#include <reg51.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int
/*TS12864A-3 端口定義*/
#define LCD_data P0 //數(shù)據(jù)口
sbit LCD_RS = P3^5; //寄存器選擇輸入
sbit LCD_RW = P3^6; //液晶讀/寫控制
sbit LCD_EN = P3^4; //液晶使能控制
sbit LCD_PSB = P3^7; //串/并方式控制
sbit wela = P2^6;
sbit dula = P2^7;
uchar code dis1[] = {"a"};
uchar code dis2[] = {"b"};
uchar code dis3[] = {"c "};
uchar code dis4[] = {"d "};
#define delayNOP(); {_nop_();_nop_();_nop_();_nop_();};
uchar IRDIS[2];
uchar IRCOM[4];
void delay0(uchar x); //x*0.14MS
void beep();
void dataconv();
void lcd_pos(uchar X,uchar Y); //確定顯示位置/* */
/* 延時函數(shù)
void delay(int ms)
{
while(ms--)
{
uchar i;
for(i=0;i<250;i++)
{
_nop_();
_nop_();
_nop_();
_nop_();
}
}
} */
/*檢查LCD忙狀態(tài) */
/*lcd_busy為1時，忙，等待。lcd-busy為0時,閑，可寫指令與數(shù)據(jù)。
bit lcd_busy()
{
bit result;
LCD_RS = 0;
LCD_RW = 1;
LCD_EN = 1;
delayNOP();
result = (bit)(P0&0x80);
LCD_EN = 0;
return(result);
} 寫指令數(shù)據(jù)到LCD
RS=L，RW=L，E=高脈沖，D0-D7=指令碼。
void lcd_wcmd(uchar cmd)
{
while(lcd_busy());
LCD_RS = 0;
LCD_RW = 0;
LCD_EN = 0;
_nop_();
_nop_();
P0 = cmd;
delayNOP();
LCD_EN = 1;
delayNOP();
LCD_EN = 0;
寫顯示數(shù)據(jù)到LCD
RS=H，RW=L，E=高脈沖，D0-D7=數(shù)據(jù)。
void lcd_wdat(uchar dat)
{
while(lcd_busy());
LCD_RS = 1;
LCD_RW = 0;
LCD_EN = 0;
P0 = dat;
delayNOP();
LCD_EN = 1;
delayNOP();
LCD_EN = 0;
}
LCD初始化設定
void lcd_init()
{
LCD_PSB = 1; //并口方式
lcd_wcmd(0x34); //擴充指令操作
delay(5);
lcd_wcmd(0x30); //基本指令操作
delay(5);
lcd_wcmd(0x0C); //顯示開，關光標
delay(5);
lcd_wcmd(0x01); //清除LCD的顯示內容
delay(5);
}
main()
{
uchar i;
delay(10); //延時
wela=0;
dula=0;
lcd_init(); //初始化LCD
lcd_pos(0,0); //設置顯示位置為第一行的第1個字符
i = 0;
while(dis1[i] != '\0')
{ //顯示字符
lcd_wdat(dis1[i]);
i++;
}
lcd_pos(1,0); //設置顯示位置為第二行的第1個字符
i = 0;
while(dis2[i] != '\0')
{
lcd_wdat(dis2[i]); //顯示字符
i++;
}
lcd_pos(2,0); //設置顯示位置為第三行的第1個字符
i = 0;
while(dis3[i] != '\0')
{
lcd_wdat(dis3[i]); //顯示字符
i++;
}
lcd_pos(3,0); //設置顯示位置為第四行的第1個字符
i = 0;
while(dis4[i] != '\0')
{
lcd_wdat(dis4[i]); //顯示字符
i++;
}
while(1);
}
void delay0(uchar x) //x*0.14MS
{
uchar i;
while(x--)
{
for (i = 0; i<13; i++) {}
}
}
void lcd_pos(uchar X,uchar Y)
{
uchar pos;
if (X==0)
{X=0x80;}
else if (X==1)
{X=0x90;}
else if (X==2)
{X=0x88;}
else if (X==3)
{X=0x98;}
pos = X+Y ;
lcd_wcmd(pos); //顯示地址
}
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