diff --git a/Target/Source/ARM7_LPC2000/can.c b/Target/Source/ARM7_LPC2000/can.c
index 726758cc..4dcd12d4 100644
--- a/Target/Source/ARM7_LPC2000/can.c
+++ b/Target/Source/ARM7_LPC2000/can.c
@@ -246,12 +246,14 @@ void CanTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE is a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool CanReceivePacket(blt_int8u *data)
+blt_bool CanReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   blt_int32u rxMsgId;
+  blt_int8u rxMsgDlc;
   blt_bool result = BLT_FALSE;
   
   /* check if a new message was received */
@@ -268,6 +270,13 @@ blt_bool CanReceivePacket(blt_int8u *data)
     /* see if this is the message identifier that we are interested in */
     if (rxMsgId == BOOT_COM_CAN_RX_MSG_ID)
     {
+      /* store the message data length */
+      rxMsgDlc = ((blt_int8u)(CAN1RFS >> 16)) & 0x0Fu;
+      if (rxMsgDlc > 8)
+      {
+        rxMsgDlc = 8;
+      }
+      *len = rxMsgDlc;
       /* store the message data */
       data[0] = (blt_int8u)CAN1RDA;
       data[1] = (blt_int8u)(CAN1RDA >> 8);
diff --git a/Target/Source/ARM7_LPC2000/uart.c b/Target/Source/ARM7_LPC2000/uart.c
index 61fb9ddf..24791875 100644
--- a/Target/Source/ARM7_LPC2000/uart.c
+++ b/Target/Source/ARM7_LPC2000/uart.c
@@ -165,10 +165,11 @@ void UartTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UartReceivePacket(blt_int8u *data)
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -208,6 +209,8 @@ blt_bool UartReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/ARMCM0_STM32F0/can.c b/Target/Source/ARMCM0_STM32F0/can.c
index 71340fd0..bb5f281f 100644
--- a/Target/Source/ARMCM0_STM32F0/can.c
+++ b/Target/Source/ARMCM0_STM32F0/can.c
@@ -222,10 +222,11 @@ void CanTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE is a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool CanReceivePacket(blt_int8u *data)
+blt_bool CanReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   CanRxMsg rxMsg;
   blt_int8u byteIdx;
@@ -252,6 +253,7 @@ blt_bool CanReceivePacket(blt_int8u *data)
     /* is the identifier a match to the bootloader reception message identifier? */
     if (canIdMatched == BLT_TRUE)
     {
+      *len = rxMsg.DLC;
       for (byteIdx=0; byteIdx<rxMsg.DLC; byteIdx++)
       {
         data[byteIdx] = rxMsg.Data[byteIdx];
diff --git a/Target/Source/ARMCM0_STM32F0/uart.c b/Target/Source/ARMCM0_STM32F0/uart.c
index 7e551cac..34572106 100644
--- a/Target/Source/ARMCM0_STM32F0/uart.c
+++ b/Target/Source/ARMCM0_STM32F0/uart.c
@@ -145,10 +145,11 @@ void UartTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UartReceivePacket(blt_int8u *data)
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -188,6 +189,8 @@ blt_bool UartReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/ARMCM0_XMC1/can.c b/Target/Source/ARMCM0_XMC1/can.c
index c4182661..20762202 100644
--- a/Target/Source/ARMCM0_XMC1/can.c
+++ b/Target/Source/ARMCM0_XMC1/can.c
@@ -241,10 +241,11 @@ void CanTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE is a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool CanReceivePacket(blt_int8u *data)
+blt_bool CanReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   blt_int8u byteIdx;
   blt_bool result = BLT_FALSE;
@@ -255,6 +256,7 @@ blt_bool CanReceivePacket(blt_int8u *data)
     /* read out and process the newly received data */
     if (XMC_CAN_MO_ReceiveData(&receiveMsgObj) == XMC_CAN_STATUS_SUCCESS)
     {
+      *len = receiveMsgObj.can_data_length;
       for (byteIdx=0; byteIdx<receiveMsgObj.can_data_length; byteIdx++)
       {
         data[byteIdx] = receiveMsgObj.can_data_byte[byteIdx];
