Add dummy undocumented TPI XPROG parameters to the AVRISP project so that TPI programming mode can be entered.

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

@@ -420,12 +420,21 @@ static void XPROGProtocol_SetParam(void)
 	uint8_t XPROGParam = Endpoint_Read_Byte();
 	
 	/* Determine which parameter is being set, store the new parameter value */
-	if (XPROGParam == XPRG_PARAM_NVMBASE)
+	switch (XPROGParam)
+	{
+		case XPRG_PARAM_NVMBASE:
 			XPROG_Param_NVMBase = Endpoint_Read_DWord_BE();
-	else if (XPROGParam == XPRG_PARAM_EEPPAGESIZE)
+			break;
+		case XPRG_PARAM_EEPPAGESIZE:
 			XPROG_Param_EEPageSize = Endpoint_Read_Word_BE();
-	else
+			break;
+		case XPRG_PARAM_UNDOC_1:
+		case XPRG_PARAM_UNDOC_2:
+			break; // Undocumented TPI parameter, just accept and discard
+		default:
 			ReturnStatus = XPRG_ERR_FAILED;
+			break;
+	}
 
 	Endpoint_ClearOUT();
 	Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);

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

@@ -97,6 +97,8 @@
 
 		#define XPRG_PARAM_NVMBASE                  0x01
 		#define XPRG_PARAM_EEPPAGESIZE              0x02
+		#define XPRG_PARAM_UNDOC_1                  0x03
+		#define XPRG_PARAM_UNDOC_2                  0x04
 		
 		#define XPRG_PROTOCOL_PDI                   0x00
 		#define XPRG_PROTOCOL_JTAG                  0x01