新手求教: 如何用PICkit2在1602A LCD上显示时钟

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5条回答

millwood0

1楼-- · 2020-02-08 11:54

I will tell you how if you show me how you can brush your teeth with your bicycle.

zengyunming

2楼-- · 2020-02-08 13:06

老兄你的资料很模糊，你用什么芯片，电路是怎样的，我最近写了一个，用DS1302 rtc芯片，51，也是用1602液晶，只写了显示和调时功能，没有闹钟，给你参考一下。
#include <reg52.h>
#include <intrins.h>
#define  uint unsigned int
#define  uchar unsigned char
#include<stdio.h>
#include<intrins.h>

#define Data P0

sbit SCK=P3^6;
sbit SDA=P3^4;
sbit RST = P3^5; // DS1302复位

sbit rs=P2^4;
sbit rw=P2^5;
sbit e=P2^6;

sbit d1=P1^5;
sbit d2=P1^3;

code unsigned char write_rtc_address[7]={0x80,0x82,0x84,0x86,0x88,0x8a,0x8c}; //秒分时日月周年最低位读写位
code unsigned char read_rtc_address[7]={0x81,0x83,0x85,0x87,0x89,0x8b,0x8d};

unsigned char l_tmpdate[7]={0,29,23,4,4,3,11};//秒分时日月周年08-05-15 12:00:00
unsigned char l_tmpdisplay[8];
//bit ReadRTC_Flag;

char data comstart[]="                                     ";

uchar code riqi[]=" 2011-04-12 MOD ";
uchar code shijian[]=" 00:00:00 ";
uchar code shijian1[]="0123456789";
//uchar code shijian[]=" 00-00-00 ";

/*void InitTIMER0(void) //定时器0初始化
{
TMOD|=0x01;//定时器设置 16位
TH0=0xef;//初始化值
TL0=0xf0;
ET0=1;
TR0=1;
EA=1;
}*/

void Write_Ds1302_Byte(unsigned  char temp)
{
unsigned char i;
for (i=0;i<8;i++)    //循环8次写入数据
  {
SCK=0;
   SDA=temp&0x01;       //每次传输低字节
   temp>>=1;       //右移一位
   SCK=1;
}
}

/****************************************************************************/
void Write_Ds1302( unsigned char address,unsigned char dat )
{
RST=0;
_nop_();
SCK=0;
_nop_();
RST=1;
_nop_(); //启动
Write_Ds1302_Byte(address); //发送地址
Write_Ds1302_Byte(dat);    //发送数据
RST=0;       //恢复
}
/****************************************************************************/
unsigned char Read_Ds1302 ( unsigned char address )
{
unsigned char i,temp=0x00;
RST=0;
_nop_();
SCK=0;
_nop_();
RST=1;
_nop_();
Write_Ds1302_Byte(address);
for (i=0;i<8;i++)    //循环8次读取数据
{
      if(SDA)
      temp|=0x80;       //每次传输低字节
      SCK=0;
      temp>>=1;          //右移一位
      SCK=1;
}
RST=0;
_nop_();       //以下为DS1302复位的稳定时间
RST=0;
SCK=0;
_nop_();
SCK=1;
_nop_();
SDA=0;
_nop_();
SDA=1;
_nop_();
return (temp);       //返回
}
/****************************************************************************/
void Read_RTC(void)    //读取日历
{
unsigned char i,*p;
p=read_rtc_address; //地址传递
for(i=0;i<7;i++)    //分7次读取秒分时日月周年
{
  l_tmpdate=Read_Ds1302(*p);
  p++;
}
}
/***********************************************************************/
void Set_RTC(void)    //设定日历
{
unsigned char i,*p,tmp;
for(i=0;i<7;i++){          //BCD处理
         tmp=l_tmpdate/10;
         l_tmpdate=l_tmpdate%10;
         l_tmpdate=l_tmpdate+tmp*16;
}
Write_Ds1302(0x8E,0X00);

p=write_rtc_address; //传地址
for(i=0;i<7;i++)       //7次写入秒分时日月周年
      {
            Write_Ds1302(*p,l_tmpdate);
         p++;
      }
   Write_Ds1302(0x8E,0x80);
}

void cominnt(void)
{

TMOD=0x21;//设置定时器1为工作方式2
TH1=0xfd;//给定时器1赋值高8位
TL1=0xfd;//?给定时器1赋值瓦8位
TR1=1;//启动定时器1
REN=1;//
SM0=0;//设置串行数据方式
SM1=1;//设置串行数据方式
RI=0;
TI=0;
}

