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1602

已有 273 次阅读2017-8-3 11:01

#include<reg52.h>
typedef unsigned char uint8;
typedef unsigned int uint16;
sbit rs=P2^6;
sbit rw=P2^5;
sbit e=P2^7;
uint8 a[16]="perchin designed";
uint8 b[27]="welcome to the world of mcu";
void delay(uint16 i)  //1us
{
while(i--);
}
void wrc(uint8 c)
{
delay(1000);
rs=0;
rw=0;
e=0;
P0=c;
e=1;
delay(10);
e=0;
/*
P0=c<<4;
e=1;
e=0;
}
void wrd(uint8 dat)
{
delay(1000);
rs=1;
rw=0;
e=0;
P0=dat;
e=1;
delay(10);
e=0;
/*
P0=dat<<4;
e=1;
e=0;
rs=0;
}
void init()
{
delay(1000);
/*wrc(0x32);
wrc(0x28);
wrc(0x28);
wrc(0x38);
wrc(0x38);
wrc(0x38);
wrc(0x0c);
wrc(0x01);
}
void display()
{
uint8 i;
wrc(0x00+0x80);
for(i=0;i<16;i++)
{
wrd(a[i]);
}
wrc(0x40+0x80);
for(i=0;i<27;i++)
{
wrd(b[i]);
}
wrc(0x07);
while(1)
{
wrc(0x00+0x80);
for(i=0;i<16;i++)
{
wrd(a[i]);
delay(30000);
}
}
}
void main()
{
init();
while(1)
{
display();
}
}