Fix for 'Uploading to Arduino Yun gives a 'programmer is not responding' error' Sloeber#285

Author: witold-markowski-sentaca

it.baeyens.arduino.core/src/it/baeyens/arduino/communication/ArduinoSerial.java

@@ -65,6 +65,7 @@ public static String wait_for_com_Port_to_appear(MessageConsoleStream console, V
 	int NumTries = 0;
 	int MaxTries = 40; // wait for max 10 seconds as arduino does
 	int delayMs = 250;
+	int PrefNewPortsCopySize=-10;
 	do {
 
 	    NewPorts = Serial.list();
@@ -90,6 +91,14 @@ public static String wait_for_com_Port_to_appear(MessageConsoleStream console, V
 	    console.println("}");
 	    /* end of dump to the console */
 
+	    // code to capture the case: the com port reappears with a name that was in the original list
+	    int NewPortsCopySize = NewPorts.size();
+	    if ((NewPortsCopy.size() == 0) && (NewPortsCopySize == PrefNewPortsCopySize + 1)) {
+		console.println("Comport appeared and disappeared with same name");
+		return defaultComPort;
+	    }
+	    PrefNewPortsCopySize = NewPortsCopySize;
+
 	    if (NumTries++ > MaxTries) {
 		console.println("Comport is not behaving as expected");
 		return defaultComPort;