examples: uniform initialization error messages

Author: pennam

examples/Central/LedControl/LedControl.ino

@@ -30,7 +30,11 @@ void setup() {
   pinMode(buttonPin, INPUT);
 
   // initialize the Bluetooth® Low Energy hardware
-  BLE.begin();
+  if (!BLE.begin()) {
+    Serial.println("starting Bluetooth® Low Energy module failed!");
+
+    while (1);
+  }
 
   Serial.println("Bluetooth® Low Energy Central - LED control");
 

examples/Peripheral/Advertising/EnhancedAdvertising/EnhancedAdvertising.ino

@@ -12,7 +12,8 @@ void setup() {
   while (!Serial);
 
   if (!BLE.begin()) {
-    Serial.println("failed to initialize BLE!");
+    Serial.println("starting Bluetooth® Low Energy module failed!");
+
     while (1);
   }
 

examples/Peripheral/Advertising/RawDataAdvertising/RawDataAdvertising.ino

@@ -11,7 +11,8 @@ void setup() {
   while (!Serial);
 
   if (!BLE.begin()) {
-    Serial.println("failed to initialize BLE!");
+    Serial.println("starting Bluetooth® Low Energy module failed!");
+
     while (1);
   }
 

examples/Peripheral/BatteryMonitor/BatteryMonitor.ino

@@ -35,7 +35,7 @@ void setup() {
 
   // begin initialization
   if (!BLE.begin()) {
-    Serial.println("starting BLE failed!");
+    Serial.println("starting Bluetooth® Low Energy module failed!");
 
     while (1);
   }

examples/Peripheral/EncryptedBatteryMonitor/EncryptedBatteryMonitor.ino

@@ -154,9 +154,9 @@ void setup() {
   while(1){
     // begin initialization
     if (!BLE.begin()) {
-      Serial.println("starting BLE failed!");
-      delay(200);
-      continue;
+      Serial.println("starting Bluetooth® Low Energy module failed!");
+
+      while (1);
     }
     Serial.println("BT init");
     delay(200);