diff --git a/Target/Source/ARMCM0_XMC1/uart.c b/Target/Source/ARMCM0_XMC1/uart.c
index 97d106f5..b4961726 100644
--- a/Target/Source/ARMCM0_XMC1/uart.c
+++ b/Target/Source/ARMCM0_XMC1/uart.c
@@ -135,10 +135,11 @@ void UartTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UartReceivePacket(blt_int8u *data)
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -178,6 +179,8 @@ blt_bool UartReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/ARMCM3_EFM32/uart.c b/Target/Source/ARMCM3_EFM32/uart.c
index d76540fb..7fc5827e 100644
--- a/Target/Source/ARMCM3_EFM32/uart.c
+++ b/Target/Source/ARMCM3_EFM32/uart.c
@@ -126,10 +126,11 @@ void UartTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UartReceivePacket(blt_int8u *data)
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -169,6 +170,8 @@ blt_bool UartReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/ARMCM3_LM3S/can.c b/Target/Source/ARMCM3_LM3S/can.c
index f19e009f..187fb5a8 100644
--- a/Target/Source/ARMCM3_LM3S/can.c
+++ b/Target/Source/ARMCM3_LM3S/can.c
@@ -198,10 +198,11 @@ void CanTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE is a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool CanReceivePacket(blt_int8u *data)
+blt_bool CanReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   blt_int32u    status;
   tCANMsgObject msgObject;
@@ -217,6 +218,7 @@ blt_bool CanReceivePacket(blt_int8u *data)
   /* read the message data */
   msgObject.pucMsgData = data;
   CANMessageGet(CAN0_BASE, CAN_RX_MSGOBJECT_IDX+1, &msgObject, true);
+  *len = msgObject.ulMsgLen;
   /* message was successfully received */
   return BLT_TRUE;
 } /*** end of CanReceivePacket ***/
diff --git a/Target/Source/ARMCM3_LM3S/uart.c b/Target/Source/ARMCM3_LM3S/uart.c
index aa9ff06e..f95536bf 100644
--- a/Target/Source/ARMCM3_LM3S/uart.c
+++ b/Target/Source/ARMCM3_LM3S/uart.c
@@ -109,10 +109,11 @@ void UartTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UartReceivePacket(blt_int8u *data)
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -152,6 +153,8 @@ blt_bool UartReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/ARMCM3_STM32F1/can.c b/Target/Source/ARMCM3_STM32F1/can.c
index a59e2cd5..28ce83fb 100644
--- a/Target/Source/ARMCM3_STM32F1/can.c
+++ b/Target/Source/ARMCM3_STM32F1/can.c
@@ -334,10 +334,11 @@ void CanTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE is a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool CanReceivePacket(blt_int8u *data)
+blt_bool CanReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   blt_int32u rxMsgId;
   blt_bool   result = BLT_FALSE;
@@ -361,6 +362,7 @@ blt_bool CanReceivePacket(blt_int8u *data)
     if (rxMsgId == BOOT_COM_CAN_RX_MSG_ID)
     {
       result = BLT_TRUE;
+      *len = ((blt_int8u)(CANx->sFIFOMailBox[0].RDTR)) & 0x0fu;
       /* store the received packet data */
       data[0] = (blt_int8u)0xFF & CANx->sFIFOMailBox[0].RDLR;
       data[1] = (blt_int8u)0xFF & (CANx->sFIFOMailBox[0].RDLR >> 8);
diff --git a/Target/Source/ARMCM3_STM32F1/uart.c b/Target/Source/ARMCM3_STM32F1/uart.c
index 6fee7d90..22f2ec60 100644
--- a/Target/Source/ARMCM3_STM32F1/uart.c
+++ b/Target/Source/ARMCM3_STM32F1/uart.c
@@ -159,10 +159,11 @@ void UartTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UartReceivePacket(blt_int8u *data)
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -202,6 +203,8 @@ blt_bool UartReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/ARMCM3_STM32F1/usb.c b/Target/Source/ARMCM3_STM32F1/usb.c
index 020e9df4..c2dbaab8 100644
--- a/Target/Source/ARMCM3_STM32F1/usb.c
+++ b/Target/Source/ARMCM3_STM32F1/usb.c
