Updated the AVRISP-MKII Clone programmer project to be compatible with the latest version of AVR Studio (version 5.1).

Changed the AVRISP-MKII Clone programmer project to report a fixed 3.3V VTARGET voltage on USB AVRs lacking an ADC instead of 5V to prevent warnings in AVR Studio 5.1 when programming XMEGA devices.

Projects/AVRISP-MKII/Lib/V2ProtocolParams.c

@@ -60,11 +60,11 @@ static ParameterItem_t ParameterTable[] =
 
 		{ .ParamID          = PARAM_SW_MINOR,
 		  .ParamPrivileges  = PARAM_PRIV_READ,
-		  .ParamValue       = 0x0D                               },
+		  .ParamValue       = FIRMWARE_VERSION_MINOR             },
 
 		{ .ParamID          = PARAM_VTARGET,
 		  .ParamPrivileges  = PARAM_PRIV_READ,
-		  .ParamValue       = 0x32                               },
+		  .ParamValue       = (uint8_t)(3.3 * 10)                },
 
 		{ .ParamID          = PARAM_SCK_DURATION,
 		  .ParamPrivileges  = PARAM_PRIV_READ | PARAM_PRIV_WRITE,

Projects/AVRISP-MKII/Lib/V2ProtocolParams.h

@@ -59,6 +59,12 @@
 
 		/** Total number of parameters in the parameter table */
 		#define TABLE_PARAM_COUNT   (sizeof(ParameterTable) / sizeof(ParameterTable[0]))
+		
+		#if (!defined(FIRMWARE_VERSION_MINOR) || defined(__DOXYGEN__))
+			/** Minor firmware version, reported to the host on request; must match the version
+			 *  the host is expecting, or it (may) reject further communications with the programmer. */
+			#define FIRMWARE_VERSION_MINOR   0x11
+		#endif
 
 	/* Type Defines: */
 		/** Type define for a parameter table entry indicating a PC readable or writable device parameter. */

Projects/AVRISP-MKII/Lib/XPROG/XPROGProtocol.c

@@ -455,6 +455,12 @@ static void XPROGProtocol_SetParam(void)
 		case XPRG_PARAM_NVMCSR_REG:
 			XPROG_Param_NVMCSRRegAddr = Endpoint_Read_8();
 			break;
+		case XPRG_PARAM_UNKNOWN_1:
+			/* TODO: Undocumented parameter added in AVRStudio 5.1, purpose unknown. Must ACK and discard or
+			         the communication with AVRStudio 5.1 will fail.
+			*/
+			Endpoint_Discard_16();
+			break;
 		default:
 			ReturnStatus = XPRG_ERR_FAILED;
 			break;

Projects/AVRISP-MKII/Lib/XPROG/XPROGProtocol.h

@@ -49,6 +49,10 @@
 
 	/* Preprocessor Checks: */
 		#if ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))
+			/* On the XPLAIN board, we only need PDI programming
+			   for the ATXMEGA128A1 - disable ISP to prevent hardware
+			   damage.
+			 */
 			#undef ENABLE_ISP_PROTOCOL
 
 			#if !defined(ENABLE_XPROG_PROTOCOL)
@@ -98,6 +102,7 @@
 		#define XPRG_PARAM_EEPPAGESIZE              0x02
 		#define XPRG_PARAM_NVMCMD_REG               0x03
 		#define XPRG_PARAM_NVMCSR_REG               0x04
+		#define XPRG_PARAM_UNKNOWN_1                0x05
 
 		#define XPRG_PROTOCOL_PDI                   0x00
 		#define XPRG_PROTOCOL_JTAG                  0x01