DS1302走时不准？

微风青草 发表于 2015-6-2 00:59:29

// DS1302_Serial_Easy (C)2010 Henning Karlsen
// web: http://www.henningkarlsen.com/electronics
//
// A quick demo of how to use my DS1302-library to
// quickly send time and date information over a serial link
//
// I assume you know how to connect the DS1302.
// DS1302:CE pin -> Arduino Digital 2
//       I/O pin -> Arduino Digital 3
//       SCLK pin-> Arduino Digital 4

#include <DS1302.h>

// Init the DS1302
DS1302 rtc(5, 6, 7);

void setup()
{
// Set the clock to run-mode, and disable the write protection
rtc.halt(false);
rtc.writeProtect(false);

// Setup Serial connection
Serial.begin(9600);

// The following lines can be commented out to use the values already stored in the DS1302
rtc.setDOW(MONDAY);    // Set Day-of-Week to FRIDAY
rtc.setTime(12, 0, 0); // Set the time to 12:00:00 (24hr format)
rtc.setDate(6, 1, 2015); // Set the date to August 6th, 2010
}

void loop()
{
// Send Day-of-Week
Serial.print(rtc.getDOWStr());
Serial.print(" ");

// Send date
Serial.print(rtc.getDateStr());
Serial.print(" -- ");

// Send time
Serial.println(rtc.getTimeStr());

// Wait one second before repeating :)
delay (1000);
}
为什么走的时间跟设置的不一致啊？？？

szj252629941 发表于 2015-6-2 08:51:29

少年硬件电路是怎么样子的？直接买的开发板吗？

wwwusr 发表于 2015-6-2 12:26:12

这个有人说过，貌似是串口输出的时间间隔的问题。
DS1302是一秒一秒的变，但是程序中，串口输出时间值的间隔不是一秒，而是delay(1000)+其它语句运行时间。
这样，就会有DS1302的秒变与串口输出值之间的不同步，实际上就会出现有几个显示不是+1秒的情况。
你可以适当的改下delay()，或者用mills().

微风青草 发表于 2015-6-2 12:33:24

szj252629941 发表于 2015-6-2 08:51 static/image/common/back.gif
少年硬件电路是怎么样子的？直接买的开发板吗？

是。。。Arduino。。的UNO

微风青草 发表于 2015-6-2 12:35:34

wwwusr 发表于 2015-6-2 12:26 static/image/common/back.gif
这个有人说过，貌似是串口输出的时间间隔的问题。
DS1302是一秒一秒的变，但是程序中，串口输出时间值的间 ...

这是差值的问题？？？我的串口走的时间跟设置的时间一点关系都没有，。，，，怎么说呢。。。感觉是程序或者是库文件有问题。，。。

微风青草 发表于 2015-6-2 12:38:56

微风青草发表于 2015-6-2 12:35 static/image/common/back.gif
这是差值的问题？？？我的串口走的时间跟设置的时间一点关系都没有，。，，，怎么说呢。。。感觉是程序或 ...

这，，，，不知道从哪出来的这个时间。。。

zjyylj 发表于 2015-6-2 12:46:46

数据端口接上拉电阻了吗？
http://www.geek-workshop.com/thread-4831-1-1.html

wwwusr 发表于 2015-6-2 12:58:10

微风青草 发表于 2015-6-2 13:18:05

zjyylj 发表于 2015-6-2 12:46 static/image/common/back.gif
数据端口接上拉电阻了吗？
http://www.geek-workshop.com/thread-4831-1-1.html

#include "DS1302.h"

#define REG_SEC 0
#define REG_MIN 1
#define REG_HOUR 2
#define REG_DATE 3
#define REG_MON 4
#define REG_DOW 5
#define REG_YEAR 6
#define REG_WP 7
#define REG_TCR 8

/* Public */

/*Time::Time()
{
this->REG_YEAR = 2010;
this->REG_MON= 1;
this->REG_DATE = 1;
this->REG_HOUR = 0;
this->REG_MIN= 0;
this->REG_SEC= 0;
this->REG_DOW= 5;
}*/ //我加的构造函数
Time::Time()
{
this->year = 2010;
this->mon= 1;
this->date = 1;
this->hour = 0;
this->min= 0;
this->sec= 0;
this->dow= 5;
}

