51单片机用C语言在液晶12864显示汉字.doc
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#includereg52.h
#define uchar unsigned char
#define uint unsigned int
sbit rs=P2^4;
sbit rw=P2^5;
sbit e=P2^6;
sbit psb=P2^7;
uchar table[]=好好学习,天天向上!2010-11-18 ;
void write_12864com(uchar com);
void write_12864dat(uchar dat);
void initial(void);
void display1(void);
void display2(void);
void display3(void);
void delay_50us(uint t)
{
uint j;
for(;t0;t--)
for(j=19;j0;j--);
}
void delay_50ms(uint t)
{
uint j;
for(;t0;t--)
for(j=6245;j0;j--);
}
void main(void)
{
initial();
while(1)
{
// display1();
// display2();
display3();
}
}
void write_12864com(uchar com)
{
rw=0;
rs=0;
delay_50us(1);
P0=com;
e=1;
delay_50us(10);
e=0;
delay_50us(2);
}
void write_12864dat(uchar dat)
{
rw=0;
rs=1;
delay_50us(1);
P0=dat;
e=1;
delay_50us(10);
e=0;
delay_50us(2);
}
void initial(void)
{
delay_50ms(2);
write_12864com(0x30);
delay_50us(4);
write_12864com(0x30);
delay_50us(4);
write_12864com(0x0f);
delay_50us(4);
write_12864com(0x01);
delay_50us(300);
write_12864com(0x06);
delay_50us(10);
}
//显示字符
void display1(void)
{
uchar i,a;
write_12864com(0x80);
a=0x10;
delay_50us(2);
for(i=0;i16;i++)
{
write_12864dat(a);
delay_50us(1);
a++;
}
}
//显示汉字
void display2(void)
{
uchar i;
uchar a,b;
a=0xBA;
b=0xC0;
for(i=0;i16;i++)
{
write_12864dat(a);
write_12864dat(b);
delay_50us(1);
b++;
}
}
void display3(void)
{
uchar i;
write_12864com(0x80);//设置地址在第一行上面显示
for(i=0;i16;i++)
{
write_12864dat(table[i]);
delay_50us(1);
}
}
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