Add debug logging and increase MacOS serial port timeout to 2000ms

Co-authored-by: jyong15 <26561407+jyong15@users.noreply.github.com>

Author: Copilot

ShimmerDriver/src/main/java/com/shimmerresearch/bluetooth/ShimmerRadioInitializer.java

@@ -27,6 +27,7 @@ public ShimmerRadioInitializer(AbstractSerialPortHal serialCommPort){
 	}
 
 	public ShimmerRadioInitializer(AbstractSerialPortHal serialCommPort, boolean useLegacyDelayBeforeBtRead){
+		System.out.println("ShimmerRadioInitializer: Constructor called with delay flag = " + useLegacyDelayBeforeBtRead);
 		mUseLegacyDelayToDelayForResponse = useLegacyDelayBeforeBtRead;
 		this.serialCommPort = serialCommPort;
 	}
@@ -55,8 +56,12 @@ protected int readHardwareVersion() throws ShimmerException, InterruptedExceptio
 		byte[] instruction = {InstructionsGet.GET_SHIMMER_VERSION_COMMAND_VALUE}; 
 
 		serialCommPort.txBytes(instruction);
-		if(mUseLegacyDelayToDelayForResponse)
+		if(mUseLegacyDelayToDelayForResponse) {
+			System.out.println("ShimmerRadioInitializer: Applying command-response delay (200ms)");
 			Thread.sleep(200);
+		} else {
+			System.out.println("ShimmerRadioInitializer: No command-response delay (flag is false)");
+		}
 		byte[] response = serialCommPort.rxBytes(3);
 		if (response==null){
 			serialCommPort.disconnect();

ShimmerDriverPC/src/main/java/com/shimmerresearch/pcSerialPort/SerialPortCommJssc.java

@@ -58,6 +58,12 @@ public SerialPortCommJssc(String comPort, String uniqueId, int baudToUse) {
 		mBaudToUse = baudToUse;
         mSerialPort = new SerialPort(mComPort);
         jsscByteWriter = new JsscByteWriter(mSerialPort);
+        
+        // On MacOS, increase timeout to accommodate command-response delay
+        if(UtilShimmer.isOsMac()) {
+        	setTimeout(SERIAL_PORT_TIMEOUT_2000);
+        	consolePrintLn("MacOS: Using extended serial port timeout (2000ms)");
+        }
 	}
 
 	public SerialPortCommJssc(String comPort, String uniqueId, int baudToUse, SerialPortListener shimmerSerialEventCallback) {