LPC1788的LCD接口驱动真彩屏

#ifndef __LCD_H_

#define __LCD_H_

#include "common.h"

#include "debugserial.h"

#include "delay.h"

#include "sdram.h"

#define White 0xFFFFFF

#define Black 0x000000

#define Blue 0xFF0000

#define Red 0x0000FF

#define Green 0x00FF00

#define Yellow 0x00FFFF

#define purple 0xff00ff

#define pixel_clock 9000000 //像素时钟设置为9M

#define lcd_h_size 480 //根据数据手册典型值设置

#define lcd_h_pulse 2

#define lcd_h_back_proch 43

#define lcd_h_front_porch 8

#define lcd_v_size 272

#define lcd_v_pulse 10

#define lcd_v_back_proch 12

#define lcd_v_front_porch 4

#define lcd_show_delay 10000

#define LCD_VRAM_BASE_ADDR ((unsigned long)SDRAM_BASE_ADDR + 0x00010000)//显示基地址

#define LCD_CURSOR_BASE_ADDR ((unsigned long)0x20088800)

void lcd_init(u32 defaultColor);

void lcd_clear(u32 color);

void lcd_set_backlight(u8 enable);

void lcd_draw_point(u32 x,u32 y,u32 color);

u32 lcd_read_point(u32 x,u32 y);

void lcd_draw_line(u16 x1,u16 y1,u16 x2,u16 y2,u32 color);

void lcd_draw_rect(u16 x1,u16 y1,u16 x2,u16 y2,u32 color);

void lcd_draw_cicle(u16 x0,u16 y0,u8 r,u32 color);

void lcd_test(u32 color);

#endif

#include "lcd.h"

//lcd io初始化

static void lcd_in_init(void)

{

LPC_SC->PCONP|=(1<<15);//打开时钟

/* R */

LPC_IOCON->P0_4=0x27; // LCD_VD_0

LPC_IOCON->P0_5=0x27; // LCD_VD_1

LPC_IOCON->P4_28=0x27; // LCD_VD_2

LPC_IOCON->P4_29=0x27; // LCD_VD_3

LPC_IOCON->P2_6=0x27; // LCD_VD_4

LPC_IOCON->P2_7=0x27; // LCD_VD_5

LPC_IOCON->P2_8=0x27; // LCD_VD_6

LPC_IOCON->P2_9=0x27; // LCD_VD_7

/* G */

LPC_IOCON->P0_6=0x27; // LCD_VD_8

LPC_IOCON->P0_7=0x27; // LCD_VD_9

LPC_IOCON->P1_20=0x27; // LCD_VD_10

LPC_IOCON->P1_21=0x27; // LCD_VD_11

LPC_IOCON->P1_22=0x27; // LCD_VD_12

LPC_IOCON->P1_23=0x27; // LCD_VD_13

LPC_IOCON->P1_24=0x27; // LCD_VD_14

LPC_IOCON->P1_25=0x27; // LCD_VD_15

/* B */

LPC_IOCON->P0_8=0x27; // LCD_VD_16

LPC_IOCON->P0_9=0x27; // LCD_VD_17

LPC_IOCON->P2_12=0x27; // LCD_VD_18

LPC_IOCON->P2_13=0x27; // LCD_VD_19

LPC_IOCON->P1_26=0x27; // LCD_VD_20

LPC_IOCON->P1_27=0x27; // LCD_VD_21

LPC_IOCON->P1_28=0x27; // LCD_VD_22

LPC_IOCON->P1_29=0x27; // LCD_VD_23

LPC_IOCON->P2_2=0x27; // LCD_DCLK

LPC_IOCON->P2_5=0x27; // LCD_LP -- HSYNC

LPC_IOCON->P2_3=0x27; // LCD_FP -- VSYNC

LPC_IOCON->P2_4=0x27; // LCD_ENAB_M -- LCDDEN

LPC_IOCON->P2_0=0x27; // LCD_PWR

}

void lcd_init(u32 defaultColor)