/*void tim(void) interrupt 1 using 1//中断，用于数码管扫描
{

static unsigned char i,num;
TH0=0xf5;
TL0=0xe0;

P0=table[l_tmpdisplay];    //查表法得到要显示数字的数码段
P2=table1[7-i];
i++;
if(i==8)
   {
   i=0;
   num++;
   if(10==num)    //隔段时间读取1302的数据。时间间隔可以调整
      {
      ReadRTC_Flag=1; //使用标志位判断
      num=0;
      }

   }
}*/

void delay (uint chan)//yan shi han shu
{
while(--chan);
}
//
void xiemd(uchar md)//qu ming ding 写命令  液晶
{
delay(500);
rs=0;
rw=0;
e=0;
delay(1);
e=1;
P0=md;
delay(5);
e=0;

}
//
void xiesu(uchar su)//qu shu ju 写数据液晶
{
delay(500);
rs=1;
rw=0;
e=0;
delay(1);

e=1;
P0=su;
delay(5);
e=0;

}
//
void wchar1 (uchar age,uchar a)//xie ru ding er hang han shu (age)wei wei shu (B)shi yao xie de shu ju
{
uchar z;
z=0x80+age;
xiemd(z);

xiesu(a);
}
//
void wchar2 (uchar bge,uchar b)//xie ru ding er hang han shu (beg)wei wei shu (B)shi yao xie de shu ju
{
uchar a;
a=0xc0+bge;
xiemd(a);

xiesu(b);
}

void innt()
{
uchar c;

xiemd(0x38);//qing ping
xiemd(0x38);//qing ping
xiemd(0x38);//qing ping
xiemd(0x06);//qing ping
xiemd(0x0c);//xianshi kai  guan kongzhi
xiemd(0x01);//gong neng she zhi
for(c=0;c<15;c++){

wchar2(c,shijian[c]);
   wchar1(c,riqi[c]);}
}
/////////////////////////////////////////////////////////
uchar keyscan(void)//键盘扫描函数，使用行列反转扫描法
{
uchar cord_h,cord_l;//行列值
P3=0x0f;          //行线输出全为0
cord_h=P3&0x0f;    //读入列线值
if(cord_h!=0x0f) //先检测有无按键按下
{
  delay(100);       //去抖
  if(cord_h!=0x0f)
  {
cord_h=P3&0x0f;  //读入列线值
P3=cord_h|0xf0;  //输出当前列线值
cord_l=P3&0xf0;  //读入行线值
return(cord_h+cord_l);//键盘最后组合码值并返回
}
  }return(0xff);    //否则返回固定值0xff
}

void fcom(unsigned char h)
{
unsigned char b;

for(b=0;b<h;b++){
         SBUF=comstart;
while(!TI);//判断发送是否完成
TI=0;}
}

/*void comst1 (void)
{
uchar a;
for(a=0;a<7;a++)
{
   SBUF=l_tmpdate[a];
while(!TI);//判断发送是否完成
TI=0;//发送标志位清零
}

}*/

unsigned char comrt (void)
{
uchar rd;
{
rd= SBUF;
while(!RI);//判断jieshou是否完成
RI=0;//jieshou 标志位清零
return (rd);