DS1302_RAM::DS1302_RAM()
{
for (int i=0; i<31; i++)
cell=0;
}

DS1302::DS1302(uint8_t ce_pin, uint8_t data_pin, uint8_t sclk_pin)
{
_ce_pin = ce_pin;
_data_pin = data_pin;
_sclk_pin = sclk_pin;

pinMode(_ce_pin, OUTPUT);
pinMode(_sclk_pin, OUTPUT);
}

Time DS1302::getTime()
{
Time t;
_burstRead();
t.sec = _decode(_burstArray);
t.min = _decode(_burstArray);
t.hour = _decodeH(_burstArray);
t.date = _decode(_burstArray);
t.mon = _decode(_burstArray);
t.dow = _burstArray;
t.year = _decodeY(_burstArray)+2000;
return t;
}

void DS1302::setTime(uint8_t hour, uint8_t min, uint8_t sec)
{
if (((hour>=0) && (hour<24)) && ((min>=0) && (min<60)) && ((sec>=0) && (sec<60)))
{
_writeRegister(REG_HOUR, _encode(hour));
_writeRegister(REG_MIN, _encode(min));
_writeRegister(REG_SEC, _encode(sec));
}
}

void DS1302::setDate(uint8_t date, uint8_t mon, uint16_t year)
{
if (((date>0) && (date<=31)) && ((mon>0) && (mon<=12)) && ((year>=2000) && (year<3000)))
{
year -= 2000;
_writeRegister(REG_YEAR, _encode(year));
_writeRegister(REG_MON, _encode(mon));
_writeRegister(REG_DATE, _encode(date));
}
}

void DS1302::setDOW(uint8_t dow)
{
if ((dow>0) && (dow<8))
_writeRegister(REG_DOW, dow);
}

char *DS1302::getTimeStr(uint8_t format)
{
char *output= "xxxxxxxx";
Time t;
t=getTime();
if (t.hour<10)
output=48;
else
output=char((t.hour / 10)+48);
output=char((t.hour % 10)+48);
output=58;
if (t.min<10)
output=48;
else
output=char((t.min / 10)+48);
output=char((t.min % 10)+48);
output=58;
if (format==FORMAT_SHORT)
output=0;
else
{
if (t.sec<10)
output=48;
else
output=char((t.sec / 10)+48);
output=char((t.sec % 10)+48);
output=0;
}
return output;
}

char *DS1302::getDateStr(uint8_t slformat, uint8_t eformat, char divider)
{
char *output= "xxxxxxxxxx";
int yr, offset;
Time t;
t=getTime();
switch (eformat)
{
case FORMAT_LITTLEENDIAN:
if (t.date<10)
output=48;
else
output=char((t.date / 10)+48);
output=char((t.date % 10)+48);
output=divider;
if (t.mon<10)
output=48;
else
output=char((t.mon / 10)+48);
output=char((t.mon % 10)+48);
output=divider;
if (slformat==FORMAT_SHORT)
{
yr=t.year-2000;
if (yr<10)
output=48;
else
output=char((yr / 10)+48);
output=char((yr % 10)+48);
output=0;
}
else
{
yr=t.year;
output=char((yr / 1000)+48);
output=char(((yr % 1000) / 100)+48);
output=char(((yr % 100) / 10)+48);
output=char((yr % 10)+48);
output=0;
}
break;
case FORMAT_BIGENDIAN:
if (slformat==FORMAT_SHORT)
offset=0;
else
offset=2;
if (slformat==FORMAT_SHORT)
{
yr=t.year-2000;
if (yr<10)
output=48;
else
output=char((yr / 10)+48);
output=char((yr % 10)+48);
output=divider;
}
else
{
yr=t.year;
output=char((yr / 1000)+48);
output=char(((yr % 1000) / 100)+48);
output=char(((yr % 100) / 10)+48);
output=char((yr % 10)+48);
output=divider;
}
if (t.mon<10)
output=48;
else
output=char((t.mon / 10)+48);
output=char((t.mon % 10)+48);
output=divider;
if (t.date<10)
output=48;
else
output=char((t.date / 10)+48);
output=char((t.date % 10)+48);
output=0;
break;
case FORMAT_MIDDLEENDIAN:
if (t.mon<10)
output=48;
else
output=char((t.mon / 10)+48);
output=char((t.mon % 10)+48);
output=divider;
if (t.date<10)
output=48;
else
output=char((t.date / 10)+48);
output=char((t.date % 10)+48);
output=divider;
if (slformat==FORMAT_SHORT)
{
yr=t.year-2000;
if (yr<10)
output=48;
else
output=char((yr / 10)+48);
output=char((yr % 10)+48);
output=0;
}
else
{
yr=t.year;
output=char((yr / 1000)+48);
output=char(((yr % 1000) / 100)+48);
output=char(((yr % 100) / 10)+48);
output=char((yr % 10)+48);
output=0;
}
break;
}
return output;
}

char *DS1302::getDOWStr(uint8_t format)
{
char *output= "xxxxxxxxx";
Time t;
t=getTime();
switch (t.dow)
{
case MONDAY:
output="Monday";
break;
case TUESDAY:
output="Tuesday";
break;
case WEDNESDAY:
output="Wednesday";
break;
case THURSDAY:
output="Thursday";
break;
case FRIDAY:
output="Friday";
break;
case SATURDAY:
output="Saturday";
break;
case SUNDAY:
output="Sunday";
break;
}
if (format==FORMAT_SHORT)
output=0;
return output;
}

