2024年11月22日 星期五

WOKWI DHT22 & LED , Node-Red + SQLite database

 WOKWI DHT22 & LED , Node-Red + SQLite database















Node-Red程式

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\"test.mosquitto.org\";","x":410,"y":20,"wires":[]},{"id":"af50936ec9348b60","type":"ui_text","z":"d90cd4f43857dd3e","group":"3a18026dc181f483","order":2,"width":10,"height":1,"name":"","label":"訂閱MQTT的資料 : ","format":"{{msg.payload}}","layout":"row-left","className":"","x":630,"y":1240,"wires":[]},{"id":"f24f827457cd66df","type":"function","z":"d90cd4f43857dd3e","name":"function 103","func":"msg.payload = msg.payload.split(\",\");\nreturn msg;\n","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":270,"y":1280,"wires":[["4aef162671169373","60705eadddf942b3","5c6e40bdc2ead748","f13742343cdf0af6","daf0202ce55f5c9b"]]},{"id":"f2096640664014f4","type":"debug","z":"d90cd4f43857dd3e","name":"debug 327","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":630,"y":1280,"wires":[]},{"id":"4aef162671169373","type":"function","z":"d90cd4f43857dd3e","name":"function 104","func":"msg.payload=msg.payload[0];\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":430,"y":1280,"wires":[["f2096640664014f4"]]},{"id":"60705eadddf942b3","type":"function","z":"d90cd4f43857dd3e","name":"function 105","func":"msg.payload=msg.payload[1];\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":430,"y":1340,"wires":[["18a2cab9108622e9"]]},{"id":"18a2cab9108622e9","type":"debug","z":"d90cd4f43857dd3e","name":"debug 328","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":630,"y":1340,"wires":[]},{"id":"5c6e40bdc2ead748","type":"debug","z":"d90cd4f43857dd3e","name":"debug 329","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":430,"y":1160,"wires":[]},{"id":"daf0202ce55f5c9b","type":"function","z":"d90cd4f43857dd3e","name":"INSERT","func":"var temp=msg.payload[0];\nvar humi=msg.payload[1];\n\nvar Today = new Date();\nvar yyyy = Today.getFullYear(); //年\nvar MM = Today.getMonth()+1;    //月\nvar dd = Today.getDate();       //日\nvar h = Today.getHours();       //時\nvar m = Today.getMinutes();     //分\nvar s = Today.getSeconds();     //秒\nif(MM<10)\n{\n   MM = '0'+MM;\n}\n\nif(dd<10)\n{\n   dd = '0'+dd;\n}\n\nif(h<10)\n{\n   h = '0'+h;\n}\n\nif(m<10)\n{\n  m = '0' + m;\n}\n\nif(s<10)\n{\n  s = '0' + s;\n}\nvar var_date = yyyy+'/'+MM+'/'+dd;\nvar var_time = h+':'+m+':'+s;\n\n\nmsg.topic = \"INSERT INTO DHT22STATUS ( Temp, Humi , Date , Time ) VALUES ($temp, $humi, $var_date ,  $var_time ) \" ;\nmsg.payload = [temp, humi, var_date , var_time ]\nreturn msg;\n\n\n//CREATE TABLE DHT22STATUS (\n//id INTEGER,\n//Temp TEXT,\n//Humi TEXT,\n//Date DATE,\n//Time TIME,\n//PRIMARY KEY (id)\n//);\n","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":420,"y":1060,"wires":[["cf0ec0632468bc8d"]]},{"id":"cf0ec0632468bc8d","type":"sqlite","z":"d90cd4f43857dd3e","mydb":"4e71ffcc.32ba8","sqlquery":"msg.topic","sql":"","name":"DHT22_STATUS","x":610,"y":1060,"wires":[["5ca84b1ded133e95"]]},{"id":"5ca84b1ded133e95","type":"link out","z":"d90cd4f43857dd3e","name":"link out 63","mode":"link","links":["6032fd42e42809e1"],"x":735,"y":1060,"wires":[]},{"id":"6032fd42e42809e1","type":"link in","z":"d90cd4f43857dd3e","name":"link in 61","links":["5ca84b1ded133e95"],"x":265,"y":460,"wires":[["93dc37739f4c49ca"]]},{"id":"4e71ffcc.32ba8","type":"sqlitedb","db":"C:\\Users\\User\\.node-red\\202409_DHT22.db","mode":"RWC"},{"id":"92ed45c1ead25706","type":"ui_group","name":"DHT22 資料庫命令區","tab":"62b7557c711185f0","order":3,"disp":true,"width":"6","collapse":false,"className":""},{"id":"a4d2ace4206ad2ca","type":"ui_group","name":"LED控制","tab":"62b7557c711185f0","order":1,"disp":true,"width":6,"collapse":false,"className":""},{"id":"3a18026dc181f483","type":"ui_group","name":"DHT22 資料庫顯示區","tab":"62b7557c711185f0","order":2,"disp":true,"width":10,"collapse":false,"className":""},{"id":"11d8514.a44dcaf","type":"ui_group","name":"控制","tab":"8f1ada5fa4df30e2","order":2,"disp":true,"width":"6","collapse":false,"className":""},{"id":"584db2f88f8050c2","type":"mqtt-broker","name":"broker.mqttgo.io","broker":"broker.mqttgo.io","port":"1883","clientid":"","autoConnect":true,"usetls":false,"protocolVersion":"4","keepalive":"60","cleansession":true,"birthTopic":"","birthQos":"0","birthPayload":"","birthMsg":{},"closeTopic":"","closeQos":"0","closePayload":"","closeMsg":{},"willTopic":"","willQos":"0","willPayload":"","willMsg":{},"userProps":"","sessionExpiry":""},{"id":"62b7557c711185f0","type":"ui_tab","name":"WOKWI SQLite DHT22 LED","icon":"dashboard","order":136,"disabled":false,"hidden":false},{"id":"8f1ada5fa4df30e2","type":"ui_tab","name":"作業2-1","icon":"dashboard","disabled":false,"hidden":false}]


