按鍵操作lcd1602顯示

ID:138426 · 發表于 2017-7-26 13:47

自己寫的小程序，分享一下
# include <reg52.h>
#define uint unsigned int
# define uchar unsigned char
uchar code table1[]="hello";
uchar code table2[]="you are wlecome";
sbit rs=P2^4;
sbit rw=P2^5;
sbit en=P2^6;
sbit dual=P2^2;
sbit wual=P2^3;
sbit key1=P3^1;
sbit key2=P3^2;
uint i;
void delay_1ms(uint z)
{
uint i;
for(;z>0;z--)
for(i=110;i>0;i--);
}
void writecom(uchar com)
{ en=0;
rs=0;
rw=0;
P0=com;
delay_1ms(10);
en=1;
delay_1ms(10);
en=0;
}
void writedat(uchar dat)
{ en=0;
rs=1;
rw=0;
P0=dat;
delay_1ms(10);
en=1;
delay_1ms(10);
en=0;
}
void lcdinit()
{
dual=0;
wual=0;
writecom(0x38);
writecom(0x0e);
writecom(0x06);
writecom(0x01);
}
void main()
{    lcdinit();
   while(1)
   {
     if(key1==0)
{
delay_1ms(10);
writecom(0x80);
if(key1==0)
{
for(i=0;i<5;i++)
   writedat(table1[i]);
delay_1ms(5000);
}
   while(!key1);
}
writecom(0x01);
     if(key2==0)
{
delay_1ms(10);
writecom(0x80+0x40);
if(key2==0)
{
for(i=0;i<16;i++)
   writedat(table2[i]);
delay_1ms(5000);
}
   while(!key2);
}
     writecom(0x01);

   }
}

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按鍵操作lcd1602顯示