}
}

void main()///////////////////////////////////////////主程序//////////////////////////////////////////////////
{
unsigned char bao=0, miao,miaoshi,miaoge,fen,fenshi,fenge,shi,shishi,shige,biao1,biao2,biao3,key,stfen=30,stshi=30,ri,rishi,rige,stri;//shi jian bian liang sheng ming

innt();//液晶初始化
      cominnt();//chun kou chu shi hua
sprintf( comstart,"Ds1302 for LCD1602 time clok ");fcom(31);
sprintf( comstart,"innting........ ");fcom(19);// jingru qi dong biao

biao1=1;P1=0xff;biao2=0;biao3=0;

while(1)//zhu xun huan
{
if(RI==1){bao=comrt();
if(bao=='o')sprintf( comstart,"com  on ");
if(bao!='o')sprintf( comstart,"com off ");

fcom(11);
}

   key=keyscan();//调用键盘扫miao
   switch(key)
     {
   /* case 0x7e:biao1=0;break;//0 按下相应的键显示相对应的码值
   case 0x7d:biao1=1;break;//1
   case 0x7b:P0=0xa4;break;//2
   case 0x77:P0=0xb0;break;//3
   case 0xbe:P0=0x99;break;//4
   case 0xbd:P0=0x92;break;//5
   case 0xbb:P0=0x82;break;//6
   case 0xb7:P0=0xf8;break;//7
   case 0xde:P0=0x80;break;//8
   case 0xdd:P0=0x90;break;//9*/
   //case 0xdb:biao1=0;break;//a
/*  case 0xd7:P0=0x83;break;//b
   case 0xee:P0=0xc6;break;//c*/
   case 0xee:biao1=0;break;//d queren
//  case 0xeb:P0=0x86;break;//e
   // case 0xe7:P0=0x8e;break;
}
if(biao1==0){
biao2=0;

wchar2(0,'S');wchar2(1,'e');wchar2(2,'t');wchar2(3,':'); //xiang LCD shang zen jia SET biao zhi

sprintf(comstart,"Rtc set mode ");fcom(15);//fa song chuan xingbiao qi

while(!biao1)//jin ru she zhi zhu xin huan
{

   key=keyscan();//调用键盘扫描，
   switch(key)
     {
   case 0xe7:biao1=1;break;//quxiao
   case 0x7d:biao2=1;break;
   case 0x7b:biao2=2;break;
   case 0x77:biao2=3;break;
   case 0xbe:biao2=4;break;//4

     }
if(biao2==1){
sprintf(comstart,"Set RTC for Ds1302 ");fcom(22);
xiemd(0x0f);//kai lcd guang biao
while(biao2==1)
{
P1=0xf7; key=keyscan();//调用键盘扫描?
   switch(key)
     {
   case 0xe7:biao2=0;break;//quxiao
   case 0x7b:stfen++;if(stfen>=60)stfen=0;break;//2
      case 0x77:stfen--;if(stfen<=0)stfen=60;break;//3
         case 0xbd:stshi++;if(stshi>=24)stshi=0;break;//5
      case 0xbb:stshi--;if(stshi<=0)stshi=23;break;//6

     }

     l_tmpdate[1]=stfen;///
   fen=l_tmpdate[1];
fenshi=fen/10;//////////fen chu li duan
fenge=fen%10;
wchar2(8,shijian1[fenge]);
wchar2(7,shijian1[fenshi]);///

   l_tmpdate[2]=stshi;//
   shi=l_tmpdate[2];
shishi=shi/10;/////////////shi chu li duan
shige=shi%10;
wchar2(5,shijian1[shige]);
            wchar2(4,shijian1[shishi]);///

stri=4;
l_tmpdate[3]=stri;
ri=l_tmpdate[3];
rishi=ri/10;
rige=ri%10;
wchar1(10,shijian1[rige]);
wchar1(9,shijian1[rishi]);


   while(key==0xbd){key=keyscan();}//an jian song shou jian ce
            while(key==0xbb){key=keyscan();}//an jian song shou jian ce
   while(key==0x77){key=keyscan();}//an jian song shou jian ce
   while(key==0x7b){key=keyscan();}//an jian song shou jian ce
while(key==0xe7){key=keyscan();}//an jian song shou jian ce
}
sprintf(comstart,"Write RTC for Ds1302 ");fcom(25);//fa song chuan xingbiao qi
Set_RTC();//设定完成后写入ds1302

