89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
// This sketch demonstrates connecting and sending telemetry
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// using ThingsBoard SDK
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//
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// Hardware:
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// - Arduino Uno
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// - ESP8266 connected to Arduino Uno
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#include "ThingsBoard.h"
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#include <WiFiEspClient.h>
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#include <WiFiEsp.h>
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#include "SoftwareSerial.h"
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#define WIFI_AP "YOUR_WIFI_AP"
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#define WIFI_PASSWORD "YOUR_WIFI_PASSWORD"
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// See https://thingsboard.io/docs/getting-started-guides/helloworld/
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// to understand how to obtain an access token
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#define TOKEN "YOUR_ACCESS_TOKEN"
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#define THINGSBOARD_SERVER "demo.thingsboard.io"
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// Baud rate for serial debug
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#define SERIAL_DEBUG_BAUD 9600
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// Baud rate for communicating with ESP chip
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#define SERIAL_ESP8266_BAUD 9600
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// Serial driver for ESP
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SoftwareSerial soft(2, 3); // RX, TX
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// Initialize the Ethernet client object
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WiFiEspClient espClient;
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// Initialize ThingsBoard instance
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ThingsBoard tb(espClient);
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// the Wifi radio's status
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int status = WL_IDLE_STATUS;
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void setup() {
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// initialize serial for debugging
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Serial.begin(SERIAL_DEBUG_BAUD);
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// initialize serial for ESP module
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soft.begin(SERIAL_ESP8266_BAUD);
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// initialize ESP module
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WiFi.init(&soft);
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// check for the presence of the shield
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if (WiFi.status() == WL_NO_SHIELD) {
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Serial.println("WiFi shield not present");
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// don't continue
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while (true);
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}
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Serial.println("Connected to AP");
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}
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void loop() {
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delay(1000);
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if (status != WL_CONNECTED) {
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Serial.println("Connecting to AP ...");
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Serial.print("Attempting to connect to WPA SSID: ");
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Serial.println(WIFI_AP);
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// Connect to WPA/WPA2 network
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status = WiFi.begin(WIFI_AP, WIFI_PASSWORD);
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return;
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}
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if (!tb.connected()) {
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// Connect to the ThingsBoard
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Serial.print("Connecting to: ");
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Serial.print(THINGSBOARD_SERVER);
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Serial.print(" with token ");
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Serial.println(TOKEN);
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if (!tb.connect(THINGSBOARD_SERVER, TOKEN)) {
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Serial.println("Failed to connect");
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return;
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}
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}
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Serial.println("Sending data...");
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// Uploads new telemetry to ThingsBoard using MQTT.
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// See https://thingsboard.io/docs/reference/mqtt-api/#telemetry-upload-api
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// for more details
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tb.sendTelemetryInt("temperature", 22);
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tb.sendTelemetryFloat("humidity", 42.5);
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tb.loop();
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}
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