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ESP8266_TEMP_SLEEP_2/ESP8266_TEMP_SLEEP_2.ino

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+
+/* DHT22 temperature and humidity data are uploaded to thingspeak using
+ * WeMOS ESP8266 MCU.
+ * 
+ * Details: http://embedded-lab.com/blog/iot-temperature-and-humidity-logger/
+ */
+#include <ESP8266WiFi.h>
+#include <DHT.h>
+//#include "Math.h"
+#define DHTTYPE DHT22
+#define DHTPIN  0   // DHT22 data pin connects to D4
+
+// Time to sleep (in seconds):
+const int sleepTimeS = 60;
+
+DHT dht(DHTPIN, DHTTYPE, 11); // 11 works fine for ESP8266
+
+
+float prevTemp = 0;
+const char* server = "api.thingspeak.com";
+String apiKey ="API Key here";
+const char* MY_SSID = "Livebox-37cc"; 
+const char* MY_PWD = "8A6060920A8A86896F770F2C47";
+int sent = 0;
+
+
+void setup() {
+  Serial.begin(115200);
+  dht.begin();
+  connectWifi();
+  
+}
+
+void loop() {
+  float t1,humidity;
+  //char buffer[10];
+  humidity = dht.readHumidity();          // Read humidity (percent)
+  t1 = dht.readTemperature(true);     // Read temperature as Fahrenheit
+    // Check if any reads failed and exit early (to try again).
+  if (isnan(humidity) || isnan(t1)) {
+     Serial.println("Failed to read from DHT sensor!");
+      return;
+  }
+  
+  
+  Serial.print(String(sent)+" Temperature: ");
+  Serial.println(t1);
+  Serial.print(String(sent)+" Humidity: ");
+  Serial.println(humidity);
+  sendTeperatureTS(t1, humidity);
+  ESP.deepSleep(sleepTimeS*1000000, WAKE_RF_DEFAULT); // Sleep for 60 seconds
+}
+
+void connectWifi()
+{
+  Serial.print("Connecting to "+*MY_SSID);
+  WiFi.begin(MY_SSID, MY_PWD);
+  while (WiFi.status() != WL_CONNECTED) {
+  delay(1000);
+  Serial.print(".");
+  }
+  
+  Serial.println("");
+  Serial.println("Connected");
+  Serial.println("");  
+}//end connect
+
+void sendTeperatureTS(float temp1, float temp2)
+{  
+   WiFiClient client;
+  
+   if (client.connect(server, 80)) { // use ip 184.106.153.149 or api.thingspeak.com
+   Serial.println("WiFi Client connected ");
+   
+   String postStr = apiKey;
+   postStr += "&field1=";
+   postStr += String(temp1);
+   postStr += "&field2=";
+   postStr += String(temp2);
+   postStr += "\r\n\r\n";
+   
+   client.print("POST /update HTTP/1.1\n");
+   client.print("Host: api.thingspeak.com\n");
+   client.print("Connection: close\n");
+   client.print("X-THINGSPEAKAPIKEY: " + apiKey + "\n");
+   client.print("Content-Type: application/x-www-form-urlencoded\n");
+   client.print("Content-Length: ");
+   client.print(postStr.length());
+   client.print("\n\n");
+   client.print(postStr);
+   delay(1000);
+   
+   }//end if
+   sent++;
+ client.stop();
+}//end send