Fix signature bytes in the DFU class bootloader.

Bootloaders/DFU/BootloaderDFU.c

@@ -785,13 +785,20 @@ static void ProcessWriteCommand(void)
 static void ProcessReadCommand(void)
 {
 	const uint8_t BootloaderInfo[3] = {BOOTLOADER_VERSION, BOOTLOADER_ID_BYTE1, BOOTLOADER_ID_BYTE2};
-	const uint8_t SignatureInfo[3]  = {AVR_SIGNATURE_1,    AVR_SIGNATURE_2,     AVR_SIGNATURE_3};
+	const uint8_t SignatureInfo[4]  = {0x58, AVR_SIGNATURE_1, AVR_SIGNATURE_2, AVR_SIGNATURE_3};
 
 	uint8_t DataIndexToRead = SentCommand.Data[1];
 
-	if (IS_ONEBYTE_COMMAND(SentCommand.Data, 0x00))                         // Read bootloader info
-	  ResponseByte = BootloaderInfo[DataIndexToRead];
+	if (IS_ONEBYTE_COMMAND(SentCommand.Data, 0x00))                        // Read bootloader info
+	{
+		ResponseByte = BootloaderInfo[DataIndexToRead];
+	}
 	else if (IS_ONEBYTE_COMMAND(SentCommand.Data, 0x01))                    // Read signature byte
-	  ResponseByte = SignatureInfo[DataIndexToRead - 0x30];
+	{
+		if (DataIndexToRead < 0x60)
+		  ResponseByte = SignatureInfo[DataIndexToRead - 0x30];
+		else
+		  ResponseByte = SignatureInfo[DataIndexToRead - 0x60 + 3];
+	}
 }
 

LUFA/DoxygenPages/ChangeLog.txt

@@ -15,6 +15,7 @@
   *  - Library Applications:
   *   - Refactored out USB interface IDs in the demo applications into enums (thanks to Laszlo Monda)
   *   - AVRISP-MKII Clone Project PDI/TPI frequency increased from 250KHz to 2MHz as it is now stable
+  *   - Fixed incorrect signature bytes returned in the DFU bootloader
   *
   *  \section Sec_ChangeLog130901 Version 130901
   *  <b>New:</b>