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大哥大姐们好:
小弟初学单片机,在资料的帮助下,用89C2051和DS1302制作了一个电子时钟,并用6位数码馆分别显示时,分,秒,显示器驱动用的是74LS164;写的程序如下,显示的数字是:141414 麻烦朋友们给我指出一下错误在那里? 本人邮箱:wangxianmin1987@yahoo.com.cn 非常谢谢!
DS1302的初始化及显示:
#include "reg51.h"
#include "typedef.h"
#include "lcd.h"
#include "ds1302.h"
#include "key.h"
#define uchar unsigned char
void reset_3w();
void wbyte_3w(uchar);
uchar rbyte_3w();
void write_byte(uchar Clock_Add,uchar Clock_Data);
uchar read_byte(uchar);
void write_clock_burst();
void ds1302_init();
void ds1302_task();
void dis();
sbit DAT=P1^0;
sbit CLK=P1^1;
uchar Disbuffer[6]={0,0,0,0,0,0};
uchar code tab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x08,0x40,0x01};
uchar code hex2bcd[] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, /* 00-09 */
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, /* 10-19 */
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, /* 20-29 */
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, /* 30-39 */
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, /* 40-49 */
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, /* 50-59 */
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, /* 60-69 */
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, /* 70-79 */
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, /* 80-89 */
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, /* 90-99 */
};
uchar code bcd2hex[] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, /* 00-09 */
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 0, 0, 0, 0, 0, 0, /* 10-19 */
20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 0, 0, 0, 0, 0, 0, /* 20-29 */
30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 0, 0, 0, 0, 0, 0, /* 30-39 */
40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 0, 0, 0, 0, 0, 0, /* 40-49 */
50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 0, 0, 0, 0, 0, 0, /* 50-59 */
60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 0, 0, 0, 0, 0, 0, /* 60-69 */
70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 0, 0, 0, 0, 0, 0, /* 70-79 */
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 0, 0, 0, 0, 0, 0, /* 80-89 */
90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 0, 0, 0, 0, 0, 0, /* 90-99 */
};
void reset_3w() /* ----- reset and enable the 3-wire interface ------ */
{
SCLK = 0;
RST = 0;
RST = 1;
}
void wbyte_3w(uchar W_Byte) /* ------ write one byte to the device ------- */
{
uchar i;
for(i = 0; i < 8; ++i)
{
IO = 0;
if(W_Byte & 0x01)
{
IO = 1; /* set port pin high to read data */
}
SCLK = 0;
SCLK = 1;
W_Byte > > = 1;
}
}
uchar rbyte_3w() //read one byte from the device
{
uchar i;
uchar R_Byte;
uchar TmpByte;
R_Byte = 0x00;
IO = 1;
for(i = 0; i < 8; i++)
{
SCLK = 1;
SCLK = 0;
TmpByte = (uchar)IO;
TmpByte < <= 7;
R_Byte > > = 1;
R_Byte |= TmpByte;
}
return R_Byte;
}
void write_byte(uchar Clock_Add,uchar Clock_Data) //write one byte using values entered by user
{
reset_3w();
wbyte_3w(Clock_Add);
wbyte_3w(Clock_Data);
reset_3w();
}
void write_clock_burst()
{
reset_3w();
wbyte_3w(CLOCK_BURST_ADD); /* clock burst write (eight registers) */
wbyte_3w(hex2bcd[sec]);
wbyte_3w(hex2bcd[min]);
wbyte_3w(hex2bcd[hour]);
wbyte_3w(hex2bcd[date]);
wbyte_3w(hex2bcd[month]);
wbyte_3w(hex2bcd[day_of_week]);
wbyte_3w(hex2bcd[year]);
wbyte_3w(0); /* must write control register in burst mode */
reset_3w();
}
uchar read_byte(uchar Clock_Add) // Read one byte from DS1302
{
uchar Clock_Data;
reset_3w();
wbyte_3w(Clock_Add);
Clock_Data = rbyte_3w();
reset_3w();
return(Clock_Data);
}
void ds1302_init() /* --- initialize time & date for default value --- */
/* Note: NO error checking is done on the user entries! */
{
reset_3w();
wbyte_3w(0x8e); // control register
wbyte_3w(0); // disable write protect
reset_3w();
wbyte_3w(0x90); // trickle charger register
wbyte_3w(0xa4); //enable, 2 diodes, 8K resistor
write_clock_burst(); //写入初始化时间
}
void sendchar(uchar byte)
{
uchar led1,jj,led;
led=tab[byte];
for(jj=0;jj <8;jj++)
{
led1=led&0x1;
if (led1==0x1)
DAT=1;//DATA=1
else
DAT=0;//DATA=0
CLK=0;CLK=1;//clk=0~1
led=led> > 1;
}
}
void delay_50ms(unsigned int t)
{
unsigned int j;
for(;t> 0;t--)
for(j=6245;j> 0;j--)
{;}
}
void delay_50ms(unsigned int t);
void sendchar(uchar byte);
void ds1302_task()
{
int i,j;
uchar a,b,c,d,e,f;
//if(!key_enable)
//{
sec = bcd2hex[read_byte(READ_SEC_ADD)]; //读DS1302 sec
min = bcd2hex[read_byte(READ_MIN_ADD)]; //读DS1302 min
// hour = bcd2hex[read_byte(READ_HOUR_ADD)]; //读DS1302 hour
// date = bcd2hex[read_byte(READ_DATE_ADD)]; //读DS1302 day和day_of_week
//day_of_week = bcd2hex[read_byte(READ_DOW_ADD)];
// month = bcd2hex[read_byte(READ_MONTH_ADD)]; //读DS1302 month
// year = bcd2hex[read_byte(READ_YEAR_ADD)]; //读DS1302 year
//}
a=hour/10;
b=hour%10;
c=min/10;
d=min%10;
e=sec/10;
f=sec%10;
Disbuffer[0]=a;
Disbuffer[1]=b;
Disbuffer[2]=c;
Disbuffer[3]=d;
Disbuffer[4]=e;
Disbuffer[5]=f;
for(i=0;i <6;i++)
{
sendchar(Disbuffer[i]);
}
delay_50ms(10);
}
主程序:
#include "reg51.h"
#include "typedef.h"
#include "lcd.h"
#include "key.h"
#include "alarm_clock.h"
#include "ds1302.h"
void main()
{
ds1302_init();
while(1)
{
ds1302_task();
}
}
发表时间:2007年4月29日7:11:03