}

if(biao2==2){
sprintf(comstart,"biao2=2 ");fcom(13);//fa song chuan xingbiao qi
   xiemd(0x0f);
while(biao2==2)
{
P1=0xfb;
key=keyscan();//调用键盘扫描?
   switch(key)
     {
   case 0xe7:biao2=0;break;//quxiao tui chu

     }

               while(key==0xe7){key=keyscan();}//an jian song shou jian ce
}

}
if(biao2==3){
sprintf(comstart,"biao2=3 ");fcom(13);//fa song chuan xingbiao qi
xiemd(0x0f);
while(biao2==3)
{
P1=0xfd; //led zhi shi
key=keyscan();//调用键盘扫描?
   switch(key)
     {
   case 0xe7:biao2=0;break;//quxiao
     }
//wchar2(0,' ');
//wchar2(1,' ');wchar2(2,' ');wchar2(3,' ');// xiemd(0x0f);
//d1=1;d2=1;
while(key==0xe7){key=keyscan();}//an jian song shou jian ce
}

}

if(biao2==4){
sprintf(comstart,"biao2=4 ");fcom(13);//fa song chuan xingbiao qi
while(biao2==4)
{
P1=0xfe; //LED zhi shi
key=keyscan();//调用键盘扫描?
   switch(key)
     {
   case 0xe7:biao2=0;break;//quxiao
     }
while(key==0xe7){key=keyscan();}//an jian song shou jian ce
}

}
xiemd(0x0c);//kuan bi guan biao
P1=0xff;//led zhi shi quan mei
}

wchar2(0,' ');wchar2(1,' ');wchar2(2,' ');wchar2(3,' ');//qing chu LCD she zhi zhuang tai xian shi
biao3=0;//cong xing sao miao nian yue ri biao ji
}

if(biao1==1){
if(biao3==0){
if(bao=='o'){sprintf(comstart,"Delay .. read in Ds1302 time ");fcom(31);}
delay(30000);
   }
Read_RTC();
        miao=l_tmpdate[0];
miaoshi=(miao/16)&0x07;
miaoge=miao&0X0f;
wchar2(11,shijian1[miaoge]);
delay(1000);
wchar2(10,shijian1[miaoshi]);miao=(miaoshi*10+miaoge);
delay(1000);

if(biao3==0){if(bao=='o'){sprintf(comstart,"read once rtc ");fcom(15);}
miao=1;biao3=2;}

if(miao==1){
if(bao=='o'){sprintf(comstart,"dufen ");fcom(8);}
delay(10000);
fen=l_tmpdate[1];
fenshi=(fen/16)&0x07;
fenge=fen&0X0f;
wchar2(8,shijian1[fenge]);
wchar2(7,shijian1[fenshi]);
if(biao3==2){biao3=1;fen=1;}

if(fen>=1){ if(bao=='o'){sprintf(comstart,"dushi ");fcom(8);}
delay(1000);
shi=l_tmpdate[2];
shishi=(shi/16)&0x07;
shige=shi&0X0f;
wchar2(5,shijian1[shige]);
wchar2(4,shijian1[shishi]);

if(bao=='o'){sprintf(comstart,"du ri ");fcom(8);}
delay(1000);
ri=l_tmpdate[3];
rishi=(ri/16)&0x07;
rige=ri&0X0f;
wchar1(10,shijian1[rige]);
wchar1(9,shijian1[rishi]);

}
}

}

}

}

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zengyunming
3楼-- · 2020-02-08 16:42

我觉得你可以用定时器来写，不要求时间准确的话。我以前写过。

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saintjet
4楼-- · 2020-02-08 22:34

回复【2楼】zengyunming
-----------------------------------------------------------------------

老师叫我们用的是pic16f690.  不用日历功能, 只要时分秒就行,再加上一个闹钟功能,因为到时候我们还需要用面包板连接按钮和扬声器还有1602A,pic16f690芯片的pickit2.  求解答啊  感激不尽啊!!

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颜靖峰
5楼-- · 2020-02-08 23:22

精彩回答 2  元偷偷看……

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