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examples/MKRWIFI1010_Cloud_Blink/MKRWIFI1010_Cloud_Blink.ino

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+#include <ArduinoIoTCloud.h>
+#include <WiFiConnectionManager.h>
+
+///////please enter your sensitive data in the Secret tab/arduino_secrets.h
+char ssid[] = SECRET_WIFI_NAME; // your network SSID (name)
+char pass[] = SECRET_PASSWORD; // your network password (use for WPA, or use as key for WEP)
+
+String cloudSerialBuffer = ""; // the string used to compose network messages from the received characters
+// handles connection to the network
+ConnectionManager *ArduinoIoTPreferredConnection = new WiFiConnectionManager(SECRET_WIFI_NAME, SECRET_PASSWORD);
+
+void setup() {
+  setDebugMessageLevel(3); // used to set a level of granularity in information output [0...4]
+  Serial.begin(9600);
+  while (!Serial); // waits for the serial to become available
+  ArduinoCloud.begin(ArduinoIoTPreferredConnection); // initialize a connection to the Arduino IoT Cloud
+  while (ArduinoCloud.connected()); // needed to wait for the inizialization of CloudSerial
+  CloudSerial.print("I'm ready for blinking!\n");
+}
+
+void loop() {
+  ArduinoCloud.update();
+  // check if there is something waiting to be read
+  if (CloudSerial.available()) {
+    char character = CloudSerial.read();
+    cloudSerialBuffer += character;
+    // if a \n character has been received, there should be a complete command inside cloudSerialBuffer
+    if (character == '\n') {
+      handleString();
+    }
+  } else { // if there is nothing to read, it could be that the last command didn't end with a '\n'. Check.
+    handleString();
+  }
+  // Just to be able to simulate the board responses through the serial monitor
+  if (Serial.available()) {
+    CloudSerial.write(Serial.read());
+  }
+}
+void handleString() {
+  // Don't proceed if the string is empty
+  if (cloudSerialBuffer.equals("")) {
+    return;
+  }
+  // Remove leading and trailing whitespaces
+  cloudSerialBuffer.trim();
+  // Make it uppercase;
+  cloudSerialBuffer.toUpperCase();
+  if (cloudSerialBuffer.equals("ON")) {
+    digitalWrite(LED_BUILTIN, HIGH);
+  } else if (cloudSerialBuffer.equals("OFF")) {
+    digitalWrite(LED_BUILTIN, LOW);
+  }
+  sendString(cloudSerialBuffer);
+  // Reset cloudSerialBuffer
+  cloudSerialBuffer = "";
+}
+// sendString sends a string to the Arduino Cloud.
+void sendString(String stringToSend) {
+  // send the characters one at a time
+  char lastSentChar = 0;
+  for (int i = 0; i < stringToSend.length(); i++) {
+    lastSentChar = stringToSend.charAt(i);
+    CloudSerial.write(lastSentChar);
+  }
+  // if the last sent character wasn't a '\n' add it
+  if (lastSentChar != '\n') {
+    CloudSerial.write('\n');
+  }
+}