LCDPanel implementation for ITDB02-2.2SP LCD module using HX8340B controller
#include "mbed.h" DigitalOut myled(LED1); SPI spi(p5,NC,p7); DigitalOut cs(p8); DigitalOut rst(p9); void command(unsigned int i) { spi.write(i&0xff); } // clear 9th bit for command void data(unsigned int i) { spi.write(i|0x100); } // set 9th bit for data void lcd_window(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2) { command(0x2A); // column data(0x00); data(x1); data(0x00); data(x2); command(0x2B); // row data(0x00); data(y1); data(0x00); data(y2); command(0x2C); // start write to ram } void lcd_pixel(unsigned int c) { data(c>>8); data(c); } void lcd_fill(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2, unsigned int color) { cs=0; lcd_window(x1,y1,x2,y2); unsigned int total=(x2-x1+1)*(y2-y1+1); for (unsigned int i=0;i<total;i++) { lcd_pixel(color); } cs=1; } void lcd_clear() { lcd_fill(0,0,176,220,0); } void lcd_init() { cs = 1; rst = 0; spi.format(9); spi.frequency(5000000); wait_ms(1); rst = 1; wait_ms(1); cs = 0; command(0xC1); data(0xff); data(0x83); data(0x40); command(0x11); wait_ms(150); command(0xca); data(0x70); data(0x00); data(0xD9); command(0xb0); data(0x01); data(0x11); command(0xc9); data(0x90); data(0x49); data(0x10); data(0x28); data(0x28); data(0x10); data(0x00); data(0x06); wait_ms(20); command(0xc2); data(0x60); data(0x71); data(0x01); data(0x0e); data(0x05); data(0x02); data(0x09); data(0x31); data(0x0A); command(0xc3); data(0x67); data(0x30); data(0x61); data(0x17); data(0x48); data(0x07); data(0x05); data(0x33); wait_ms(10); command(0xb5); data(0x35); data(0x20); data(0x45); command(0xb4); data(0x33); data(0x25); data(0x4c); wait_ms(10); command(0x3a); data(0x05); command(0x29); wait_ms(10); cs=1; lcd_clear(); } int main() { lcd_init(); lcd_fill(9,9,166,210,0xff); lcd_fill(19,19,156,200,0x0ff00); while(1) { myled = 1; wait(0.2); myled = 0; wait(0.2); } }
Diff: LCDPanel_HX8340B.h
- Revision:
- 1:5dbe0bb6f7e4
- Parent:
- 0:6339553f69a4
--- a/LCDPanel_HX8340B.h Fri Mar 09 01:50:15 2012 +0000 +++ b/LCDPanel_HX8340B.h Sun Mar 11 01:32:19 2012 +0000 @@ -1,41 +1,50 @@ -/* -Placeholder for Copyright notice, etc - -Author: silviogissi +/* LCDPanel base library for LCD/TFT Panels + * Copyright (c) 2012, Silvio Gissi + * + * License: + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + * Author: Silvio Gissi + * Version: 0.1 Alfa + * References: + * Based on demo code from iTeadStudio (www.iteadstudio.com) for + * ITDB02-2.2SP. License unknown. + * + * Known modules: + * ITDB02-2.2SP (www.iteadstudio.com) */ #ifndef LCDPANEL_HX8340B_H #define LCDPANEL_HX8340B_H -/* -Options -#define LCDPANEL_HX8340B_LANDSCAPE - Use screen in landscape orientation -#define LCDPANEL_HX8340B_BITBANG - Bitbang SPI clock and data via DigitalOut instead of hardware SSP -*/ +#include "LCDPanel_SPI.h" -#ifdef LCDPANEL_HX8340B_LANDSCAPE -#define LCDPANEL_HX8340B_HEIGHT 176 -#define LCDPANEL_HX8340B_WIDTH 220 -#else #define LCDPANEL_HX8340B_HEIGHT 220 #define LCDPANEL_HX8340B_WIDTH 176 -#endif -#include "LCDPanel.h" - -class LCDPanel_HX8340B : public LCDPanel { +class LCDPanel_HX8340B : public LCDPanel_SPI { public: LCDPanel_HX8340B(PinName spi_data, PinName spi_clock, PinName cs, PinName rst); protected: - DigitalOut _rst; -#ifdef LCDPANEL_HX8340B_BITBANG - DigitalOut _scl,_sda; -#else - SPI _spi; -#endif - void init(); - virtual void pixel(unsigned int color) {} - virtual void window(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2) {} + virtual void window(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2); + }; #endif // LCDPANEL_HX8340B_H \ No newline at end of file