{

u32*pDst=(u32*)LCD_VRAM_BASE_ADDR;//显示数据基地址

u32 i=0;

//打开LCD时钟

LPC_SC->PCONP|=1<<0;

lcd_in_init();//初始化IO

//初始化背光引脚

LPC_IOCON->P2_1=0x00;

LPC_IOCON->P2_1|=(2<<3);//控制背光

P2dir(1)=1;

P2high(1)=1;

LPC_LCD->CRSR_CTRL&=~(1<<0);//禁止光标

LPC_LCD->CTRL=0;//禁止并清零LCD

LPC_LCD->CTRL&=~(7<<1);//清零面板设置

LPC_LCD->CTRL|=(5<<1);//设置面板tft 24bpp

LPC_LCD->CTRL|=(1<<5);//tft模式

LPC_LCD->CTRL&=~(1<<7);//单面板

LPC_LCD->CTRL&=~(1<<8);//RGB颜色

LPC_LCD->CTRL&=~(1<<9);//小端数据存储

LPC_LCD->CTRL&=~(1<<10);//像素排序小端

LPC_LCD->CTRL&=~(1<<11);//信号先维持低电平

LPC_SC->LCD_CFG=ApbClock/pixel_clock;//设置像素时钟 根据数据手册来

LPC_LCD->POL|=(1<<26);//像素时钟分频旁路

LPC_LCD->POL&=~(1<<5);//模块选择cclk时钟

LPC_LCD->POL|=(1<<11);//FB管脚低电平有效

LPC_LCD->POL|=(1<<12);//LP管脚低电平有效

LPC_LCD->POL&=~(1<<13);//像素信号于时钟上升沿驱动

LPC_LCD->POL&=~(1<<14);//高电平输出使能

LPC_LCD->POL&=~(0x3FF<<16);//清除h_szie

LPC_LCD->POL|=(lcd_h_size-1)<<16;//设置h_size

//设置水平时序控制

LPC_LCD->TIMH=0;

LPC_LCD->TIMH|=(lcd_h_back_proch-1)<<24;//水平后延

LPC_LCD->TIMH|=(lcd_h_front_porch-1)<<16;//水平前沿

LPC_LCD->TIMH|=(lcd_h_pulse-1)<<8; //水平同步脉冲宽度

LPC_LCD->TIMH|=((lcd_h_size/16)-1)<<2;//每一行的像素点

//设置竖直时序控制

LPC_LCD->TIMV=0;

LPC_LCD->TIMV|=(lcd_v_back_proch)<<24;//竖直后延

LPC_LCD->TIMV|=(lcd_v_front_porch)<<16;//竖直前沿

LPC_LCD->TIMV|=(lcd_v_pulse-1)<<10;//竖直脉冲宽度

LPC_LCD->TIMV|=lcd_v_size-1; //像素

// 设置显示缓冲区地址

LPC_LCD->UPBASE=LCD_VRAM_BASE_ADDR&(~(7<<0));

LPC_LCD->LPBASE=LCD_VRAM_BASE_ADDR&(~(7<<0));

for(i=0;(lcd_h_size*lcd_v_size)>i;i++)

{

*pDst++=defaultColor;//初始化颜色

}

i=lcd_show_delay;

while(i--);

LPC_LCD->CTRL|=(1<<0);//使能lcd

LPC_LCD->CTRL|=(1<<11);//使能lcd功率

}

void lcd_clear(u32 color)

{

u32*pDst=(u32*)LCD_VRAM_BASE_ADDR;//显示数据基地址

u32 i=0;

for(i=0;(lcd_h_size*lcd_v_size)>i;i++)

{

*pDst++=color;//初始化颜色

}

}

void lcd_set_backlight(u8 enable)

{

if(enable)P2high(1)=1;

elseP2low(1)=1;

}

void lcd_draw_point(u32 x,u32 y,u32 color)

{

u32*pDst=(u32*)LCD_VRAM_BASE_ADDR;//显示数据基地址

if(x

{

pDst=pDst+x+(y*lcd_h_size);