Minor fixes to demos to add in some missing comments, printf() formatting....

Minor fixes to demos to add in some missing comments, printf() formatting. Make incomplete Bluetooth demo indicate connections visually via the board LEDs.

Demos/Device/ClassDriver/AudioInput/AudioInput.c

@@ -98,6 +98,7 @@ void ProcessNextSample(void)
 	/* Check if the sample reload timer period has elapsed, and that the USB bus is ready for a new sample */
 	if ((TIFR0 & (1 << OCF0A)) && Audio_Device_IsReadyForNextSample(&Microphone_Audio_Interface))
 	{
+		/* Clear the sample reload timer compare flag, ready for the next interval */
 		TIFR0 |= (1 << OCF0A);
 
 		/* Audio sample is ADC value scaled to fit the entire range */

Demos/Device/ClassDriver/AudioOutput/AudioOutput.c

@@ -93,7 +93,7 @@ void ProcessNextSample(void)
 	/* Check if the sample reload timer period has elapsed, and that the USB bus is ready for a new sample */
 	if ((TIFR0 & (1 << OCF0A)) && Audio_Device_IsSampleReceived(&Speaker_Audio_Interface))
 	{
-		/* Clear the sample reload timer */
+		/* Clear the sample reload timer compare flag, ready for the next interval */
 		TIFR0 |= (1 << OCF0A);
 
 		/* Retrieve the signed 16-bit left and right audio samples, convert to 8-bit */

Demos/Host/ClassDriver/RNDISEthernetHost/RNDISEthernetHost.c

@@ -171,7 +171,7 @@ void PrintIncomingPackets(void)
 		printf_P(PSTR("***PACKET (Size %d)***\r\n"), PacketLength);
 	
 		for (uint16_t i = 0; i < PacketLength; i++)
-		  printf("%02x ", PacketBuffer[i]);
+		  printf("0x%02x ", PacketBuffer[i]);
 
 		printf_P(PSTR("\r\n\r\n"));
 		

Demos/Host/Incomplete/BluetoothHost/BluetoothHost.c

@@ -245,6 +245,8 @@ void Bluetooth_ConnectionComplete(void)
 	         Bluetooth_Connection.RemoteAddress[5], Bluetooth_Connection.RemoteAddress[4],
 	         Bluetooth_Connection.RemoteAddress[3], Bluetooth_Connection.RemoteAddress[2],
 	         Bluetooth_Connection.RemoteAddress[1], Bluetooth_Connection.RemoteAddress[0]);
+
+	LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
 }
 
 /** Bluetooth stack callback event for a completed Bluetooth disconnection. When this callback is made,
@@ -258,6 +260,8 @@ void Bluetooth_DisconnectionComplete(void)
 	         Bluetooth_Connection.RemoteAddress[5], Bluetooth_Connection.RemoteAddress[4],
 	         Bluetooth_Connection.RemoteAddress[3], Bluetooth_Connection.RemoteAddress[2],
 	         Bluetooth_Connection.RemoteAddress[1], Bluetooth_Connection.RemoteAddress[0]);
+
+	LEDs_SetAllLEDs(LEDMASK_USB_READY);
 }
 
 /** Bluetooth stack callback event for a Bluetooth ACL Channel connection request. When is callback fires,

Demos/Host/Incomplete/BluetoothHost/BluetoothHost.h

@@ -70,6 +70,9 @@
 		/** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */
 		#define LEDMASK_USB_ERROR        (LEDS_LED1 | LEDS_LED3)
 
+		/** LED mask for the library LED driver, to indicate that the USB interface is busy. */
+		#define LEDMASK_USB_BUSY          LEDS_LED2
+
 	/* Task Definitions: */
 		void Bluetooth_Host_Task(void);
 		

Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c

@@ -73,6 +73,7 @@ void RFCOMM_ProcessPacket(void* Data, Bluetooth_Channel_t* const Channel)
 	const uint8_t*         FrameData    = (const uint8_t*)Data + sizeof(RFCOMM_Header_t);
 	uint16_t               FrameDataLen = RFCOMM_GetFrameDataLength(FrameData);
 
+	/* Adjust the frame data pointer to skip over the variable size field */
 	FrameData += (FrameDataLen < 128) ? 1 : 2;
 	
 	/* Decode the RFCOMM frame type from the header */
@@ -192,6 +193,8 @@ static void RFCOMM_ProcessControlCommand(const RFCOMM_Command_t* CommandHeader,
 
 			RFCOMM_SendFrame(RFCOMM_CONTROL_DLCI, false, RFCOMM_Frame_UIH, sizeof(RFCOMM_Command_t), &Response, Channel);			
 			break;
+		default:
+			BT_RFCOMM_DEBUG(1, "<< Unknown Command");			
 	}
 }
 
@@ -242,11 +245,10 @@ static void RFCOMM_SendFrame(const uint8_t DLCI, const bool CommandResponse, con
 
 static uint8_t RFCOMM_GetFCSValue(const void* FrameStart, uint8_t Length)
 {
-	const uint8_t* CurrPos = FrameStart;
-	uint8_t        FCS     = 0xFF;
+	uint8_t FCS = 0xFF;
 	
 	for (uint8_t i = 0; i < Length; i++)
-	  FCS = pgm_read_byte(&CRC8_Table[FCS ^ *(CurrPos++)]);
+	  FCS = pgm_read_byte(&CRC8_Table[FCS ^ ((uint8_t*)FrameStart)[i]]);
 
 	return ~FCS;
 }

Demos/Host/LowLevel/RNDISEthernetHost/RNDISEthernetHost.c

@@ -155,7 +155,7 @@ void PrintIncomingPackets(void)
 		Pipe_Read_Stream_LE(&PacketBuffer, PacketLength);
 		
 		for (uint16_t i = 0; i < PacketLength; i++)
-		  printf("%02x ", PacketBuffer[i]);
+		  printf("0x%02x ", PacketBuffer[i]);
 	}
 	
 	Pipe_ClearIN();