Thiha Electronics
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 
Todor Todorov
Diff: ili9328.cpp
- Revision:
- 32:155abe4126e3
diff -r 9ca104de2f74 -r 155abe4126e3 ili9328.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ili9328.cpp Wed Dec 03 16:35:25 2014 +0000
@@ -0,0 +1,311 @@
+/*
+ * 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 )
+{
+ Activate();
+ WriteCmdData( 0x10, 0x1692 ); // enter sleep mode
+ wait_ms( 200 );
+ LCD::Sleep();
+ Deactivate();
+}
+
+void ILI9328_LCD::WakeUp( void )
+{
+ Activate();
+ WriteCmdData( 0x10, 0x1690 ); // exit sleep mode
+ wait_ms( 200 );
+ LCD::WakeUp();
+ Deactivate();
+}
+
+void ILI9328_LCD::WriteCmd( unsigned short cmd )
+{
+
+ unsigned short u,l;
+ u = (cmd>>8) & 0xFF;
+ l = cmd & 0xFF;
+
+//New
+ _lcd_pin_cs = LOW;
+//
+ _lcd_pin_rs = LOW;
+
+//New
+ *_lcd_pin_rd = HIGH;
+ _lcd_pin_wr = HIGH;
+//
+ _lcd_port->write( u );
+ pulseLow( _lcd_pin_wr );
+
+ _lcd_port->write( l );
+ pulseLow( _lcd_pin_wr );
+
+//New
+ _lcd_pin_cs = HIGH;
+//
+}
+
+void ILI9328_LCD::WriteData( unsigned short data )
+{
+ unsigned short u,l;
+ u = (data>>8) & 0xFF;
+ l = data & 0xFF;
+
+//New
+ _lcd_pin_cs = LOW;
+//
+ _lcd_pin_rs = HIGH;
+//New
+ *_lcd_pin_rd = HIGH;
+ _lcd_pin_wr = HIGH;
+//
+ _lcd_port->write( u );
+ pulseLow( _lcd_pin_wr );
+
+ _lcd_port->write( l );
+ pulseLow( _lcd_pin_wr );
+
+//New
+ _lcd_pin_cs = HIGH;
+//
+}
+
+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 );
+ }
+}