xkKzQd2q

1
2#include <ESP8266WiFi.h>
3#include <NTPClient.h>
4#include <WiFiUdp.h>
5#include <ThingspeakUploader.h>
6
7String api_key = "7ER2V5YFUL7G8CXB";     //  Enter your Write API key from ThingSpeak
8const char *ssid =  "Internetz";     // replace with your wifi ssid and wpa2 key
9const char *pass =  "nutellamarmelade";
10const char* server = "api.thingspeak.com";
11
12WiFiClient client;
13
14
15
16const long utcOffsetInSeconds = 0;
17WiFiUDP ntpUDP;
18NTPClient timeClient(ntpUDP, "pool.ntp.org", utcOffsetInSeconds);
19ThingspeakUploader up();
20
21void setup() 
22{
23       Serial.begin(115200);
24       delay(10);
25       pinMode(2, OUTPUT);
26       digitalWrite(2, 0);
27       Serial.println("Connecting to ");
28       Serial.println(ssid);
29
30       WiFi.hostname("ESP8266");
31       WiFi.begin(ssid, pass);
32       
33           
34 
35      while (WiFi.status() != WL_CONNECTED) 
36     {
37            delay(500);
38            Serial.print(".");
39     }
40      Serial.println("");
41      Serial.println("WiFi connected");
42
43       
44       pinMode(4, INPUT);
45
46       timeClient.begin();
47 
48}
49
50long b = 1;
51
52
53void loop() 
54{
55  b = b * 2;
56               if (client.connect(server,80))   //   "184.106.153.149" or api.thingspeak.com
57            {  
58                  timeClient.update();
59                   String data_to_send = api_key;
60                    data_to_send += "&field1=";
61                    data_to_send += b;
62                    data_to_send += "&created_at=";
63                    data_to_send += timeClient.getFormattedDate();;
64
65                   client.print("POST /update HTTP/1.1\n");
66                   client.print("Host: api.thingspeak.com\n");
67                   client.print("Connection: close\n");
68                   client.print("X-THINGSPEAKAPIKEY: " + api_key + "\n");
69                   client.print("Content-Type: application/x-www-form-urlencoded\n");
70                   client.print("Content-Length: ");
71                   client.print(data_to_send.length());
72                   client.print("\n\n");
73                   client.print(data_to_send);
74                   delay(1000);
75                   Serial.println(data_to_send);
76                   up.make();
77              }
78          client.stop();
79 
80          Serial.println("Waiting...");
81           
82  // thingspeak needs minimum 15 sec delay between updates, i've set it to 30 seconds
83  delay(30000);
84}