TFT显现图片的驱动函数

以下是TFT的驱动函数用来显现图片，之前要将图片进行取模并保存在一下数组中：

const unsignedchar code Image_pic[7128] = { }；

然后只需修正程序中的赤色字体的文字！

必定记住：运用TFT显现图片只需修正红黑色字体的文字，知道如何用即可，没有太大的必要亲身去写驱动函数！！！除非你有满足的精力逐句去了解，这对你也有优点.

#include
#include

#include “LCD.h”

#defineNOP()_nop_()

#defineTYPE_LCD_DATA1
#defineTYPE_LCD_COMMAND0

char code reserve[3]_at_ 0x3b; //保存0x3b开端的3个字节

#defineDATAP0//界说数据输入端口并行

sbit LCD_RST= P2^7;
sbit LCD_RD= P3^2;
sbit LCD_WR= P3^3;
sbit LCD_RS= P2^5;
sbit LCD_CS= P2^6;

//以上赤色字体是必需要针对实际的TFT接口衔接状况进行修正的，此为使用的要害之处

uint colors[]=
{
0xf800,0x07e0,0x001f,0xffe0,0x0000,0x07ff,0xf81f,0xffff
};

void delay_ms(uint ms)
{
unsigned char k;

while (ms–)
{
for (k = 0; k < 228; k++)
;
}
}

void LCD_Write(uchar type, uint value)
{
LCD_CS = 0;
LCD_RS = type;// 0: command1: data

LCD_WR= 0;
DATA = (uchar)value;
LCD_WR = 1;
LCD_CS = 1;
}

void LCD_Write_Data8(uchar value)// color data
{
LCD_CS = 0;
LCD_RS = 1;
LCD_WR= 0;
DATA = value;
LCD_WR= 1;
LCD_CS = 1;
}

void LCD_Wirte_Data16(uint value)// color data
{
LCD_CS = 0;
LCD_RS = 1;
LCD_WR= 0;
DATA = (uchar)value;
LCD_WR= 1;
LCD_WR= 0;
DATA = (uchar)(value>>8);
LCD_WR = 1;
LCD_CS = 1;
}

void Reg_Write(uint reg,uint value)
{
LCD_Write(TYPE_LCD_COMMAND,reg);
LCD_Write(TYPE_LCD_DATA,value);
}

void LCD_SetRamAddr(uint xStart, uint xEnd, uint yStart, uint yEnd)
{
uint VerPos,HorPos,StartAddr;

HorPos= (uint)(xStart | (xEnd<<8));
VerPos= (uint)(yStart | (yEnd<<8));
StartAddr = (uint)(xStart | (yStart<<8));

Reg_Write(0x09, xStart);
Reg_Write(0x10,yStart);
Reg_Write(0x11,xEnd);
Reg_Write(0x12,yEnd);

Reg_Write(0x18, xStart);
Reg_Write(0x19, yStart);

LCD_Write(TYPE_LCD_COMMAND,0x22);// 0x22
}

void LCD_init(void)
{uint num;

Reg_Write(0x0001,0x0002); //MODE_SEL1
Reg_Write(0x0002,0x0012);//MODE_SEL2
Reg_Write(0x0003,0x0000);//MODE_SEL3
Reg_Write(0x0004,0x0010);//MODE_SEL3
LCD_SetRamAddr(0,127, 0,159);
for(num=20480;num>0;num–)
LCD_Wirte_Data16(0xffff);

Reg_Write(0x0005,0x0008);//VCO_MODE
Reg_Write(0x0007,0x007f);//VCOMHT_CTRL
Reg_Write(0x0008,0x0017);//VCOMLT_CTRL
Reg_Write(0x0009,0x0000);//write SRAM window start X point
Reg_Write(0x0010,0x0000);//write SRAM window start y point
Reg_Write(0x0011,0x0083);//write SRAM window end x point
Reg_Write(0x0012,0x009f);//write SRAM window end y point
Reg_Write(0x0017,0x0000);//SRAM contrl
Reg_Write(0x0018,0x0000);//SRAM x position
Reg_Write(0x0019,0x0000);//SRAM y position
Reg_Write(0x0006,0x00c5);//DAC_OP_CTRL2
delay_ms(10); //延时

}

voidpic_play(uint Start_X, uint End_X,uint Start_Y,uint End_Y)
{
uint num,m;
uint dx,dy;

dx = (End_X+1)-Start_X;//核算写入数据的总数
dy = (End_Y+1)-Start_Y;
num = dx*dy<<1;

LCD_CS = 0;
LCD_SetRamAddr(Start_X,End_X-1,Start_Y,End_Y-1) ;
LCD_RS = 1;

for(m=0; m<7128; m++)
{
LCD_Write_Data8(Image_pic[m]);

}
LCD_CS = 1;

}

voidLCD_clear(uchar n)
{
uint num;

LCD_SetRamAddr(0,127, 0,159);//清屏函数

for(num=20480;num>0;num–)//160*128=20480
{
LCD_Wirte_Data16(colors[n]);//其实质是对每一个点进行设置！
}
}

void main(void)
{
P2 = 0xff;
P0 = 0xff;//端口的初始化

LCD_init();//屏幕初始化
LCD_clear(6);//清屏

pic_play(7,61,8,74);
pic_play(68,122,8,74);
pic_play(7,61,82,148);
pic_play(68,122,82,148);

//设置显现图片的方位
while(1);
}