@@ -171,10 +171,11 @@ void UsbTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UsbReceivePacket(blt_int8u *data)
+blt_bool UsbReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_USB_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -214,7 +215,8 @@ blt_bool UsbReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
-
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/ARMCM3_STM32F2/can.c b/Target/Source/ARMCM3_STM32F2/can.c
index 5e827993..c4ea9e1e 100644
--- a/Target/Source/ARMCM3_STM32F2/can.c
+++ b/Target/Source/ARMCM3_STM32F2/can.c
@@ -365,10 +365,11 @@ void CanTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE is a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool CanReceivePacket(blt_int8u *data)
+blt_bool CanReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   blt_int32u rxMsgId;
   blt_bool   result = BLT_FALSE;
@@ -392,6 +393,7 @@ blt_bool CanReceivePacket(blt_int8u *data)
     if (rxMsgId == BOOT_COM_CAN_RX_MSG_ID)
     {
       result = BLT_TRUE;
+      *len = ((blt_int8u)(CANx->sFIFOMailBox[0].RDTR)) & 0x0fu;
       /* store the received packet data */
       data[0] = (blt_int8u)0xFF & CANx->sFIFOMailBox[0].RDLR;
       data[1] = (blt_int8u)0xFF & (CANx->sFIFOMailBox[0].RDLR >> 8);
diff --git a/Target/Source/ARMCM3_STM32F2/uart.c b/Target/Source/ARMCM3_STM32F2/uart.c
index 4641e6a3..b6d5fbaa 100644
--- a/Target/Source/ARMCM3_STM32F2/uart.c
+++ b/Target/Source/ARMCM3_STM32F2/uart.c
@@ -135,10 +135,11 @@ void UartTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UartReceivePacket(blt_int8u *data)
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -178,6 +179,8 @@ blt_bool UartReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/ARMCM4_STM32F3/can.c b/Target/Source/ARMCM4_STM32F3/can.c
index bae2383c..cc90b107 100644
--- a/Target/Source/ARMCM4_STM32F3/can.c
+++ b/Target/Source/ARMCM4_STM32F3/can.c
@@ -269,10 +269,11 @@ void CanTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE is a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool CanReceivePacket(blt_int8u *data)
+blt_bool CanReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   blt_int32u rxMsgId = BOOT_COM_CAN_RX_MSG_ID;
   blt_bool result = BLT_FALSE;
@@ -314,6 +315,7 @@ blt_bool CanReceivePacket(blt_int8u *data)
       {
         data[byteIdx] = canHandle.pRxMsg->Data[byteIdx];
       }
+      *len = canHandle.pRxMsg->DLC;
       /* update the return value to indicate that new packet data was received. */
       result = BLT_TRUE;
     }
diff --git a/Target/Source/ARMCM4_STM32F3/uart.c b/Target/Source/ARMCM4_STM32F3/uart.c
index df7203a7..1d8c5063 100644
--- a/Target/Source/ARMCM4_STM32F3/uart.c
+++ b/Target/Source/ARMCM4_STM32F3/uart.c
@@ -125,10 +125,11 @@ void UartTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UartReceivePacket(blt_int8u *data)
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -168,6 +169,8 @@ blt_bool UartReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/ARMCM4_STM32F4/can.c b/Target/Source/ARMCM4_STM32F4/can.c
index 5a751ebe..fcc81121 100644
--- a/Target/Source/ARMCM4_STM32F4/can.c
+++ b/Target/Source/ARMCM4_STM32F4/can.c
@@ -365,10 +365,11 @@ void CanTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE is a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool CanReceivePacket(blt_int8u *data)
+blt_bool CanReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   blt_int32u rxMsgId;
   blt_bool   result = BLT_FALSE;
@@ -392,6 +393,7 @@ blt_bool CanReceivePacket(blt_int8u *data)
     if (rxMsgId == BOOT_COM_CAN_RX_MSG_ID)
     {
       result = BLT_TRUE;
+      *len = ((blt_int8u)(CANx->sFIFOMailBox[0].RDTR)) & 0x0fu;
