[arduino] DS18B20 Digital Sensor 연결 및 wifi 통신 to Web

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python/Lecture

[arduino] DS18B20 Digital Sensor 연결 및 wifi 통신 to Web

jinozpersona 2023. 11. 23. 15:02

Arduino UNO R4 Wifi : DS18B20 연결도

https://arduinogetstarted.com/tutorials/arduino-temperature-sensor

WiFi 공유기

[Arduino IDE 사용] / [Visual Studio Code사용]

Arduino IDE or VS code 초기 셋팅 및 설정 참고

https://jinozblog.tistory.com/207

[arduino] LM35 / TMP36 Sensor 연결도 : arduino IDE or VScode 설정 및 모니터링

Arduino UNO R3 : LM35 Sensor 연결도(TMP36 동일) 및 전달함수식 LM35 Analog Output이므로 A0 ~ A5에 연결 : 필자는 A0에 연결 range : 온도 / 출력(전송)전압, -55ºC ~ 150ºC : -550mV ~ 1500mV LM35 Transfer Function Arduino AO resol

jinozblog.tistory.com

[Code 작성 및 시리얼모니터링]

#include "RTC.h"
#include <OneWire.h>
#include <DallasTemperature.h>

#include <WiFiS3.h>
#include "arduino_secrets.h" 

char ssid[] = SECRET_SSID;
char pass[] = SECRET_PASS;
int keyIndex = 0; // your network key index number (needed only for WEP)

int status = WL_IDLE_STATUS;

WiFiServer server(80);

#define ONE_WIRE_BUS 13
OneWire Wire(ONE_WIRE_BUS);
DallasTemperature sensor(&Wire);

char value[8];
int loopcnt = 0;

void setup() {
  //Initialize serial and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }

  // check for the WiFi module:
  if (WiFi.status() == WL_NO_MODULE) {
    Serial.println("Communication with WiFi module failed!");
    // don't continue
    while (true);
  }

  String fv = WiFi.firmwareVersion();
  if (fv < WIFI_FIRMWARE_LATEST_VERSION) {
    Serial.println("Please upgrade the firmware");
  }

  // attempt to connect to WiFi network:
  while (status != WL_CONNECTED) {
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(ssid);
    // Connect to WPA/WPA2 network. Change this line if using open or WEP network:
    status = WiFi.begin(ssid, pass);

    // wait 10 seconds for connection:
    delay(10000);
  }
  server.begin();
  // you're connected now, so print out the status:
  printWifiStatus();
  RTC.begin();
  RTCTime startTime(27, Month::NOVEMBER, 2023, 10, 00, 00, DayOfWeek::MONDAY, SaveLight::SAVING_TIME_ACTIVE); 
  RTC.setTime(startTime);
}


void loop() {
  RTCTime currentTime;
  // Get the current time from the RTC
  RTC.getTime(currentTime);
  // listen for incoming clients
  WiFiClient client = server.available();
  if (client) {
    Serial.println("new client");
    // an HTTP request ends with a blank line
    boolean currentLineIsBlank = true;
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        Serial.write(c);
        // if you've gotten to the end of the line (received a newline
        // character) and the line is blank, the HTTP request has ended,
        // so you can send a reply
        if (c == '\n' && currentLineIsBlank) {
          // send a standard HTTP response header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println("Connection: close");  // the connection will be closed after completion of the response
          client.println("Refresh: 5");  // refresh the page automatically every 5 sec
          client.println();
          client.println("<!DOCTYPE HTML>");
          client.println("<html>");
          
          sensor.requestTemperatures();
          dtostrf(sensor.getTempCByIndex(0) , 5, 2, value);
          Serial.println(value);
          
          // output Date Time & value
          // Print the date (DD/MM/YYYY)
          client.print(currentTime.getDayOfMonth());
          client.print("/");
          client.print(Month2int(currentTime.getMonth()));
          client.print("/");
          client.print(currentTime.getYear());
          client.print(" - ");
          // Print the time (HH:MM:SS)
          client.print(currentTime.getHour());
          client.print(":");
          client.print(currentTime.getMinutes());
          client.print(":");
          client.println(currentTime.getSeconds());
          client.println("<br />");
          client.print(value);
          client.println("<br />");
          client.println("</html>");
          break;
        }
        if (c == '\n') {
          // you're starting a new line
          currentLineIsBlank = true;
        } else if (c != '\r') {
          // you've gotten a character on the current line
          currentLineIsBlank = false;
        }
      }
    }
    // give the web browser time to receive the data
    delay(1);

    // close the connection:
    client.stop();
    Serial.println("client disconnected");
  }
}


void printWifiStatus() {
  // print the SSID of the network you're attached to:
  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());

  // print your board's IP address:
  IPAddress ip = WiFi.localIP();
  Serial.print("IP Address: ");
  Serial.println(ip);

  // print the received signal strength:
  long rssi = WiFi.RSSI();
  Serial.print("signal strength (RSSI):");
  Serial.print(rssi);
  Serial.println(" dBm");
}

wifi SSID, PASS header file(동일 폴더에 두고 업로드)

arduino_secrets.h

//arduino_secrets.h header file
#define SECRET_SSID "TP-LINK_C71232"
#define SECRET_PASS "YourWIFI_PASS"

Serial Monitor

browser : 172.30.1.160

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