WOKWI程式


#include <WiFi.h>
#include <PubSubClient.h>
#include <LiquidCrystal_I2C.h>
#include "DHTesp.h"

const int DHT_PIN = 15;
const int LED = 2;

DHTesp dhtSensor;

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

// Update these with values suitable for your network.
const char* ssid =  "Wokwi-GUEST";   // your network SSID (name)
const char* password = "";   // your network password
//const char* mqtt_server = "broker.mqttdashboard.com";// choose your mqtt server
const char* mqtt_server = "broker.mqttgo.io";
//const char* mqtt_server = "test.mosquitto.org";

const char Pubtopic1[]  = "alex9ufo/wokwi/dht22";
//const char Pubtopic2[]  = "alex9ufo/hum";
const char Subtopic1[]  = "alex9ufo/wokwi/led";

WiFiClient espClient;
PubSubClient client(espClient);

long lastMsg = 0;
char msg[50];
int value = 0;

int Count= 0;
bool Flash = false;  //true
bool Timer = false;  //true

//=========================================================
void callback(char* topic, byte* payload, unsigned int length)
{
  Serial.print("Command from MQTT broker is : [");
  Serial.print(topic);
  Serial.print("]");
  Serial.println();
  Serial.print(" publish data is:");
  lcd.clear();
  String message="";
  {
    for(int i=0;i<length;i++)
    {
      Serial.print((char)payload[i]);  
      message +=(char)payload[i];

      lcd.setCursor(0, 0);
      lcd.print("alex9ufo LCD"); // Start Print text to Line 1
      lcd.setCursor(i, 1);
      lcd.write((char)payload[i]);
    }
  }
 
  Serial.println();
  //Serial.println(message);
  message.trim();

  if (String(topic)=="alex9ufo/wokwi/led") {
    if (message == "on") {
      digitalWrite(LED, LOW);  // Turn on the LED
      Serial.print("LED = on ");
    }

    if (message == "off" ) {
      digitalWrite(LED, HIGH); // Turn off the LED
      Serial.print("LED = off ");
    }

    if (message == "flash" ) {
      digitalWrite(LED, HIGH); // Turn off the LED
      Flash = true;
      Timer = false;
      Serial.print("LED = flash");
    }

    if (message == "timer" ) {
      digitalWrite(LED, LOW); // Turn off the LED
      Flash = false;
      Timer = true;
      Count= 11;
      Serial.print("LED = timer");
    }

  }
  Serial.println();
} //end callback
//=========================================================
void reconnect() {
  // Loop until we're reconnected
  while (!client.connected())
  {
    Serial.print("Attempting MQTT connection...");
    // Create a random client ID
    String clientId = "ESP32Client-";
    clientId += String(random(0xffff), HEX);
    // Attempt to connect
    //if you MQTT broker has clientID,username and password
    //please change following line to    if (client.connect(clientId,userName,passWord))
    if (client.connect(clientId.c_str()))
    {
      Serial.println("connected");
      //once connected to MQTT broker, subscribe command if any
      //client.subscribe("alex9ufo/Command");
      client.subscribe(Subtopic1);

    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // Wait 6 seconds before retrying
      delay(6000);
    }
  }
} //end reconnect()


