51驱动1602液晶+按键protues仿真
程序:
本文引用地址://m.amcfsurvey.com/article/201611/321330.htm#include
#define uchar unsigned char
#define uint unsigned int
unsigned char Trg;
unsigned char Cont;
sbit lcdrs=P0^4;
sbit lcden=P0^6;
uchar code table1[]="20121029SAT12:00";
uchar code table2[]="0123456789";
void delay(uint z)
{
uint x,y;
for(x=0;x
for(y=0;y<110;y++)
;
}
void KeyRead( void )
{
unsigned char ReadData = P1^0xff;
// 1
Trg = ReadData & (ReadData ^ Cont);
// 2
Cont = ReadData;
// 3
}
void write_com(uchar com)
{
lcdrs=0;
P2=com;
delay(2);
lcden=1;
lcden=0;
}
void write_data(uchar dat)
{
lcdrs=1;
P2=dat;
delay(2);
lcden=1;
lcden=0;
}
voidlcd1602_inti()
{
write_com(0x38);
delay(5);
write_com(0x0c);
delay(5);
write_com(0x06);
delay(5);
write_com(0x01);//清屏
delay(5);
}
void main()
{
uchar i,x,y,z,w,p=0,m,a,s,d;
lcd1602_inti();
write_com(0x01);
while(1)
{ KeyRead();
write_com(0x80+0x00);
for(i=0;i<4;i++)
{
write_data(table1[i]);
delay(5);
}
write_com(0x80+0x40);
write_data(table2[x]);
delay(10);
write_data(table2[y]);
delay(10);
write_com(0x80+0x43);
write_data(table2[z]);
delay(10);
write_data(table2[w]);
delay(10);
write_com(0x80+0x46);
write_data(table2[d]);
delay(10);
write_com(0x80+0x48);
write_data(table2[m]);
delay(10);
if(Trg==0x01)
{
switch(p%4)
{case 1: {a++;
if(a==21)
a=0;
}break;
case 2:{s++;
if(s==39)
s=0;
}break;
case 3:{d++;
if(d==9)