12864液晶屏(带字库)51单片机3线串口驱动程序

#include

typedef unsigned char uint8; typedef unsigned int uint16; typedef unsigned long uitn32;

sbit CS = P1^0;//片选信号引脚sbit SDA = P1^1;//数据线

sbit SCK = P1^2;//串行时钟线

//sbit RST = P1^3;//复位引脚

//sbit PSB = P1^4;//串并控制引脚

code uint8 strint1[] = "I Love You !";

/*void delay5ms(void) //误差0us {

unsigned char a,b;

for(b=185;b>0;b--)

for(a=12;a>0;a--);

}*/

//发送一个字节

voidSend_Byte(uint8 dat)

{

uint8 i;

SCK = 0;

for(i=0;i<8;i++)

{

SDA = dat&0x80;

SCK = 1;

dat<<= 1;

SCK = 0;

}

}

//读取一个字节数据

uint8 Read_Byte(void)

{

uint8 i;

uint16 byte = 0;

SCK = 0;

for(i=0;i<16;i++)

{

byte<<= 1;

SCK = 1;

if(SDA)

byte |= 0x0001;

SCK = 0;

}

byte = ((byte>>4)|(byte>>8))&0x00ff;

return ((uint8)(byte));

}

//读忙标志

voidRead_Busy(void)

{

uint8 temp;

CS = 1;

do

{

Send_Byte(0xfc);//发送读命令

temp = Read_Byte();//读取数据}

while(temp&0x80);

CS = 0;

}

//发送命令

voidWrite_Cmd(uint8 cmd)

{

uint8temph = 0;

uint8templ = 0;

//制作发送命令格式

temph = cmd& 0xf0;

templ = (cmd& 0x0f) << 4;

Read_Busy();

CS = 1;

Send_Byte(0XF8);//发送命令命令

//发送命令

Send_Byte(temph);

Send_Byte(templ);

CS = 0;

}

//发送数据

voidWrite_Dat(uint8 dat)

{

uint8temph = 0;

uint8templ = 0;

//制作发送数据格式

temph = dat& 0xf0;

templ = (dat& 0x0f) << 4;

Read_Busy();

CS = 1;

Send_Byte(0XFA);//发送数据命令

Send_Byte(temph);//发送数据

Send_Byte(templ);

CS = 0;

}

//在指定位置显示半字宽字符

voidDis_HCGROM(uint8 x,uint8 y,uint8 dat) {

uint8addr;

switch(y)

{

case 0:addr = 0x80 + x;break;

case 1:addr = 0x90 + x;break;

case 2:addr = 0x88 + x;break;

case 3:addr = 0x98 + x;break;

default:break;

}

Write_Cmd(addr);

Write_Dat(dat);

}

//指定位置显示字符串

voidDis_String(uint8 x, uint8 y, uint8 len, uint8 *dat) {

uint8addr,i;

switch(y)

{

case 0:addr = 0x80 + x;break;

case 1:addr = 0x90 + x;break;

case 2:addr = 0x88 + x;break;

case 3:addr = 0x98 + x;break;

default:break;

}

Write_Cmd(addr);

for(i = 0;i

{

Write_Dat(*dat++);

}

}

//制定位置显示8位无符号数字

void Dis_UNum8(uint8 x,uint8 y,uint8 dat)

{

uint8addr;

switch(y)

{

case 0:addr = 0x80 + x;break;

case 1:addr = 0x90 + x;break;

case 2:addr = 0x88 + x;break;

case 3:addr = 0x98 + x;break;

default:break;

}

Write_Cmd(addr);

Write_Dat(dat/100%10+'0');

Write_Dat(dat/10%10+'0');

Write_Dat(dat/1%10+'0');

}

//制定位置显示16位无符号数字

void Dis_UNum16(uint8 x,uint8 y,uint8 dat) {

uint8addr;

switch(y)

{

case 0:addr = 0x80 + x;break;

case 1:addr = 0x90 + x;break;

case 2:addr = 0x88 + x;break;

case 3:addr = 0x98 + x;break;

default:break;

}

Write_Cmd(addr);

Write_Dat(dat/10000%10+'0');

Write_Dat(dat/1000%10+'0');

Write_Dat(dat/100%10+'0');

Write_Dat(dat/10%10+'0');

Write_Dat(dat/1%10+'0');

}

//在指定位置显示汉字

//x范围：0-7，y范围：0-3

//dat：汉字字形码

voidDis_GB(uint8 x,uint8 y,uint16 dat) {

uint8addr;

switch(y)

{

case 0:addr = 0x80 + x;break;

case 1:addr = 0x90 + x;break;

case 2:addr = 0x88 + x;break;

case 3:addr = 0x98 + x;break;

default:break;

}

Write_Cmd(addr);

Write_Dat((uint8)(dat>> 8));

Write_Dat((uint8)(dat));

}

//LCD初始化

voidLCD_Init(void)

{

/*RST = 0;

delay5ms();

delay5ms();

RST = 1;

PSB = 0;*/

Write_Cmd(0X30);

Write_Cmd(0X01);

Write_Cmd(0X02);

Write_Cmd(0X0C);

}

void main(void)

{

LCD_Init();

while(1)

{

Dis_GB(0,0,0xc9b5);

Dis_HCGROM(1,0,0x03);

Dis_String(0,1,13,strint1);

Dis_UNum8(0,2,250);

} }