char *DS1302::getMonthStr(uint8_t format)
{
char *output= "xxxxxxxxx";
Time t;
t=getTime();
switch (t.mon)
{
case 1:
output="January";
break;
case 2:
output="February";
break;
case 3:
output="March";
break;
case 4:
output="April";
break;
case 5:
output="May";
break;
case 6:
output="June";
break;
case 7:
output="July";
break;
case 8:
output="August";
break;
case 9:
output="September";
break;
case 10:
output="October";
break;
case 11:
output="November";
break;
case 12:
output="December";
break;
}
if (format==FORMAT_SHORT)
output=0;
return output;
}

void DS1302::halt(bool enable)
{
uint8_t _reg = _readRegister(REG_SEC);
_reg &= ~(1 << 7);
_reg |= (enable << 7);
_writeRegister(REG_SEC, _reg);
}

void DS1302::writeProtect(bool enable)
{
uint8_t _reg = (enable << 7);
_writeRegister(REG_WP, _reg);
}

void DS1302::setTCR(uint8_t value)
{
_writeRegister(REG_TCR, value);
}

/* Private */

uint8_t DS1302::_readByte()
{
pinMode(_data_pin, INPUT);

uint8_t value = 0;
uint8_t currentBit = 0;

for (int i = 0; i < 8; ++i)
{
currentBit = digitalRead(_data_pin);
value |= (currentBit << i);
digitalWrite(_sclk_pin, HIGH);
delayMicroseconds(1);
digitalWrite(_sclk_pin, LOW);
}
return value;
}

void DS1302::_writeByte(uint8_t value)
{
pinMode(_data_pin, OUTPUT);
shiftOut(_data_pin, _sclk_pin, LSBFIRST, value);
}

uint8_t DS1302::_readRegister(uint8_t reg)
{
uint8_t cmdByte = 129;
cmdByte |= (reg << 1);

uint8_t readValue;

digitalWrite(_sclk_pin, LOW);
digitalWrite(_ce_pin, HIGH);

_writeByte(cmdByte);
readValue = _readByte();

digitalWrite(_ce_pin, LOW);

return readValue;
}

void DS1302::_writeRegister(uint8_t reg, uint8_t value)
{
uint8_t cmdByte = (128 | (reg << 1));

digitalWrite(_sclk_pin, LOW);
digitalWrite(_ce_pin, HIGH);

_writeByte(cmdByte);
_writeByte(value);

digitalWrite(_ce_pin, LOW);
}

void DS1302::_burstRead()
{
digitalWrite(_sclk_pin, LOW);
digitalWrite(_ce_pin, HIGH);

_writeByte(191);
for (int i=0; i<8; i++)
{
_burstArray = _readByte();
}
digitalWrite(_ce_pin, LOW);
}

uint8_t DS1302::_decode(uint8_t value)
{
uint8_t decoded = value & 127;
decoded = (decoded & 15) + 10 * ((decoded & (15 << 4)) >> 4);
return decoded;
}

uint8_t DS1302::_decodeH(uint8_t value)
{
if (value & 128)
value = (value & 15) + (12 * ((value & 32) >> 5));
else
value = (value & 15) + (10 * ((value & 48) >> 4));
return value;
}

uint8_t DS1302::_decodeY(uint8_t value)
{
uint8_t decoded = (value & 15) + 10 * ((value & (15 << 4)) >> 4);
return decoded;
}

uint8_t DS1302::_encode(uint8_t value)
{
uint8_t encoded = ((value / 10) << 4) + (value % 10);
return encoded;
}

void DS1302::writeBuffer(DS1302_RAM r)
{
digitalWrite(_sclk_pin, LOW);
digitalWrite(_ce_pin, HIGH);

_writeByte(254);
for (int i=0; i<31; i++)
{
_writeByte(r.cell);
}
digitalWrite(_ce_pin, LOW);
}

DS1302_RAM DS1302::readBuffer()
{
DS1302_RAM r;

digitalWrite(_sclk_pin, LOW);
digitalWrite(_ce_pin, HIGH);

_writeByte(255);
for (int i=0; i<31; i++)
{
r.cell = _readByte();
}
digitalWrite(_ce_pin, LOW);

return r;
}

void DS1302::poke(uint8_t addr, uint8_t value)
{
if ((addr >=0) && (addr<=30))
{
addr = (addr * 2) + 192;

digitalWrite(_sclk_pin, LOW);
digitalWrite(_ce_pin, HIGH);

_writeByte(addr);
_writeByte(value);

digitalWrite(_ce_pin, LOW);
}
}

uint8_t DS1302::peek(uint8_t addr)
{
if ((addr >=0) && (addr<=30))
{
addr = (addr * 2) + 193;

uint8_t readValue;

digitalWrite(_sclk_pin, LOW);
digitalWrite(_ce_pin, HIGH);

_writeByte(addr);
readValue = _readByte();

digitalWrite(_ce_pin, LOW);

return readValue;
}
else
return 0;
}

是不是我的库函数有问题？

zjyylj 发表于 2015-6-3 11:26:41

哪里下的库?

页: [1]

极客工坊's Archiver

DS1302走时不准？