|
请帮我,我用的是C8051F020的单片机 想驱动1602的液晶屏显示时钟。连接通电之后液晶屏就只有背光其他的什么都没有,请帮我看看程序哪有问题,F020初始化真麻烦,帮我看看是不是哪漏了。谢谢大家
#include<C8051f020.h>
#define uchar unsigned char
#define uint unsigned int
sbit rs=P2^5;
sbit lcden=P2^3;
sbit rd=P2^7;
uchar count;
char miao,shi,fen;
uchar code table[]=" 2009-9-30 Wed";
uchar code table1[]=" 00:00:00";
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void write_com(uchar com)
{
rd=0;
rs=0;
lcden=0;
P1=com;
delay(12);
lcden=1;
delay(12);
lcden=0;
}
void write_date(uchar date)
{
rd=0;
rs=1;
lcden=0;
P1=date;
delay(12);
lcden=1;
delay(12);
lcden=0;
}
void init()
{
uchar num;
WDTCN=0xDE;
WDTCN=0xAD;
XBR2=0x40;
P1MDIN=0xFF;
P1MDOUT=0xFF;
rd=0;
lcden=0;
// fen=59;
// miao=53;
// shi=23;
write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
write_com(0x80);
for(num=0;num<15;num++)
{
write_date(table[num]);
delay(12);
}
write_com(0x80+0x40);
for(num=0;num<12;num++)
{
write_date(table1[num]);
delay(12);
}
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
void write_sfm(uchar add,uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x40+add);
write_date(0x30+shi);
write_date(0x30+ge);
}
void main()
{
init();
}
void timer0() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
count++;
if(count==41)
{
count=0;
miao++;
if(miao==60)
{
miao=0;
fen++;
if(fen==60)
{
fen=0;
shi++;
if(shi==24)
{
shi=0;
}
write_sfm(4,shi);
}
write_sfm(7,fen);
}
write_sfm(10,miao);
}
} |
阿莫论坛20周年了!感谢大家的支持与爱护!!
曾经有一段真挚的爱情摆在我的面前,我没有珍惜,现在想起来,还好我没有珍惜……
|