ESP32

#include <ArduinoJson.h>

#include <WiFi.h>

#include <ArduinoHttpClient.h>

#include <Arduino.h>

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const char* ssid     = ""; // Your WiFi ssid

const char* password = ""; //Your Wifi password

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WiFiClient client;

int status = WL_IDLE_STATUS;

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// get this from the wia dashboard. it should start with `d_sk`

const char* device_secret_key = "";

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// Wia API parameters

char server[] = "api.wia.io";

char path[] = "/v1/events";

int port = 80;

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StaticJsonDocument<200> jsonBuffer;

HttpClient httpClient = HttpClient(client, server, port);

JsonObject root = jsonBuffer.to<JsonObject>(); 

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void setup() {

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  // initialize serial communications and wait for port to open:

  Serial.begin(115200);

  while (!Serial) {

    ; // wait for serial port to connect. Needed for native USB port only

  }

​

​

  // attempt to connect to WiFi network:

  while (status != WL_CONNECTED) {

    Serial.print("Attempting to connect to SSID: ");

    Serial.println(ssid);

    // Connect to WPA/WPA2 network. Change this line if using open or WEP network:

    status = WiFi.begin(ssid, password);

    // wait 10 seconds for connection:

    delay(10000);

  }

  Serial.print("IP address: ");

  Serial.println(WiFi.localIP());

}

​

void loop() {

  root["name"] = "hello-wia";

  root["data"] = "";

Serial.println("connecting...");

  // if you get a connection, report back via serial:

  if (client.connect(server, port)) {

    Serial.println("connected");

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    postToWia(root);

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  } else {

    // if you didn't get a connection to the server:

    Serial.println("connection failed");

  }

  // if there are incoming bytes available

  // from the server, read them and print them:

  if (client.available()) {

    char c = client.read();

    Serial.print(c);

  }

​

  // if the server's disconnected, stop the client:

  if (!client.available() && !client.connected()) {

    Serial.println();

    client.stop();

​

    delay(10000);

    //Do nothing forever

    for (;;)

      ;

  }

}

​

void postToWia(JsonObject& data) {

  String dataStr = ""; 

  serializeJson(data, dataStr);

  httpClient.beginRequest();

  httpClient.post(path);

  httpClient.sendHeader("Content-Type", "application/json");

  httpClient.sendHeader("Content-Length", dataStr.length());

  httpClient.sendHeader("Authorization", "Bearer " + String(device_secret_key));

  httpClient.beginBody();

  httpClient.print(dataStr);  

  httpClient.endRequest();

​

}