Create ESP32_cloud_enterprise example

examples/ESP32_cloud_enterprise/ESP32_cloud_enterprise.ino

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+/*
+  This a simple example of the aREST Library for the ESP32 WiFi chip.
+  This example illustrate the cloud part of aREST that makes the board accessible from anywhere
+  See the README file for more details.
+  Written in 2017 by Marco Schwartz under a GPL license.
+
+*/
+/*|-----------------------------------------------------------|*/
+/*|aREST CLOUD ENTERPRISE connection                          |*/
+/*|EMAIL: martinius96@gmail.com                               |*/
+/*|WEBSITE: https://arduino.php5.sk                           |*/
+/*|-----------------------------------------------------------|*/
+// Import required libraries
+#include <WiFi.h>
+#include <PubSubClient.h>
+#include <aREST.h>
+#include "esp_wpa2.h" //wpa2 library for connections to Enterprise networks
+
+// Clients
+WiFiClient espClient;
+PubSubClient client(espClient);
+
+// Create aREST instance
+aREST rest = aREST(client);
+
+// Unique ID to identify the device for cloud.arest.io
+char* device_id = "unique_device_id";
+
+// WiFi & identity parameters
+char EAP_ANONYMOUS_IDENTITY[] = "anonymous@example.com";
+char EAP_IDENTITY[] = "nickname@example.com";
+char EAP_PASSWORD[] = "EDUROAM_PASSWORD";
+const char* ssid = "eduroam"; // Eduroam SSID
+
+// Variables to be exposed to the API
+int temperature;
+int humidity;
+
+// Declare functions to be exposed to the API
+int ledControl(String command);
+
+// Functions
+void callback(char* topic, byte* payload, unsigned int length);
+
+void setup()
+{
+
+  // Start Serial
+  Serial.begin(115200);
+  esp_wifi_sta_wpa2_ent_set_identity((uint8_t *)EAP_ANONYMOUS_IDENTITY, strlen(EAP_ANONYMOUS_IDENTITY));
+  esp_wifi_sta_wpa2_ent_set_username((uint8_t *)EAP_IDENTITY, strlen(EAP_IDENTITY));
+  esp_wifi_sta_wpa2_ent_set_password((uint8_t *)EAP_PASSWORD, strlen(EAP_PASSWORD));
+  esp_wpa2_config_t config = WPA2_CONFIG_INIT_DEFAULT(); //set config settings to default
+  esp_wifi_sta_wpa2_ent_enable(&config); //set config settings to enable function
+
+  // Set callback
+  client.setCallback(callback);
+
+  // Init variables and expose them to REST API
+  temperature = 24;
+  humidity = 40;
+  rest.variable("temperature",&temperature);
+  rest.variable("humidity",&humidity);
+
+  // Function to be exposed
+  rest.function("led",ledControl);
+
+  // Give name & ID to the device (ID should be 6 characters long)
+  rest.set_id(device_id);
+  rest.set_name("esp32");
+
+  // Connect to WiFi
+  WiFi.begin(ssid);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.println("");
+  Serial.println("WiFi connected");
+
+}
+
+void loop() {
+
+  // Connect to the cloud
+  rest.handle(client);
+
+}
+
+// Handles message arrived on subscribed topic(s)
+void callback(char* topic, byte* payload, unsigned int length) {
+
+  rest.handle_callback(client, topic, payload, length);
+
+}
+
+// Custom function accessible by the API
+int ledControl(String command) {
+
+  // Get state from command
+  int state = command.toInt();
+
+  digitalWrite(6,state);
+  return 1;
+}