Added new NO_BLOCK_SUPPORT, NO_EEPROM_BYTE_SUPPORT, NO_FLASH_BYTE_SUPPORT and NO_LOCK_BYTE_SUPPORT compile time options to the CDC class bootloader.

Bootloaders/CDC/BootloaderCDC.c

@@ -155,6 +155,7 @@ void EVENT_USB_Device_UnhandledControlRequest(void)
 	}
 }
 
+#if !defined(NO_BLOCK_SUPPORT)
 /** 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.
  *
@@ -236,15 +237,13 @@ static void ReadWriteMemoryBlock(const uint8_t Command)
 
 					/* Increment the address counter after use */
 					CurrAddress += 2;
-
-					HighByte = false;
 				}
 				else
 				{
 					LowByte = FetchNextCommandByte();
-
-					HighByte = true;
 				}
+				
+				HighByte = !HighByte;
 			}
 			else
 			{
@@ -270,6 +269,7 @@ static void ReadWriteMemoryBlock(const uint8_t Command)
 		WriteNextResponseByte('\r');
 	}
 }
+#endif
 
 /** Retrieves the next byte from the host in the CDC data OUT endpoint, and clears the endpoint bank if needed
  *  to allow reception of the next data packet from the host.
@@ -389,14 +389,6 @@ void CDC_Task(void)
 			WriteNextResponseByte(AVR_SIGNATURE_2);
 			WriteNextResponseByte(AVR_SIGNATURE_1);
 		}
-		else if (Command == 'b')
-		{
-			WriteNextResponseByte('Y');
-
-			/* Send block size to the host */
-			WriteNextResponseByte(SPM_PAGESIZE >> 8);
-			WriteNextResponseByte(SPM_PAGESIZE & 0xFF);
-		}
 		else if (Command == 'e')
 		{
 			/* Clear the application section of flash */
@@ -413,6 +405,7 @@ void CDC_Task(void)
 			/* Send confirmation byte back to the host */
 			WriteNextResponseByte('\r');
 		}
+		#if !defined(NO_LOCK_BYTE_SUPPORT)
 		else if (Command == 'l')
 		{
 			/* Set the lock bits to those given by the host */
@@ -421,6 +414,7 @@ void CDC_Task(void)
 			/* Send confirmation byte back to the host */
 			WriteNextResponseByte('\r');
 		}
+		#endif
 		else if (Command == 'r')
 		{
 			WriteNextResponseByte(boot_lock_fuse_bits_get(GET_LOCK_BITS));
@@ -437,6 +431,22 @@ void CDC_Task(void)
 		{
 			WriteNextResponseByte(boot_lock_fuse_bits_get(GET_EXTENDED_FUSE_BITS));
 		}
+		#if !defined(NO_BLOCK_SUPPORT)
+		else if (Command == 'b')
+		{
+			WriteNextResponseByte('Y');
+
+			/* Send block size to the host */
+			WriteNextResponseByte(SPM_PAGESIZE >> 8);
+			WriteNextResponseByte(SPM_PAGESIZE & 0xFF);
+		}
+		else if ((Command == 'B') || (Command == 'g'))
+		{
+			/* Delegate the block write/read to a separate function for clarity */
+			ReadWriteMemoryBlock(Command);
+		}
+		#endif
+		#if !defined(NO_FLASH_BYTE_SUPPORT)
 		else if (Command == 'C')
 		{
 			/* Write the high byte to the current flash page */
@@ -448,7 +458,7 @@ void CDC_Task(void)
 		else if (Command == 'c')
 		{
 			/* Write the low byte to the current flash page */
-			boot_page_fill(CurrAddress | 1, FetchNextCommandByte());
+			boot_page_fill(CurrAddress | 0x01, FetchNextCommandByte());
 
 			/* Increment the address */
 			CurrAddress += 2;
@@ -467,11 +477,6 @@ void CDC_Task(void)
 			/* Send confirmation byte back to the host */
 			WriteNextResponseByte('\r');
 		}
-		else if ((Command == 'B') || (Command == 'g'))
-		{
-			/* Delegate the block write/read to a separate function for clarity */
-			ReadWriteMemoryBlock(Command);
-		}
 		else if (Command == 'R')
 		{
 			#if (FLASHEND > 0xFFFF)
@@ -483,6 +488,8 @@ void CDC_Task(void)
 			WriteNextResponseByte(ProgramWord >> 8);
 			WriteNextResponseByte(ProgramWord & 0xFF);
 		}
+		#endif
+		#if !defined(NO_EEPROM_BYTE_SUPPORT)
 		else if (Command == 'D')
 		{
 			/* Read the byte from the endpoint and write it to the EEPROM */
@@ -502,13 +509,10 @@ void CDC_Task(void)
 			/* Increment the address after use */
 			CurrAddress += 2;
 		}
-		else if (Command == 27)
+		#endif
+		else if (Command != 27)
 		{
-			/* Escape is sync, ignore */
+			/* Unknown (non-sync) command, return fail code */
-		}
-		else
-		{
-			/* Unknown command, return fail code */
 			WriteNextResponseByte('?');
 		}
 

