아두이노 ESP32로 온습도 데이터 수집하기

ESP32, DHT-22, 전선 3개

CH340G，CH340T，CH340C，CH340N, CH340K, CH340E，CH340B，CH341A，CH341F, CH341T，CH341B，CH341C，CH341U

https://espressif.github.io/arduino-esp32/package_esp32_index.json

void setup() {
 
 USE_SERIAL.begin(115200);
 
 USE_SERIAL.println();
 USE_SERIAL.println();
 USE_SERIAL.println();
 
 for (uint8_t t = 4; t > 0; t--) {
 USE_SERIAL.printf("[SETUP] WAIT %d...\n", t);
 USE_SERIAL.flush();
 delay(1000);
 }
// 아래의 SSID에 와이파이 이름, PASSWORD에 비밀번호 입력
 wifiMulti.addAP("SSID", "PASSWORD");
}

#include "DHT.h"
 
#define DHTPIN 4 // 핀번호 지정
#define DHTTYPE DHT22 // DHT 22 
DHT dht(DHTPIN, DHTTYPE);
 
void setup() {
 Serial.begin(115200); // 시리얼 통신 속도. 115200으로 변경
 Serial.println(F("DHTxx test!"));
 dht.begin();
}
 
void loop() {
 delay(2000);
 float h = dht.readHumidity();
 float t = dht.readTemperature();
 float f = dht.readTemperature(true); // true 넣으면 화씨 됨
 
 if (isnan(h) || isnan(t) || isnan(f)) {
 Serial.println(F("Failed to read from DHT sensor!"));
 return;
 }
 
 float hif = dht.computeHeatIndex(f, h); // 이건 체감온도
 float hic = dht.computeHeatIndex(t, h, false);
 
 Serial.print(F("Humidity: "));
 Serial.print(h);
 Serial.print(F("% Temperature: "));
 Serial.print(t);
 Serial.print(F("°C "));
 Serial.print(f);
 Serial.print(F("°F Heat index: "));
 Serial.print(hic);
 Serial.print(F("°C "));
 Serial.print(hif);
 Serial.println(F("°F"));
}
 

#include <Arduino.h>
#include <WiFi.h>
#include <WiFiMulti.h>
#include <HTTPClient.h>
#include <NetworkClientSecure.h>
 
...
 
String host = "https://script.google.com/";
String googleScriptID = "나의 구글 스크립트 아이디";
String scriptUrl = "macros/s/"+googleScriptID+"/exec";
String queryString = "?value1='안녕'&value2='테스트중!'";
String getReqUrl = host + scriptUrl + queryString;
 
void setup() {
 
 ...
 
 WiFiMulti.addAP("와이파이 이름", "와이파이 비밀번호");
 
 ...
}
 
void loop() {
 NetworkClientSecure *client = new NetworkClientSecure;
 if (client) {
 client->setCACert(rootCACertificate);
 {
 HTTPClient https;
 Serial.print("[HTTPS] begin...\n");
 if (https.begin(*client, getReqUrl)) { // <--- 이부분만 수정하면 됨
 
 ...
 
 }
 }}
}

#include "DHT.h"
 
#define DHTPIN 4   
#define DHTTYPE DHT22   
 
DHT dht(DHTPIN, DHTTYPE);
 
void setup() {
  Serial.begin(115200);
  dht.begin();
}
 
struct WeatherData {
  float humi;
  float temp;
  float heat;
  bool valid;
};
 
WeatherData getWeather() {
  WeatherData data;
  data.humi = dht.readHumidity();
  data.temp = dht.readTemperature();
 
  if (isnan(data.humi) || isnan(data.temp)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    data.valid = false;
    return data;
  }
  data.valid = true;
  data.heat = dht.computeHeatIndex(data.temp, data.humi, false);
 
  Serial.print(F("Humidity: "));
  Serial.print(data.humi);
  Serial.print(F("%  Temperature: "));
  Serial.print(data.temp);
  Serial.print(F("°C "));
  Serial.print(F("°Heat index: "));
  Serial.print(data.heat);
  Serial.print(F("°C "));
  return data;
}

#include <Arduino.h>
#include <WiFi.h>
#include <WiFiMulti.h>
#include <HTTPClient.h>
#include <NetworkClientSecure.h>
#include "DHT.h"
 
...
인증서 생략
...
 
void setClock() {
  ...
}
 
#define DHTPIN 4   
#define DHTTYPE DHT22   
 
WiFiMulti WiFiMulti;
DHT dht(DHTPIN, DHTTYPE);
char* SSID = "와이파이 이름";
char* PASSWORD = "와이파이 비번";
String host = "https://script.google.com/";
String googleScriptID = "나의 구글 스크립트 아이디";
String scriptUrl = "macros/s/"+googleScriptID+"/exec";
 
struct WeatherData {
  ...
};
 
WeatherData getWeather(); //오류 발생으로 미리 선언해 줌
 
 
void setup() {
  dht.begin();
  Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  WiFiMulti.addAP(SSID, PASSWORD);
  Serial.print(F("Waiting for WiFi to connect..."));
  while ((WiFiMulti.run() != WL_CONNECTED)) {
    Serial.print(F("."));
  }
  Serial.println(F(" connected"));
  setClock();
}
 
WeatherData getWeather() {
    ...
}
 
 
void loop() {
  NetworkClientSecure *client = new NetworkClientSecure;
  if (client) {
    client->setCACert(rootCACertificate);
    {
      HTTPClient https;
      WeatherData data = getWeather();
      if (!data.valid){
        Serial.println(F("날씨 정보를 얻을 수 없습니다."));
        Serial.println("Waiting 10s before the next round...");
        delay(10000);
        return;
      };
      Serial.print("[HTTPS] begin...\n");
      String queryString = "?value1=" + String(data.humi) + "&value2=" + String(data.temp) ;
      String getReqUrl = host + scriptUrl + queryString;
      if (https.begin(*client, getReqUrl)) {  // HTTPS
        Serial.print("[HTTPS] GET...\n");
 
        int httpCode = https.GET();
 
        if (httpCode > 0) {
          Serial.printf("[HTTPS] GET... code: %d\n", httpCode);
        } else {
          Serial.printf("[HTTPS] GET... failed, error: %s\n", https.errorToString(httpCode).c_str());
        }
        https.end();
      } else {
        Serial.printf("[HTTPS] Unable to connect\n");
      }
    }
    delete client;
  } else {
    Serial.println("Unable to create client");
  }
  Serial.println();
  Serial.println("Waiting 10s before the next round...");
  delay(10000);
}

...
for (var param in e.parameter) {
  Logger.log('In for loop, param=' + param);
  var value = stripQuotes(e.parameter[param]);
  Logger.log(param + ':' + e.parameter[param]);
  switch (param) {
    case 'humi':
    rowData[2] = value; // value1 in column C
    result = '습도 기록됨'; 
    break;
    case 'temp':
    rowData[3] = value; // Humidity in column D
    result += ', 온도 기록됨'; 
    break;
    case 'heat':
    rowData[4] = value;
    result += ", 체감 온도 기록됨";
    break
 
    default:
    result = "지원되지 않는 파라미터 입니다.";
  }
...