0714_먼지센서에서 측정한 값을 Thingspeach에서 그래프로 확인.

오시는 대로 이거 설치해 주세요~

• http://www.electrodragon.com/w/File:Sscom32E.zip

https://github.com/ekyuho/sensors/blob/master/esp_ess011_swserial

Software Serial Library

http://www.instructables.com/id/ESP8266-Two-Serial-Ports-With-SoftwareSerial-Libra/

SDS011 먼지센서 구동 프로그램

https://github.com/ekyuho/sensors/blob/master/sds011_test.ino

Small Talk

https://1drv.ms/p/s!AtwGHpDGDtFayxQRI7vvEoY8WbLp

동기유발에 대한 TED Video

https://www.youtube.com/watch?v=rrkrvAUbU9Y

http://gdip.seoul.kr

http://www.tinkercad.com/

https://github.com/ekyuho/nodeMCU/blob/master/sds011_thingspeak.ino

<먼지센서에서 측정한 값을 Thingspeach에서 그래프로 확인 가능>

--소스코드

#include <SoftwareSerial.h>

#include <ESP8266WiFi.h>

#include <WiFiClientSecure.h>

SoftwareSerial swSer(D4, 12, false, 256);

const char* host = "api.thingspeak.com";

String url = "/update?api_key=IQ6CHNZA7GFJ06YX";   // Your Own Key here

const int httpPort = 80;

const char* ssid = "kipfa-class1_2.4G";            

const char* password = "classroom1";

String working(int pm25, int pm10) { 

  return(String("field1=")+String(pm25) +"&field2="+String(pm10));

}

void delivering(String payload) { 

  WiFiClient client;

  Serial.print("connecting to ");

  Serial.println(host);

  if (!client.connect(host, httpPort)) {

    Serial.print("connection failed: ");

    Serial.println(payload);

    return;

  }

  String getheader = "GET "+ String(url) +"&"+ String(payload) +" HTTP/1.1";

  client.println(getheader);

  client.println("User-Agent: ESP8266 Kyuho Kim");  

  client.println("Host: " + String(host));  

  client.println("Connection: close");  

  client.println();

  Serial.println(getheader);

  while (client.connected()) {

    String line = client.readStringUntil('\n');

    Serial.println(line);

  }

  Serial.println("Done cycle.");

}

void connect_ap() {

  Serial.println();

  Serial.print("connecting to ");

  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {

    delay(500);

    Serial.print(".");

  }

  Serial.print("\n Got WiFi, IP address: ");

  Serial.println(WiFi.localIP());  

}

void setup() {

  Serial.begin(115200);

  swSer.begin(9600);

  connect_ap();

  Serial.println("\nSoftware serial test started");

}

int stat = 1;

int cnt = 0;

char buf[10];

int readytosend = 0;

void loop() {

  while (swSer.available() > 0) {

    char c;

    c = swSer.read();

    //Serial.print("stat="+ String(stat) +", "+ "cnt="+ String(cnt) +" ");

    //Serial.print(c, HEX);

    //Serial.println(" ");

    switch (stat) {

      case 1:

         if (c == 0xAA) stat = 2;

           break;

       case 2:

         if (c == 0xC0) stat =3;

         else stat = 1;

         break;

       case 3:

         buf[cnt++] = c;

         if (cnt == 7) stat = 4;

         break;

       case 4:

         if (c == 0xAB) {

          //check checusum

          stat = 1;

         }

         else {

          Serial.println("Eh? wrong tailer");

         }

         cnt = 0;

         int pm25 = buf[0] + 256*buf[1];

         int pm10 = buf[2] + 256*buf[3];

         Serial.print(String(pm25) +","+ String(pm10)+ "  ");

         

         if (readytosend++ > 15) {

            delivering(working(pm25, pm10));

            readytosend = 0;

         }

       

        break;

    }

  }

}