#7 원격으로 선풍기 제어하기

기본구조

아두이노(esp-01 와이파이모듈(Server)-------공유기(AP)-------Spring(Client)

1.아두이노 코드 - AT Command를 이용하여 서버로 사용했다.

또한 릴레이 모듈을 이용하였음

#include <SoftwareSerial.h>
#define DEBUG true
 
SoftwareSerial esp8266(2, 3); // make RX Arduino line is pin 2, make TX Arduino line is pin 3.
// This means that you need to connect the TX line from the esp to the Arduino's pin 2
// and the RX line from the esp to the Arduino's pin 3
 
int Relaypin = 5;
 
void setup() {
  pinMode(Relaypin, OUTPUT);
  Serial.begin(9600);
  esp8266.begin(9600); // your esp's baud rate might be different
 
  sendData("AT+RST\r\n", 2000, DEBUG); // reset module
  sendData("AT+CIOBAUD?\r\n", 2000, DEBUG); // check baudrate (redundant)
  sendData("AT+CWMODE=3\r\n", 1000, DEBUG); // configure as access point (working mode: AP+STA)
  sendData("AT+CWLAP\r\n", 3000, DEBUG); // list available access points
 
  sendData("AT+CWJAP=\"iptime\",\"a12345678\"\r\n", 6000, DEBUG); // join the access point
  sendData("AT+CIFSR\r\n", 1000, DEBUG); // get ip address
  sendData("AT+CIPMUX=1\r\n", 1000, DEBUG); // configure for multiple connections
  sendData("AT+CIPSERVER=1,7777\r\n", 1000, DEBUG); // turn on server on port 80
}
 
void loop() {
  Serial.print(".");
  if (esp8266.available()) { // check if the esp is sending a message
    Serial.println("Available()");
    if (esp8266.find("+IPD,")) {
      delay(1000); // wait for the serial buffer to fill up (read all the serial data)
      // get the connection id so that we can then disconnect
      int connectionId = esp8266.read() - 48; // subtract 48 because the read() function returns
      // the ASCII decimal value and 0 (the first decimal number) starts at 48
      esp8266.find("pin="); // advance cursor to "pin="
      int pinNumber = (esp8266.read() - 48) * 10; // get first number i.e. if the pin 13 then the 1st number is 1, then multiply to get 10
      pinNumber += (esp8266.read() - 48); // get second number, i.e. if the pin number is 13 then the 2nd number is 3, then add to the first number
 
      if (pinNumber == 11) {
        digitalWrite(Relaypin, HIGH);
        Serial.println("Relay ON");
      }
      if(pinNumber == 12) {
        digitalWrite(Relaypin, LOW);
        Serial.println("Relay OFF");
      }
 
      // make close command
      String closeCommand = "AT+CIPCLOSE=";
      closeCommand += connectionId; // append connection id
      closeCommand += "\r\n";
      sendData(closeCommand, 1000, DEBUG); // close connection
    }
  }
  delay(1000);
}
 
/*
  Name: sendData
  Description: Function used to send data to ESP8266.
  Params: command - the data/command to send; timeout - the time to wait for a response; debug - print to Serial window?(true = yes, false = no)
  Returns: The response from the esp8266 (if there is a reponse)
*/
String sendData(String command, const int timeout, boolean debug) {
  String response = "";
  esp8266.print(command); // send the read character to the esp8266
  long int time = millis();
 
  while ( (time + timeout) > millis()) {
    while (esp8266.available()) {
      // The esp has data so display its output to the serial window
      char c = esp8266.read(); // read the next character.
      response += c;
    }
  }
 
  if (debug) {
    Serial.print(response);
  }
  return response;
}

Spring 코드 - ajax를 이용하여 http통신을 했다.

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@include file="../include/header.jsp" %>
<link rel="stylesheet" type="text/css" href="/resources/css/manage/remoteMain.css" />
    
    <div class="container2">
    
    <c:forEach var="myiot" items="${myIot}">
        <figure>
            <div class="switch">
            
            <%-- 보일러 사진 --%>
            <c:if test="${myiot.model_name eq 'boiler' }">
                <img class="window" src="resources/images/boiler.png" /><br/>
            </c:if>
            
            <%-- 창문 사진 --%>
            <c:if test="${myiot.model_name eq 'window' }">
                <img class="window" src="resources/images/window.png" /><br/>
            </c:if>
            
            <%-- 환풍기 사진 --%>
            <c:if test="${myiot.model_name eq 'ventilator' }">
                <img class="window" src="resources/images/Ventilator.jpg" /><br/>
            </c:if>
            
            <%-- 공기청정기 사진 --%>
            <c:if test="${myiot.model_name eq 'aircleaner' }">
                <img class="window" src="resources/images/airclean.jpg" /><br/>
            </c:if>
            
            <div class="nickName">
                <b>${myiot.iot_id }</b>
            </div>
            
            <div class="local">
                    ${myiot.model_name } 원격제어 <br/> 위치: ${myiot.place_name}
            </div>
            
            <div class="on_off">
                <label class="rocker rocker-small">
                    <input type="checkbox" class="onOff" value="check">
                    <span id="11" class="switch-left choice">ON</span>
                    <span id="12" class="switch-right choice">OFF</span>
                </label>
      
                <label class="rocker rocker-small">
                    <input type="checkbox" class="autoManual">
                    <span class="switch-auto choice">자동</span>
                    <span class="switch-manual choice">수동</span>
                </label>
            </div>
            </div>
        </figure>
    </c:forEach>
            
        <button id="btn-reg">IoT 제품 제어 등록</button>
    </div>
    <script type="text/javascript">
        $(document).ready(function() {
            $(".choice").click(function() {
                var p = $(this).attr('id'); // get id value (i.e. pin13, pin12, or pin11)
                if($(this).attr('id') == 11){
                    alert("ON");
                }else if($(this).attr('id') == 12){
                    alert("OFF");
                }
                
                // send HTTP GET request to the IP address with the parameter "pin" and value "p", then execute the function
                $.get("http://39.127.7.97:7777/", {pin : p}); // execute get request (아두이노 웹서버 IP 주소로 고쳐 준다)
            });
        });
    </script>
    <script src='resources/js/manage/remoteMain.js'></script>
<%@include file="../include/footer.jsp" %>

실행 결과 - ON 버튼 클릭하면 미리 비치 된 선풍기가 켜지고 OFF 버튼 클릭하면 선풍기가 꺼지는 것을 알 수 있습니다~