아두이노 소프트웨어 시리얼을 이용해서 LED잔상시계를 만들고 있는데여.

ATMEGA328P가 2개인데 하나는 RTC와 블루투스 모듈이 연결되어있고 다른 하나는 LED와 연결되어있습니다.(RTC로 받은 시간 데이터를 LED를 이용하여 시계로 표현)

회로도는 위와 같습니다. 

프로그램은 대강 이렇게 만들었는데여.

RTC 연결부분

#include <SoftwareSerial.h>

#include "RTClib.h"

#include <Wire.h>

SoftwareSerial mySerial(14,15);

RTC_DS1307 RTC;

int hh=0,mm=0,ss=0,RXdata=0;

void setup() {

  Serial.begin(9600);

  mySerial.begin(9600);

  Wire.begin();

  RTC.begin();

  RTC.adjust(DateTime(__DATE__, __TIME__));

}

void loop() {

  if(mySerial.available()){

    char r = mySerial.read();

    Serial.write(r);

  }

  DateTime now = RTC.now();

  hh=now.hour();

  mm=now.minute();

  ss=now.second();

  if(!RTC.isrunning()){

    Serial.println("RTC is NOT running!");

  }

  else{

    DateTime now = RTC.now();

    Serial.print(now.year(),DEC);

    Serial.print('/');

    Serial.print(now.month(),DEC);

    Serial.print('/');

    Serial.print(now.day(),DEC);

    Serial.print('/');

    Serial.print(now.hour(),DEC);

    Serial.print('/');

    Serial.print(now.minute(),DEC);

    Serial.print('/');

    Serial.print(now.second(),DEC);

    Serial.print('/');

  }

  delay(1000);

}

수신 부분 (LED시계표시 부분)

//#include <Time.h>

//#include <TimeLib.h>

#include <SoftwareSerial.h>

#include "RTClib.h"

#include <Wire.h>

SoftwareSerial mySerial(14,15);

#define PBS1 16

RTC_DS1307 RTC;

int _sec;

int _min;

int _hour;

int hour;

int minute;

int second;

volatile int col_no;

volatile unsigned int pos;

volatile unsigned long last_time;

volatile unsigned int one_column_time;

volatile bool int_enable = true;

volatile unsigned long duration;

unsigned long last_time_update = 0;

void ISR1() {

  unsigned long tme = micros();

  {

    duration = tme - last_time;

    one_column_time = ((float)duration / (float)col_no);

    pos = 0;

    last_time = tme;

    detachInterrupt(0);

    int_enable = false;

    return;

  }

}

void setup() {

  Serial.begin(9600);

  mySerial.begin(9600);

  Wire.begin();

  RTC.begin();

  RTC.adjust(DateTime(__DATE__, __TIME__));

  DDRD = B11111111;

  DDRB = B001111;

  DateTime now = RTC.now();

  hour = now.hour();

  minute = now.minute();

  second = now.second();

}

void loop() {

  int sri = digitalRead(PBS1);

  if (((micros() - last_time) > 30000) && (int_enable == false))

  {

    int_enable = true;

    attachInterrupt(0, ISR1, LOW);

  }

  unsigned long time_gap = micros() - last_time;

  pos = (float)time_gap / (float)one_column_time;

  pos = min(pos, col_no);

  if ((millis() - last_time_update) > 1000) {

    _hour = hour;

    _min = minute;

    _sec = second;

    if (_hour > 12) _hour -= 12;

    last_time_update = millis();

  }

  col_no = 60;

if (sri == LOW) {

  if (pos == _sec) {

    PORTD = B00000011;

    PORTB = B110000;

  }

  //PORTD = B11111111;

  //PORTB = B110111;

  if (pos == _min) {

    PORTD = B00000111;

    PORTB = B110000;

  }

  //PORTD = B11111111;

  //PORTB = B110111;

  if (pos == _hour * 5 + _min / 12) {

    PORTD = B00001111;

    PORTB = B110000;

  }

  //PORTD = B11111111;

  //PORTB = B110111;

  if ((millis() / 5) % 2 == 0)

  {

    PORTD = B11111101;

    PORTB = B110111;

  }

  else {

    PORTD = B11111111;

    PORTB = B111111;

  }

}

}

처음 제작하는 거라서 모르는 부분이 많네여;;;