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); } }
LCDPanel_HX8340B.cpp@1:5dbe0bb6f7e4, 2012-03-11 (annotated)
- Committer:
- silviogissi
- Date:
- Sun Mar 11 01:32:19 2012 +0000
- Revision:
- 1:5dbe0bb6f7e4
- Parent:
- 0:6339553f69a4
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
silviogissi | 1:5dbe0bb6f7e4 | 1 | /* LCDPanel base library for LCD/TFT Panels |
silviogissi | 1:5dbe0bb6f7e4 | 2 | * Copyright (c) 2012, Silvio Gissi */ |
silviogissi | 1:5dbe0bb6f7e4 | 3 | |
silviogissi | 0:6339553f69a4 | 4 | #include "LCDPanel_HX8340B.h" |
silviogissi | 0:6339553f69a4 | 5 | |
silviogissi | 0:6339553f69a4 | 6 | LCDPanel_HX8340B::LCDPanel_HX8340B(PinName spi_data, PinName spi_clock, PinName cs, PinName rst) |
silviogissi | 1:5dbe0bb6f7e4 | 7 | : LCDPanel_SPI (LCDPANEL_HX8340B_WIDTH,LCDPANEL_HX8340B_HEIGHT,cs, |
silviogissi | 1:5dbe0bb6f7e4 | 8 | spi_data, spi_clock, rst, 9, 1000000 |
silviogissi | 1:5dbe0bb6f7e4 | 9 | ) |
silviogissi | 0:6339553f69a4 | 10 | { |
silviogissi | 1:5dbe0bb6f7e4 | 11 | // Reset |
silviogissi | 1:5dbe0bb6f7e4 | 12 | _rst = 0; |
silviogissi | 1:5dbe0bb6f7e4 | 13 | wait_ms(5); |
silviogissi | 1:5dbe0bb6f7e4 | 14 | _rst = 1; |
silviogissi | 1:5dbe0bb6f7e4 | 15 | wait_ms(5); |
silviogissi | 1:5dbe0bb6f7e4 | 16 | CsTransaction(this); |
silviogissi | 1:5dbe0bb6f7e4 | 17 | this->command(0xc1,3,0xff,0x83,0x40); |
silviogissi | 1:5dbe0bb6f7e4 | 18 | this->command(0x11); |
silviogissi | 1:5dbe0bb6f7e4 | 19 | wait_ms(10); |
silviogissi | 1:5dbe0bb6f7e4 | 20 | this->command(0xca,5,0x70,0x00,0xD9,0x01,0x11); |
silviogissi | 1:5dbe0bb6f7e4 | 21 | this->command(0xc9,8,0x90,0x49,0x10,0x28,0x28,0x10,0x00,0x06); |
silviogissi | 1:5dbe0bb6f7e4 | 22 | wait_ms(20); |
silviogissi | 1:5dbe0bb6f7e4 | 23 | this->command(0xc2,9,0x60,0x71,0x01,0x0e,0x05,0x02,0x09,0x31,0x0A); |
silviogissi | 1:5dbe0bb6f7e4 | 24 | this->command(0xc3,8,0x67,0x30,0x61,0x17,0x48,0x07,0x05,0x33); |
silviogissi | 1:5dbe0bb6f7e4 | 25 | wait_ms(10); |
silviogissi | 1:5dbe0bb6f7e4 | 26 | this->command(0xb5,3,0x35,0x20,0x45); |
silviogissi | 1:5dbe0bb6f7e4 | 27 | this->command(0xb4,3,0x33,0x25,0x4c); |
silviogissi | 1:5dbe0bb6f7e4 | 28 | wait_ms(10); |
silviogissi | 1:5dbe0bb6f7e4 | 29 | this->command(0x3a,1,0x05); |
silviogissi | 1:5dbe0bb6f7e4 | 30 | this->command(0x29); |
silviogissi | 1:5dbe0bb6f7e4 | 31 | wait_ms(10); |
silviogissi | 1:5dbe0bb6f7e4 | 32 | clear(); |
silviogissi | 0:6339553f69a4 | 33 | } |
silviogissi | 0:6339553f69a4 | 34 | |
silviogissi | 1:5dbe0bb6f7e4 | 35 | void LCDPanel_HX8340B::window(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2) { |
silviogissi | 1:5dbe0bb6f7e4 | 36 | // Set X window, panel size is less than 255, high byte always 0x00 |
silviogissi | 1:5dbe0bb6f7e4 | 37 | this->command(0x2a,4,0x00,x1,0x00,x2); |
silviogissi | 1:5dbe0bb6f7e4 | 38 | this->command(0x2b,4,0x00,y1,0x00,y2); |
silviogissi | 1:5dbe0bb6f7e4 | 39 | this->command(0x2c); |
silviogissi | 1:5dbe0bb6f7e4 | 40 | } |
silviogissi | 1:5dbe0bb6f7e4 | 41 |