skip wait for Serial in bleuart sketch

Author: hathach

cores/nRF5/main.cpp

@@ -44,13 +44,19 @@ static void loop_task(void* arg)
 {
   (void) arg;
 
-  setup();
-
 #if CFG_DEBUG
   // If Serial is not begin(), call it to avoid hard fault
   if ( !Serial ) Serial.begin(115200);
+
+  // Wait for Serial connection in debug mode
+  while ( !Serial ) yield();
+
   dbgPrintVersion();
-  // dbgMemInfo();
+#endif
+
+  setup();
+
+#if CFG_DEBUG
   Bluefruit_printInfo();
 #endif
 

libraries/Bluefruit52Lib/examples/Peripheral/bleuart/bleuart.ino

@@ -24,7 +24,7 @@ BLEBas  blebas;  // battery
 void setup()
 {
   Serial.begin(115200);
-  while ( !Serial ) delay(10);   // for nrf52840 with native usb
+//  while ( !Serial ) delay(10);   // for nrf52840 with native usb
 
   Serial.println("Bluefruit52 BLEUART Example");
   Serial.println("---------------------------\n");