       /* store the received packet data */
       data[0] = (blt_int8u)0xFF & CANx->sFIFOMailBox[0].RDLR;
       data[1] = (blt_int8u)0xFF & (CANx->sFIFOMailBox[0].RDLR >> 8);
diff --git a/Target/Source/ARMCM4_STM32F4/uart.c b/Target/Source/ARMCM4_STM32F4/uart.c
index 708dad45..8c01ff3b 100644
--- a/Target/Source/ARMCM4_STM32F4/uart.c
+++ b/Target/Source/ARMCM4_STM32F4/uart.c
@@ -136,10 +136,11 @@ void UartTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UartReceivePacket(blt_int8u *data)
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -179,6 +180,8 @@ blt_bool UartReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/ARMCM4_STM32F4/usb.c b/Target/Source/ARMCM4_STM32F4/usb.c
index be78b32a..1ecfe3e9 100644
--- a/Target/Source/ARMCM4_STM32F4/usb.c
+++ b/Target/Source/ARMCM4_STM32F4/usb.c
@@ -172,10 +172,11 @@ void UsbTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UsbReceivePacket(blt_int8u *data)
+blt_bool UsbReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_USB_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -215,7 +216,8 @@ blt_bool UsbReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
-
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/ARMCM4_STM32L4/can.c b/Target/Source/ARMCM4_STM32L4/can.c
index afeddedc..9874d4ec 100644
--- a/Target/Source/ARMCM4_STM32L4/can.c
+++ b/Target/Source/ARMCM4_STM32L4/can.c
@@ -278,10 +278,11 @@ void CanTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE is a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool CanReceivePacket(blt_int8u *data)
+blt_bool CanReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   blt_int32u rxMsgId = BOOT_COM_CAN_RX_MSG_ID;
   blt_bool result = BLT_FALSE;
@@ -302,7 +303,7 @@ blt_bool CanReceivePacket(blt_int8u *data)
     }
     else
     {
-      /* negate the ID-type bit */
+      /* negate the ID-type bit. */
       rxMsgId &= ~0x80000000;
       /* was an 29-bit CAN message received that matches? */
       if ( (rxMsgHeader.ExtId == rxMsgId) &&
@@ -313,6 +314,11 @@ blt_bool CanReceivePacket(blt_int8u *data)
       }
     }
   }
+  /* store the data length. */
+  if (result == BLT_TRUE)
+  {
+    *len = rxMsgHeader.DLC;
+  }
   /* Give the result back to the caller. */
   return result;
 } /*** end of CanReceivePacket ***/
diff --git a/Target/Source/ARMCM4_STM32L4/uart.c b/Target/Source/ARMCM4_STM32L4/uart.c
index aa862728..d3d1d17b 100644
--- a/Target/Source/ARMCM4_STM32L4/uart.c
+++ b/Target/Source/ARMCM4_STM32L4/uart.c
@@ -133,10 +133,11 @@ void UartTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UartReceivePacket(blt_int8u *data)
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -176,6 +177,8 @@ blt_bool UartReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/ARMCM4_TM4C/uart.c b/Target/Source/ARMCM4_TM4C/uart.c
index eef56ecb..32818113 100644
--- a/Target/Source/ARMCM4_TM4C/uart.c
+++ b/Target/Source/ARMCM4_TM4C/uart.c
@@ -111,10 +111,11 @@ void UartTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UartReceivePacket(blt_int8u *data)
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -154,6 +155,8 @@ blt_bool UartReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/ARMCM4_TM4C/usb.c b/Target/Source/ARMCM4_TM4C/usb.c
index 4574fff2..8e85c91b 100644
--- a/Target/Source/ARMCM4_TM4C/usb.c
+++ b/Target/Source/ARMCM4_TM4C/usb.c
@@ -186,10 +186,11 @@ void UsbTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UsbReceivePacket(blt_int8u *data)
+blt_bool UsbReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_USB_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -229,7 +230,8 @@ blt_bool UsbReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
