单片机1602

ID:280630 · 发表于 2018-1-29 13:37

#include<reg52.h>
typedef unsigned int u16;
typedef unsigned char u8;

#define DATA P0
sbit rs = P2^1;
sbit rw = P1^5;
sbit en = P1^6;
void delay(u16 num)
{
u16 x,y;
for (x=num; x>0; x--)
for(y=110; y>0; y--);
}
void write_cmd (u8 cmd)
{
rs = 0;
rw = 0;
DATA = cmd;
delay(5);
en = 1;
delay(5);
en = 0;
}
void write_data (u8 dat)
{
rs = 1;
rw = 0;
DATA = dat;
delay(5);
en = 1;
delay(5);
en = 0;
}
void lcd_init (void)
{
write_cmd(0x02);
write_cmd(0x06);
write_cmd(0x0c);
write_cmd(0x38);
write_cmd(0x01);
}

int main (void)
{
rw = 0;
rs = 0;
en = 0;
lcd_init();
write_cmd(0xc0);
write_data('I');
write_data(' ');
write_data(0x26);
write_data(' ');
write_data('U');
while(1);
}

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