Removed unused line encoding data and control requests from the CDC Bootloader code, to save space.

Bootloaders/CDC/BootloaderCDC.c

@@ -36,17 +36,6 @@
 #define  INCLUDE_FROM_BOOTLOADERCDC_C
 #include "BootloaderCDC.h"
 
-/** Line coding options for the virtual serial port. Although the virtual serial port data is never
- *  sent through a physical serial port, the line encoding data must still be read and preserved from
- *  the host, or the host will detect a problem and fail to open the port. This structure contains the
- *  current encoding options, including baud rate, character format, parity mode and total number of 
- *  bits in each data chunk.
- */
-CDC_Line_Coding_t LineCoding = { .BaudRateBPS = 9600,
-                                 .CharFormat  = OneStopBit,
-                                 .ParityType  = Parity_None,
-                                 .DataBits    = 8            };
-
 /** Current address counter. This stores the current address of the FLASH or EEPROM as set by the host,
  *  and is used when reading or writing to the AVRs memory (either FLASH or EEPROM depending on the issued
  *  command.)
@@ -124,63 +113,6 @@ void EVENT_USB_Device_ConfigurationChanged(void)
 	                           ENDPOINT_BANK_SINGLE);
 }
 
-/** Event handler for the USB_UnhandledControlRequest event. This is used to catch standard and class specific
- *  control requests that are not handled internally by the USB library, so that they can be handled appropriately
- *  for the application.
- */
-void EVENT_USB_Device_UnhandledControlRequest(void)
-{
-	uint8_t* LineCodingData = (uint8_t*)&LineCoding;
-
-	/* Process CDC specific control requests */
-	switch (USB_ControlRequest.bRequest)
-	{
-		case REQ_GetLineEncoding:
-			if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
-			{
-				Endpoint_ClearSETUP();
-
-				for (uint8_t i = 0; i < sizeof(LineCoding); i++)
-				  Endpoint_Write_Byte(*(LineCodingData++));	
-				
-				Endpoint_ClearIN();
-				
-				Endpoint_ClearStatusStage();
-			}
-			
-			break;
-		case REQ_SetLineEncoding:
-			if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
-			{
-				Endpoint_ClearSETUP();
-
-				while (!(Endpoint_IsOUTReceived()))
-				{				
-					if (USB_DeviceState == DEVICE_STATE_Unattached)
-					  return;
-				}
-			
-				for (uint8_t i = 0; i < sizeof(LineCoding); i++)
-				  *(LineCodingData++) = Endpoint_Read_Byte();
-
-				Endpoint_ClearOUT();
-
-				Endpoint_ClearStatusStage();
-			}
-	
-			break;
-		case REQ_SetControlLineState:
-			if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
-			{
-				Endpoint_ClearSETUP();
-				
-				Endpoint_ClearStatusStage();
-			}
-	
-			break;
-	}
-}
-
 /** Reads or writes a block of EEPROM or FLASH memory to or from the appropriate CDC data endpoint, depending
  *  on the AVR910 protocol command issued.
  *
@@ -367,7 +299,7 @@ void CDC_Task(void)
 		{
 			if (Command == 'E')
 			  RunBootloader = false;
-			if (Command == 'T')
+			else if (Command == 'T')
 			  FetchNextCommandByte();
 
 			/* Send confirmation byte back to the host */
@@ -377,7 +309,6 @@ void CDC_Task(void)
 		{
 			/* Return ATMEGA128 part code - this is only to allow AVRProg to use the bootloader */
 			WriteNextResponseByte(0x44);
-
 			WriteNextResponseByte(0x00);
 		}
 		else if (Command == 'a')

Bootloaders/CDC/BootloaderCDC.h

@@ -50,21 +50,6 @@
 		#include <LUFA/Drivers/USB/USB.h>
 
 	/* Macros: */		
-		/** CDC Class Specific request to get the line encoding on a CDC-ACM virtual serial port, including the
-		 *  baud rate, parity, stop bits and data bits.
-		 */
-		#define REQ_GetLineEncoding          0x21
-
-		/** CDC Class Specific request to set the line encoding on a CDC-ACM virtual serial port, including the
-		 *  baud rate, parity, stop bits and data bits.
-		 */
-		#define REQ_SetLineEncoding          0x20
-
-		/** CDC Class Specific request to set the state of the serial handshake lines (such as DCD and RTS) on
-		 *  a CDC-ACM virtual serial port.
-		 */
-		#define REQ_SetControlLineState      0x22
-		
 		/** Version major of the CDC bootloader. */
 		#define BOOTLOADER_VERSION_MAJOR     0x01
 
@@ -84,42 +69,11 @@
 		/** Type define for a non-returning pointer to the start of the loaded application in flash memory. */
 		typedef void (*AppPtr_t)(void) ATTR_NO_RETURN;
 		
-		/** Type define for the CDC-ACM virtual serial port line encoding options, including baud rate, format, parity
-		 *  and size of each data chunk in bits.
-		 */
-		typedef struct
-		{
-			uint32_t BaudRateBPS; /**< Baud rate in BPS */
-			uint8_t  CharFormat; /**< Character format, an entry from the BootloaderCDC_CDC_LineCodingFormats_t enum */
-			uint8_t  ParityType; /**< Parity mode, an entry from the BootloaderCDC_CDC_LineCodeingParity_t enum */
-			uint8_t  DataBits; /**< Size of each data chunk, in bits */
-		} CDC_Line_Coding_t;
-		
-	/* Enums: */
-		/** Enum for the possible line encoding formats on a CDC-ACM virtual serial port */
-		enum BootloaderCDC_CDC_LineCodingFormats_t
-		{
-			OneStopBit          = 0, /**< Single stop bit */
-			OneAndAHalfStopBits = 1, /**< 1.5 stop bits */
-			TwoStopBits         = 2, /**< Two stop bits */
-		};
-		
-		/** Enum for the possible parity modes on a CDC-ACM virtual serial port */
-		enum BootloaderCDC_CDC_LineCodingParity_t
-		{
-			Parity_None         = 0, /**< No data parity checking */
-			Parity_Odd          = 1, /**< Odd data parity checking */
-			Parity_Even         = 2, /**< Even data parity checking */
-			Parity_Mark         = 3, /**< Mark data parity checking */
-			Parity_Space        = 4, /**< Space data parity checking */
-		};
-		
 	/* Function Prototypes: */
 		void CDC_Task(void);
 		void SetupHardware(void);
 
 		void EVENT_USB_Device_ConfigurationChanged(void);
-		void EVENT_USB_Device_UnhandledControlRequest(void);
 
 		#if defined(INCLUDE_FROM_BOOTLOADERCDC_C) || defined(__DOXYGEN__)
 			static void    ReadWriteMemoryBlock(const uint8_t Command);

LUFA/ManPages/ChangeLog.txt

@@ -17,6 +17,7 @@
   *    changed bytes are written to EEPROM to preserve its lifespan
   *  - Changed over the AVRISP-MKII and TemperatureDataLogger projects to use eeprom_update_byte() when writing non-volatile
   *    parameters to EEPROM to preserve its lifespan
+  *  - Removed unused line encoding data and control requests from the CDC Bootloader code, to save space
   *
   *  <b>Fixed:</b>
   *  - Fixed AVRISP project sending a LOAD EXTENDED ADDRESS command to 128KB AVRs after programming or reading from