB16 ) { switch ( mode ) { case RGB16: WriteData( color & 0xFFFF ); break; case RGB18: r = ( color >> 10 ) & 0xF8; g = ( color >> 4 ) & 0xFC; b = ( color >> 1 ) & 0x1F; clr = ( ( r | ( g >> 5 ) ) << 8 ) | ( ( g << 3 ) | b ); WriteData( clr ); break; case RGB24: r = ( color >> 16 ) & 0xF8; g = ( color >> 8 ) & 0xFC; b = color & 0xF8; clr = ( ( r | ( g >> 5 ) ) << 8 ) | ( ( g << 3 ) | ( b >> 3 ) ); WriteData( clr ); break; } } else if ( _colorDepth == RGB18 ) { switch ( mode ) { case RGB16: r = ( ( color >> 8 ) & 0xF8 ) | ( ( color & 0x8000 ) >> 13 ); g = ( color >> 3 ) & 0xFC; b = ( ( color << 3 ) & 0xFC ) | ( ( color >> 3 ) & 0x01 ); break; case RGB18: b = ( color << 2 ) & 0xFC; g = ( color >> 4 ) & 0xFC; r = ( color >> 10 ) & 0xFC; break; case RGB24: r = ( color >> 16 ) & 0xFC; g = ( color >> 8 ) & 0xFC; b = color & 0xFC; break; } clr = ( r << 8 ) | ( g << 2 ) | ( b >> 4 ); WriteData( clr ); WriteData( b << 4 ); } }