124 lines
3.2 KiB
C++
124 lines
3.2 KiB
C++
// This sketch demonstrates connecting and sending telemetry and attributes
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// it batch 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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void setup() {
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uint8_t wifiStatus;
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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("Connecting to AP ...");
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// attempt to connect to WiFi network
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while (wifiStatus != WL_CONNECTED) {
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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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wifiStatus = WiFi.begin(WIFI_AP, WIFI_PASSWORD);
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delay(500);
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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 (!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, retrying ...");
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return;
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}
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}
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Serial.println("Sending telemetry data...");
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const int data_items = 2;
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Telemetry data[data_items] = {
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{ "temperature", 42.2 },
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{ "humidity", 80 },
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};
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/* For C++98 compiler, shipped with Arduino IDE version 1.6.6 or less:
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Telemetry data[data_items] = {
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Telemetry( "temperature", 42.2 ),
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Telemetry( "humidity", 80 ),
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};
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*/
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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.sendTelemetry(data, data_items);
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Serial.println("Sending attributes data...");
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const int attribute_items = 2;
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Attribute attributes[attribute_items] = {
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{ "device_type", "sensor" },
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{ "active", true },
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};
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/* For C++98 compiler, shipped with Arduino IDE version 1.6.6 or less:
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Attribute attributes[data_items] = {
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Attribute( "device_type", "sensor" ),
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Attribute( "active", true ),
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};
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*/
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// Publish attribute update to ThingsBoard using MQTT.
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// See https://thingsboard.io/docs/reference/mqtt-api/#publish-attribute-update-to-the-server
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// for more details
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tb.sendAttributes(attributes, attribute_items);
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tb.loop();
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}
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