//===========================================================
//判斷 旗號Flash , Timer 是否為真
void LED_Message() {
  //判斷 旗號 Flash / timer  是否為真 ? 閃爍 定時
  if (Flash){
    digitalWrite(LED, !digitalRead(LED));
    delay(500);
  } //(Flash)

  if (Timer) {
    digitalWrite(LED, LOW);
    delay(500);
    Count=Count-1;
    if (Count == 0 ){
      Timer=false;
      digitalWrite(LED, HIGH);
     }
  } //(Timer)
}
//=========================================================
void setup_wifi() {
   delay(100);
  // We start by connecting to a WiFi network
    Serial.print("Connecting to ");
    Serial.println(ssid);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED)
    {
      delay(500);
      Serial.print(".");
    }
  randomSeed(micros());
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}
//=========================================================


void setup() {
  Serial.begin(115200);
 
  pinMode(LED, OUTPUT);     // Initialize the BUILTIN_LED pin as an output
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  setup_wifi();
  client.setServer(mqtt_server, 1883);
 
  // Init
  lcd.init();
  lcd.backlight();

  // Print something
  lcd.setCursor(3, 0);
  lcd.print("Welcome to");
  lcd.setCursor(2, 1);
  lcd.print("lcd display");
  lcd.setCursor(5, 2);
  lcd.print("Simulator");
  lcd.setCursor(7, 3);
  lcd.print("Enjoy!");
}


void loop() {
    if (!client.connected()) {
    reconnect();
  }
  client.setCallback(callback);
  client.loop();

  LED_Message();

  unsigned long now = millis();
  if (now - lastMsg > 25000) {
    lastMsg = now;
    TempAndHumidity  data = dhtSensor.getTempAndHumidity();

    String temp = String(data.temperature, 2);
    Serial.print("Temperature: ");
    Serial.println(temp);
 
   
    String hum = String(data.humidity, 1);
    Serial.print("Humidity: ");
    Serial.println(hum);
    //client.publish("alex9ufo/temp", temp.c_str());
    //client.publish("alex9ufo/hum", hum.c_str());
    String TempHumi=temp + ','+ hum ;
    Serial.println(TempHumi);
    client.publish("alex9ufo/wokwi/dht22", TempHumi.c_str() );
  }
}



Diagram.json 線路json檔案

{
  "version": 1,
  "author": "4JN20EC077 - Supriya M",
  "editor": "wokwi",
  "parts": [
    { "type": "wokwi-esp32-devkit-v1", "id": "esp", "top": -350.5, "left": 43, "attrs": {} },
    {
      "type": "wokwi-lcd1602",
      "id": "lcd1",
      "top": -339.2,
      "left": 293.6,
      "attrs": { "pins": "i2c" }
    },
    {
      "type": "wokwi-dht22",
      "id": "dht1",
      "top": -316.5,
      "left": -53.4,
      "attrs": { "humidity": "64", "temperature": "32.4" }
    },
    {
      "type": "wokwi-led",
      "id": "led1",
      "top": -493.2,
      "left": 195.8,
      "attrs": { "color": "red" }
    },
    {
      "type": "wokwi-resistor",
      "id": "r1",
      "top": -417.6,
      "left": 191.45,
      "rotate": 90,
      "attrs": { "value": "1000" }
    }
  ],
  "connections": [
    [ "esp:TX0", "$serialMonitor:RX", "", [] ],
    [ "esp:RX0", "$serialMonitor:TX", "", [] ],
    [ "lcd1:SDA", "esp:D21", "cyan", [ "h0" ] ],
    [ "lcd1:VCC", "esp:3V3", "red", [ "h-15.76", "v116.31" ] ],
    [ "lcd1:GND", "esp:GND.1", "black", [ "h-25.36", "v106.61" ] ],
    [ "esp:D22", "lcd1:SCL", "magenta", [ "h28.5", "v-0.3" ] ],
    [ "esp:3V3", "dht1:VCC", "red", [ "h57.3", "v86.4", "h-278.4" ] ],
    [ "esp:GND.1", "dht1:GND", "black", [ "h28.5", "v67.1", "h-9.6" ] ],
    [ "dht1:SDA", "esp:D15", "blue", [ "v86.4", "h259.3", "v-96", "h-9.6" ] ],
    [ "led1:A", "r1:1", "green", [ "v0" ] ],
    [ "esp:3V3", "r1:2", "red", [ "v0", "h38.1", "v-211.2" ] ],
    [ "esp:D2", "led1:C", "violet", [ "h18.9", "v-231.1" ] ]
  ],
  "dependencies": {}
}


Libaaries.txt檔案

# Wokwi Library List # See https://docs.wokwi.com/guides/libraries # Automatically added based on includes: PubSubClient LiquidCrystal I2C DHT sensor library for ESPx

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