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Author: nockanda

finding-address.ino

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+//아래에 있는 내용은 당연히 있어야한느 것이다!
+#include <OneWire.h>
+#include <DallasTemperature.h>
+#define ONE_WIRE_BUS 2 //몇번핀에 연결했냐
+#define TEMPERATURE_PRECISION 12
+OneWire oneWire(ONE_WIRE_BUS);
+DallasTemperature sensors(&oneWire);
+
+DeviceAddress myaddress;
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(9600);
+  sensors.begin(); //있어야한느거
+
+  //발견한 총 디바이스의 갯수 지금은 1
+  Serial.print("Found ");
+  Serial.print(sensors.getDeviceCount(), DEC);
+  Serial.println(" devices.");
+
+  //단 1개의 온도센서가 연결되었을때 주소값을 확인하겠다!
+  if(sensors.getDeviceCount() == 1){
+    //발견한 주소를 대입한다!
+    sensors.getAddress(myaddress, 0);  
+    //주소를 출력한다!
+    printAddress(myaddress);
+  }else{
+    Serial.println("연결되어있지 않거나 2개이상의 센서가 연결되었다!");
+  }
+  
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+
+}
+
+void printAddress(DeviceAddress deviceAddress)
+{
+  for (uint8_t i = 0; i < 8; i++)
+  {
+    // zero pad the address if necessary
+    if (deviceAddress[i] < 16) Serial.print("0");
+    Serial.print(deviceAddress[i], HEX);
+    Serial.print(",");
+  }
+}

multiple-ds18b20-mqtt.ino

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+#include <ESP8266WiFi.h>
+#include <PubSubClient.h>
+
+//아래에 있는 내용은 당연히 있어야한느 것이다!
+#include <OneWire.h>
+#include <DallasTemperature.h>
+#define ONE_WIRE_BUS D3 //몇번핀에 연결했냐
+#define TEMPERATURE_PRECISION 12
+OneWire oneWire(ONE_WIRE_BUS);
+DallasTemperature sensors(&oneWire);
+
+DeviceAddress myaddress1,myaddress2,myaddress3;
+DeviceAddress mysensors[]={
+  {0x28,0x92,0x4B,0x79,0xA2,0x00,0x03,0x38},
+  {0x28,0xA9,0x4B,0x95,0xF0,0x01,0x3C,0x79},
+  {0x28,0xE2,0xEA,0x95,0xF0,0x01,0x3C,0x0A}
+};
+//mysensors[0]
+//mysensors[1]
+//mysensors[2]
+
+float mytemp[3] = {0,0,0};
+
+// Update these with values suitable for your network.
+
+const char* ssid = "nockanda";
+const char* password = "11213144";
+const char* mqtt_server = "broker.mqtt-dashboard.com";
+
+WiFiClient espClient;
+PubSubClient client(espClient);
+unsigned long lastMsg = 0;
+#define MSG_BUFFER_SIZE  (50)
+char msg[MSG_BUFFER_SIZE];
+int value = 0;
+
+void setup_wifi() {
+
+  delay(10);
+  // We start by connecting to a WiFi network
+  Serial.println();
+  Serial.print("Connecting to ");
+  Serial.println(ssid);
+
+  WiFi.mode(WIFI_STA);
+  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 callback(char* topic, byte* payload, unsigned int length) {
+  Serial.print("Message arrived [");
+  Serial.print(topic);
+  Serial.print("] ");
+  for (int i = 0; i < length; i++) {
+    Serial.print((char)payload[i]);
+  }
+  Serial.println();
+
+  // Switch on the LED if an 1 was received as first character
+  if ((char)payload[0] == '1') {
+    digitalWrite(BUILTIN_LED, LOW);   // Turn the LED on (Note that LOW is the voltage level
+    // but actually the LED is on; this is because
+    // it is active low on the ESP-01)
+  } else {
+    digitalWrite(BUILTIN_LED, HIGH);  // Turn the LED off by making the voltage HIGH
+  }
+
+}
+
+void reconnect() {
+  // Loop until we're reconnected
+  while (!client.connected()) {
+    Serial.print("Attempting MQTT connection...");
+    // Create a random client ID
+    String clientId = "ESP8266Client-";
+    clientId += String(random(0xffff), HEX);
+    // Attempt to connect
+    if (client.connect(clientId.c_str())) {
+      Serial.println("connected");
+      // Once connected, publish an announcement...
+      //client.publish("outTopic", "hello world");
+      // ... and resubscribe
+      //client.subscribe("inTopic");
+    } else {
+      Serial.print("failed, rc=");
+      Serial.print(client.state());
+      Serial.println(" try again in 5 seconds");
+      // Wait 5 seconds before retrying
+      delay(5000);
+    }
+  }
+}
+
+void setup() {
+  pinMode(BUILTIN_LED, OUTPUT);     // Initialize the BUILTIN_LED pin as an output
+  Serial.begin(115200);
+  sensors.begin(); //있어야한느거
+  if(sensors.getDeviceCount() == 3){
+    //발견한 주소를 대입한다!
+    sensors.getAddress(myaddress1, 0);  
+    sensors.getAddress(myaddress2, 1);  
+    sensors.getAddress(myaddress3, 2);
+
+    sensors.setResolution(myaddress1, TEMPERATURE_PRECISION);
+    sensors.setResolution(myaddress2, TEMPERATURE_PRECISION);
+    sensors.setResolution(myaddress3, TEMPERATURE_PRECISION);
+  }else{
+    //Serial.println("연결되어있지 않거나 2개이상의 센서가 연결되었다!");
+  }
+  setup_wifi();
+  client.setServer(mqtt_server, 1883);
+  client.setCallback(callback);
+}
+
+void loop() {
+
+  if (!client.connected()) {
+    reconnect();
+  }
+  client.loop();
+
+  sensors.requestTemperatures();
+  //Serial.println("DONE");
+
+  printTemperature(myaddress1);
+  printTemperature(myaddress2);
+  printTemperature(myaddress3);
+
+  String myjson = "{\"temp1\":"+String(mytemp[0])+",\"temp2\":"+String(mytemp[1])+",\"temp3\":"+String(mytemp[2])+"}";
+
+  client.publish("nockanda/sensors", myjson.c_str());
+}
+
+void printTemperature(DeviceAddress deviceAddress)
+{
+  float tempC = sensors.getTempC(deviceAddress);
+  if(tempC == DEVICE_DISCONNECTED_C) 
+  {
+    Serial.println("Error: Could not read temperature data");
+    return;
+  }
+
+  //지금 입력받은 주소로 온도값을 측정하는데 누구껀지 확인해보자!
+  for(int i =0;i<3;i++){
+    if(is_match(deviceAddress,mysensors[i])){
+       //match
+       //Serial.print(i+1);
+       //Serial.println("번째 센서입니다!");
+       mytemp[i] = tempC;
+       break;
+    }
+  }
+  
+  //Serial.print("Temp C: ");
+  //Serial.println(tempC);
+}
+
+//주소2개를 입력받아서 같은지 아닌지를 반환하는 함수!
+bool is_match(DeviceAddress da1, DeviceAddress da2){
+  //일단 같다고 보고 시작한다!
+  bool result = true;
+  for(int i = 0;i<8;i++){
+    //단 하나라도 틀리면 틀린것이다!
+    if(da1[i] != da2[i]){
+      result = false;
+      break;
+    }
+  }
+
+  return result;
+}