Bootloaders/CDC/BootloaderCDC.h

@@ -116,7 +116,9 @@
 		void EVENT_USB_Device_ConfigurationChanged(void);
 
 		#if defined(INCLUDE_FROM_BOOTLOADERCDC_C) || defined(__DOXYGEN__)
+			#if !defined(NO_BLOCK_SUPPORT)
 			static void    ReadWriteMemoryBlock(const uint8_t Command);
+			#endif
 			static uint8_t FetchNextCommandByte(void);
 			static void    WriteNextResponseByte(const uint8_t Response);
 		#endif

Bootloaders/CDC/BootloaderCDC.txt

@@ -64,9 +64,27 @@
  *
  *  <table>
  *   <tr>
- *    <td>
+ *    <td>NO_BLOCK_SUPPORT</td>
- *     None
+ *    <td>Makefile LUFA_OPTS</td>
- *    </td>
+ *    <td>Define to disable memory block read/write support in the bootloader, requiring all reads and writes to be made
+ *        using the byte-level commands.
+ *   </tr>
+ *   <tr>
+ *    <td>NO_EEPROM_BYTE_SUPPORT</td>
+ *    <td>Makefile LUFA_OPTS</td>
+ *    <td>Define to disable EEPROM memory byte read/write support in the bootloader, requiring all EEPROM reads and writes
+ *        to be made using the block-level commands.
+ *   </tr>
+ *   <tr>
+ *    <td>NO_FLASH_BYTE_SUPPORT</td>
+ *    <td>Makefile LUFA_OPTS</td>
+ *    <td>Define to disable FLASH memory byte read/write support in the bootloader, requiring all FLASH reads and writes
+ *        to be made using the block-level commands.
+ *   </tr>
+ *   <tr>
+ *    <td>NO_LOCK_BYTE_SUPPORT</td>
+ *    <td>Makefile LUFA_OPTS</td>
+ *    <td>Define to disable lock byte write support in the bootloader, preventing the lock bits from being set progmatically.
  *   </tr>
  *  </table>
  */

Bootloaders/CDC/makefile

@@ -124,6 +124,11 @@ LUFA_OPTS += -D NO_DEVICE_REMOTE_WAKEUP
 LUFA_OPTS += -D NO_STREAM_CALLBACKS
 LUFA_OPTS += -D NO_SOF_EVENTS
 
+#LUFA_OPTS += -D NO_BLOCK_SUPPORT
+#LUFA_OPTS += -D NO_EEPROM_BYTE_SUPPORT
+#LUFA_OPTS += -D NO_FLASH_BYTE_SUPPORT
+#LUFA_OPTS += -D NO_LOCK_BYTE_SUPPORT
+
 
 # Create the LUFA source path variables by including the LUFA root makefile
 include $(LUFA_PATH)/LUFA/makefile

Bootloaders/DFU/Descriptors.c

@@ -37,7 +37,7 @@
 
 #include "Descriptors.h"
 
-/** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall
+/** Device descriptor structure. This descriptor, located in SRAM memory, describes the overall
  *  device characteristics, including the supported USB version, control endpoint size and the
  *  number of device configurations. The descriptor is read out by the USB host when the enumeration
  *  process begins.
@@ -64,7 +64,7 @@ USB_Descriptor_Device_t DeviceDescriptor =
 	.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
 };
 
-/** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage
+/** Configuration descriptor structure. This descriptor, located in SRAM memory, describes the usage
  *  of the device in one of its supported configurations, including information about any device interfaces
  *  and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting
  *  a configuration so that the host may correctly communicate with the USB device.
@@ -115,7 +115,7 @@ USB_Descriptor_Configuration_t ConfigurationDescriptor =
 		}
 };
 
-/** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests
+/** Language descriptor structure. This descriptor, located in SRAM memory, is returned when the host requests
  *  the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate
  *  via the language ID table available at USB.org what languages the device supports for its string descriptors.
  */

LUFA/ManPages/ChangeLog.txt

@@ -32,6 +32,8 @@
   *    tasks for each driver is called
   *  - Added standard keyboard HID report scancode defines (thanks to László Monda)
   *  - Added new Pipe_GetBusyBanks(), Endpoint_GetBusyBanks() and Endpoint_AbortPendingIN() functions
+  *  - Added new NO_BLOCK_SUPPORT, NO_EEPROM_BYTE_SUPPORT, NO_FLASH_BYTE_SUPPORT and NO_LOCK_BYTE_SUPPORT compile time options to the
+  *    CDC class bootloader
   *
   *  <b>Changed:</b>
   *  - Removed complicated logic for the Endpoint_ConfigureEndpoint() function to use inlined or function called versions