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	{{#seo:\|title=~~아두위키~~ : ~~아두이노~~ RTC 모듈(DS1302) ~~가이드~~\|title_mode=append\|keywords=~~아두이노~~, ~~정보과학~~, ~~메이커학습~~, ~~수행평가~~, RTC 모듈(DS1302), ~~아두이노 작품~~, ~~캡스톤작품~~, ~~아두이노 예제코드~~\|description=~~아두이노로~~ RTC 모듈(DS1302)~~을 제어하는 방법~~(~~기본정보~~, 회로, ~~예제 코드~~)~~을 소개합니다~~. ~~정보과학과 메이커수업에 활용가능합니다~~.}}		{{#seo:\|title=ArduWiki: Arduino RTC Module (DS1302) Guide\|title_mode=append\|keywords=Arduino, Information Science, Maker Learning, Performance Evaluation, RTC Module (DS1302), Arduino Projects, Capstone Projects, Arduino Example Code\|description=Introduces how to control the RTC Module (DS1302) with Arduino (basic information, circuit, example code). Can be used in Information Science and Maker classes.}}
	[[~~File~~:Rtc모듈대표이미지.jpg\|~~center~~\|class=coders100]]		[[파일:Rtc모듈대표이미지.jpg\|가운데\|class=coders100]]
	This is a module that can remember the time even when it is not connected to a board.		This is a module that can remember the time even when it is not connected to a board.

ArduWiki: Created page with "{{#seo:|title=아두위키 : 아두이노 RTC 모듈(DS1302) 가이드|title_mode=append|keywords=아두이노, 정보과학, 메이커학습, 수행평가, RTC 모듈(DS1302), 아두이노 작품, 캡스톤작품, 아두이노 예제코드|description=아두이노로 RTC 모듈(DS1302)을 제어하는 방법(기본정보, 회로, 예제 코드)을 소개합니다. 정보과학과 메이커수업에 활용가능합니다.}} File:Rtc모듈대표이미지.jpg|center|clas..."

2024-03-24T02:28:47Z

Created page with "{{#seo:|title=아두위키 : 아두이노 RTC 모듈(DS1302) 가이드|title_mode=append|keywords=아두이노, 정보과학, 메이커학습, 수행평가, RTC 모듈(DS1302), 아두이노 작품, 캡스톤작품, 아두이노 예제코드|description=아두이노로 RTC 모듈(DS1302)을 제어하는 방법(기본정보, 회로, 예제 코드)을 소개합니다. 정보과학과 메이커수업에 활용가능합니다.}} File:Rtc모듈대표이미지.jpg|center|clas..."

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{{#seo:|title=아두위키 : 아두이노 RTC 모듈(DS1302) 가이드|title_mode=append|keywords=아두이노, 정보과학, 메이커학습, 수행평가, RTC 모듈(DS1302), 아두이노 작품, 캡스톤작품, 아두이노 예제코드|description=아두이노로 RTC 모듈(DS1302)을 제어하는 방법(기본정보, 회로, 예제 코드)을 소개합니다. 정보과학과 메이커수업에 활용가능합니다.}}
[[File:Rtc모듈대표이미지.jpg|center|class=coders100]]
This is a module that can remember the time even when it is not connected to a board.

It uses a battery (CR2032).

== '''Specifications''' ==

* Operating Voltage: 3.3V ~ 5V
* Operating Current: 300nA at 2V

== '''Required Hardware''' ==

* RTC Module
* Arduino

== '''Connections''' ==
{| class="wikitable"
| colspan="1" rowspan="1" |RTC module
| colspan="1" rowspan="1" |Arduino
|-
| colspan="1" rowspan="1" |VCC
| colspan="1" rowspan="1" |5V
|-
| colspan="1" rowspan="1" |GND
| colspan="1" rowspan="1" |GND
|-
| colspan="1" rowspan="1" |CLK
| colspan="1" rowspan="1" |D5
|-
| colspan="1" rowspan="1" |DAT
| colspan="1" rowspan="1" |D4
|-
| colspan="1" rowspan="1" |RST
| colspan="1" rowspan="1" |D3
|}
[[File:Rtc 회로.png|center|class=coders70]]

== '''Library''' ==
This document uses the Rtc by Makuna library for Arduino. [[Arduino Libraries]]
[[File:Rtc 라이브러리.png|center|class=coders70]]

== '''Example Code''' ==
The code stores the time at the moment of compilation. There will be a slight difference when uploaded to the board due to the time taken for the upload (since the board is uploaded after compiling, there is a time discrepancy).

[[File:Rtc 예제1.png|center|class=coders50]]
<syntaxhighlight lang="c++" line="1">
#include <ThreeWire.h>
#include <RtcDS1302.h>

//--------------------Modified Section-------------------------------
#define CLK 5 //Specify CLK pin number
#define DAT 4 //Specify DAT pin number
#define RST 3 //Specify RST pin number

ThreeWire myWire(DAT,CLK,RST);
//--------------------------------------------------------------
RtcDS1302<ThreeWire> Rtc(myWire);

void setup ()
{
Serial.begin(57600);

Serial.print("compiled: ");
Serial.print(__DATE__);
Serial.println(__TIME__);

Rtc.Begin();

RtcDateTime compiled = RtcDateTime(__DATE__, __TIME__);
printDateTime(compiled);
Serial.println();

if (!Rtc.IsDateTimeValid())
{
// Common Causes:
// 1) first time you ran and the device wasn't running yet
// 2) the battery on the device is low or even missing

Serial.println("RTC lost confidence in the DateTime!");
Rtc.SetDateTime(compiled);
}

if (Rtc.GetIsWriteProtected())
{
Serial.println("RTC was write protected, enabling writing now");
Rtc.SetIsWriteProtected(false);
}

if (!Rtc.GetIsRunning())
{
Serial.println("RTC was not actively running, starting now");
Rtc.SetIsRunning(true);
}

RtcDateTime now = Rtc.GetDateTime();
if (now < compiled)
{
Serial.println("RTC is older than compile time! (Updating DateTime)");
Rtc.SetDateTime(compiled);
}
else if (now > compiled)
{
Serial.println("RTC is newer than compile time. (this is expected)");
}
else if (now == compiled)
{
Serial.println("RTC is the same as compile time! (not expected but all is fine)");
}
}

void loop ()
{
RtcDateTime now = Rtc.GetDateTime();

printDateTime(now);
Serial.println();

if (!now.IsValid())
{
// Common Causes:
// 1) the battery on the device is low or even missing and the power line was disconnected
Serial.println("RTC lost confidence in the DateTime!");
}

delay(10000); // ten seconds
}

#define countof(a) (sizeof(a) / sizeof(a[0]))

void printDateTime(const RtcDateTime& dt)
{
char datestring[20];

snprintf_P(datestring,
countof(datestring),
PSTR("%02u/%02u/%04u %02u:%02u:%02u"),
dt.Month(),
dt.Day(),
dt.Year(),
dt.Hour(),
dt.Minute(),
dt.Second() );
Serial.print(datestring);
}

</syntaxhighlight>

=== Execution Result ===
[[File:Rtc 실행결과.png|center|class=coders70]]

RTC Module(DS1302) - 편집 역사

2025년 3월 20일 (목) 11:44에 ArduWiki님의 편집