-
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/ARMCM4_XMC4/can.c b/Target/Source/ARMCM4_XMC4/can.c
index 2fe886cd..bd633930 100644
--- a/Target/Source/ARMCM4_XMC4/can.c
+++ b/Target/Source/ARMCM4_XMC4/can.c
@@ -245,10 +245,11 @@ void CanTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE is a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool CanReceivePacket(blt_int8u *data)
+blt_bool CanReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   blt_int8u byteIdx;
   blt_bool result = BLT_FALSE;
@@ -259,6 +260,7 @@ blt_bool CanReceivePacket(blt_int8u *data)
     /* read out and process the newly received data */
     if (XMC_CAN_MO_ReceiveData(&receiveMsgObj) == XMC_CAN_STATUS_SUCCESS)
     {
+      *len = receiveMsgObj.can_data_length;
       for (byteIdx=0; byteIdx<receiveMsgObj.can_data_length; byteIdx++)
       {
         data[byteIdx] = receiveMsgObj.can_data_byte[byteIdx];
diff --git a/Target/Source/ARMCM4_XMC4/uart.c b/Target/Source/ARMCM4_XMC4/uart.c
index 578f5543..a9403444 100644
--- a/Target/Source/ARMCM4_XMC4/uart.c
+++ b/Target/Source/ARMCM4_XMC4/uart.c
@@ -137,10 +137,11 @@ void UartTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UartReceivePacket(blt_int8u *data)
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -180,6 +181,8 @@ blt_bool UartReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/HCS12/can.c b/Target/Source/HCS12/can.c
index 353beaa3..bed9c50a 100644
--- a/Target/Source/HCS12/can.c
+++ b/Target/Source/HCS12/can.c
@@ -354,10 +354,11 @@ void CanTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE is a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool CanReceivePacket(blt_int8u *data)
+blt_bool CanReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   blt_int32u rxMsgId;
   blt_int8u  rxMsgLen;
@@ -391,6 +392,7 @@ blt_bool CanReceivePacket(blt_int8u *data)
       {
         data[byte_idx] = CAN->rxSlot.dsr[byte_idx];
       }
+      *len = rxMsgLen;
     }
     /* release the receive object by clearing the rx flag */
     CAN->crflg &= RXF_BIT;
diff --git a/Target/Source/HCS12/uart.c b/Target/Source/HCS12/uart.c
index 4360b013..500014c3 100644
--- a/Target/Source/HCS12/uart.c
+++ b/Target/Source/HCS12/uart.c
@@ -154,10 +154,11 @@ void UartTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UartReceivePacket(blt_int8u *data)
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -197,6 +198,8 @@ blt_bool UartReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/TRICORE_TC1798/uart.c b/Target/Source/TRICORE_TC1798/uart.c
index d3c90fba..d379bcb0 100644
--- a/Target/Source/TRICORE_TC1798/uart.c
+++ b/Target/Source/TRICORE_TC1798/uart.c
@@ -163,10 +163,11 @@ void UartTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool UartReceivePacket(blt_int8u *data)
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   static blt_int8u xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];  /* one extra for length */
   static blt_int8u xcpCtoRxLength;
@@ -206,6 +207,8 @@ blt_bool UartReceivePacket(blt_int8u *data)
         CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
         /* done with cto packet reception */
         xcpCtoRxInProgress = BLT_FALSE;
+        /* set the packet length */
+        *len = xcpCtoRxLength;
         /* packet reception complete */
         return BLT_TRUE;
       }
diff --git a/Target/Source/can.h b/Target/Source/can.h
index 84905258..d0920eed 100644
--- a/Target/Source/can.h
+++ b/Target/Source/can.h
@@ -34,7 +34,7 @@
 ****************************************************************************************/
 void     CanInit(void);
