Bringing comments up-2-date and minor code improvements

Author: aentinger

examples/ArduinoIoTCloud_LED_switch/ArduinoIoTCloud_LED_switch.ino

@@ -1,48 +1,42 @@
 /*
   This sketch demonstrates how to exchange data between your board and the Arduino IoT Cloud.
 
-  Connect a potentiometer (or other analog sensor) to A1 and an LED to Digital Pin 5.
-  When the potentiometer (or sensor) value changes the data is sent to the Cloud.
-  When you flip the switch in the Cloud dashboard the onboard LED lights gets turned ON or OFF.
+  * Connect a potentiometer (or other analog sensor) to A0.
+  * When the potentiometer (or sensor) value changes the data is sent to the Cloud.
+  * When you flip the switch in the Cloud dashboard the onboard LED lights gets turned ON or OFF.
 
   IMPORTANT:
-  This sketch will work with WiFi, GSM and Lora enabled boards supported by Arduino IoT Cloud.
+  This sketch works with WiFi, GSM, NB and Lora enabled boards supported by Arduino IoT Cloud.
   On a LoRa board, if it is configuered as a class A device (default and preferred option), values from Cloud dashboard are received
   only after a value is sent to Cloud.
 
   This sketch is compatible with:
    - MKR 1000
    - MKR WIFI 1010
    - MKR GSM 1400
+   - MKR NB 1500
    - MKR WAN 1300/1310
+   - ESP 8266
 */
+
 #include "arduino_secrets.h"
 #include "thingProperties.h"
 
 void setup() {
-
-  // Initialize serial and wait for port to open:
+  /* Initialize serial and wait up to 5 seconds for port to open */
   Serial.begin(9600);
-  // wait up to 5 seconds for user to open Serial port
-  unsigned long serialBeginTime = millis();
-  while (!Serial && (millis() - serialBeginTime > 5000));
+  for(unsigned long const serialBeginTime = millis(); !Serial && (millis() - serialBeginTime > 5000); ) { }
 
-  Serial.println("Starting Arduino IoT Cloud Example");
+  /* Configure LED pin as an output */
+  pinMode(LED_BUILTIN, OUTPUT);
 
-  // initProperties takes care of connecting your sketch variables to the ArduinoIoTCloud object
+  /* This function takes care of connecting your sketch variables to the ArduinoIoTCloud object */
   initProperties();
-  // tell ArduinoIoTCloud to use right connection handler
-  ArduinoCloud.begin(ArduinoIoTPreferredConnection);
 
-  /*
-      The following function allows you to obtain more information
-      related to the state of network and IoT Cloud connection and errors
-      the higher number the more granular information you'll get.
-      The default is 0 (only errors).
-      Maximum is 3
+  /* Initialize Arduino IoT Cloud library */
+  ArduinoCloud.begin(ArduinoIoTPreferredConnection);
 
-      setDebugMessageLevel(3);
-  */
+  setDebugMessageLevel(DBG_INFO);
   ArduinoCloud.printDebugInfo();
 }
 
@@ -52,8 +46,8 @@ void loop() {
 }
 
 /*
-  this function is called when the "led" property of your Thing changes
-*/
+ * 'onLedChange' is called when the "led" property of your Thing changes
+ */
 void onLedChange() {
   Serial.print("LED set to ");
   Serial.println(led);