TFT画线程序

在刚刚接触到TFT选视屏时，的确对他产生过恐惧感，可是韩式坚持学习下去；在最终用它打出点时一切问题都方便的解决！！由于会打点了，也就会划线了，会划线了也就会画出自己的坐标系了！！仍是之前的那句话，越是高档的外围设备，它在出厂时都会有自己的一套驱动程序！只需把握了就可以对他进行操作了，而不需要你去写程序！！

所以从必定意义上来讲，玩转TFT的难度要比你玩转四位数码管的难度小！！的确如此！其间的趣味只要自己去做才干领会！

#include
#defineuint unsigned int
#define uchar unsigned char
#defineTYPE_LCD_DATA1
#defineTYPE_LCD_COMMAND0
#defineLCD_SIZE_X128
#defineLCD_SIZE_Y160
#defineDATAP0

sbit LCD_RST= P2^7;//RST 引脚界说
sbit LCD_RD= P3^2;//RD引脚界说
sbit LCD_WR= P3^3;//WR引脚界说
sbit LCD_RS= P2^5;//RS引脚界说
sbit LCD_CS= P2^6;//CS引脚界说

//想玩转任何一种外围设备都必须首要了解他的引脚的效果，才干为所欲为的移植代码，按自己的要求去操作！！

//以下函数大多部分都是TFT的驱动函数，都有自己的功用注解，了解功用后就可运用！！
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_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)
{
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

}

voidLCD_clear(uchar n)
{
uint num;

LCD_SetRamAddr(0,127, 0,159);

for(num=20480;num>0;num–)//160*128=20480
{
LCD_Wirte_Data16(colors[n]);
}
}
//===============================================================
//设定当时显现坐标
//进口参数: x,y为当时显现坐标。
//出口参数: 无
//阐明：本函数实际上是LCD_setwindow函数的一个特例，显现窗口为最小，仅是一个像素点。
void LCD_setxy(unsigned char x,unsigned int y)
{
LCD_SetRamAddr(x,y,x,y);
}

void GUI_Point(uchar x, uint y, uint n)
{
LCD_setxy(x,y);
LCD_Wirte_Data16(colors[n]);
}
void main()
{
uint num;
P2 = 0xff;
P0 = 0xff;
LCD_init();
while(1)
{
LCD_SetRamAddr(50,100, 50,50);
for(num=2500;num>0;num–)//160*128=20480
{
LCD_Wirte_Data16(colors[2]);//比如此函数只需知道是用来设置点的色彩即可，以及其参数是colors[]
}
}
}