 void     CanTransmitPacket(blt_int8u *data, blt_int8u len);
-blt_bool CanReceivePacket(blt_int8u *data);
+blt_bool CanReceivePacket(blt_int8u *data, blt_int8u *len);
 #endif /* BOOT_COM_CAN_ENABLE > 0 */
 
 
diff --git a/Target/Source/com.c b/Target/Source/com.c
index 9a2f9912..90e98f07 100644
--- a/Target/Source/com.c
+++ b/Target/Source/com.c
@@ -97,43 +97,44 @@ void ComInit(void)
 ****************************************************************************************/
 void ComTask(void)
 {
+  blt_int8u xcpPacketLen;
   /* make xcpCtoReqPacket static for runtime efficiency */
   static blt_int8u xcpCtoReqPacket[BOOT_COM_RX_MAX_DATA];
 
 #if (BOOT_COM_CAN_ENABLE > 0)
-  if (CanReceivePacket(&xcpCtoReqPacket[0]) == BLT_TRUE)
+  if (CanReceivePacket(&xcpCtoReqPacket[0], &xcpPacketLen) == BLT_TRUE)
   {
     /* make this the active interface */
     comActiveInterface = COM_IF_CAN;
     /* process packet */
-    XcpPacketReceived(&xcpCtoReqPacket[0]);
+    XcpPacketReceived(&xcpCtoReqPacket[0], xcpPacketLen);
   }
 #endif
 #if (BOOT_COM_UART_ENABLE > 0)
-  if (UartReceivePacket(&xcpCtoReqPacket[0]) == BLT_TRUE)
+  if (UartReceivePacket(&xcpCtoReqPacket[0], &xcpPacketLen) == BLT_TRUE)
   {
     /* make this the active interface */
     comActiveInterface = COM_IF_UART;
     /* process packet */
-    XcpPacketReceived(&xcpCtoReqPacket[0]);
+    XcpPacketReceived(&xcpCtoReqPacket[0], xcpPacketLen);
   }
 #endif
 #if (BOOT_COM_USB_ENABLE > 0)
-  if (UsbReceivePacket(&xcpCtoReqPacket[0]) == BLT_TRUE)
+  if (UsbReceivePacket(&xcpCtoReqPacket[0], &xcpPacketLen) == BLT_TRUE)
   {
     /* make this the active interface */
     comActiveInterface = COM_IF_USB;
     /* process packet */
-    XcpPacketReceived(&xcpCtoReqPacket[0]);
+    XcpPacketReceived(&xcpCtoReqPacket[0], xcpPacketLen);
   }
 #endif
 #if (BOOT_COM_NET_ENABLE > 0)
-  if (NetReceivePacket(&xcpCtoReqPacket[0]) == BLT_TRUE)
+  if (NetReceivePacket(&xcpCtoReqPacket[0], &xcpPacketLen) == BLT_TRUE)
   {
     /* make this the active interface */
     comActiveInterface = COM_IF_NET;
     /* process packet */
-    XcpPacketReceived(&xcpCtoReqPacket[0]);
+    XcpPacketReceived(&xcpCtoReqPacket[0], xcpPacketLen);
   }
 #endif
 } /*** end of ComTask ***/
diff --git a/Target/Source/net.c b/Target/Source/net.c
index 62cc7ab1..7f32e2a2 100644
--- a/Target/Source/net.c
+++ b/Target/Source/net.c
@@ -171,10 +171,11 @@ void NetTransmitPacket(blt_int8u *data, blt_int8u len)
 /************************************************************************************//**
 ** \brief     Receives a communication interface packet if one is present.
 ** \param     data Pointer to byte array where the data is to be stored.
+** \param     len Pointer where the length of the packet is to be stored.
 ** \return    BLT_TRUE if a packet was received, BLT_FALSE otherwise.
 **
 ****************************************************************************************/
-blt_bool NetReceivePacket(blt_int8u *data)
+blt_bool NetReceivePacket(blt_int8u *data, blt_int8u *len)
 {
   /* run the TCP/IP server task function, which will handle the reception and
    * transmission of XCP packets
@@ -238,7 +239,7 @@ void NetApp(void)
     s->dto_len = 0;
     /* the first 4 bytes contain a counter value in which we are not really interested */
     newDataPtr = uip_appdata;
-    XcpPacketReceived(&newDataPtr[4]);
+    XcpPacketReceived(&newDataPtr[4], (blt_int8u)(uip_datalen() - 4));
   }
 } /*** end of NetApp ***/
 
diff --git a/Target/Source/net.h b/Target/Source/net.h
index d162d059..f6c35978 100644
--- a/Target/Source/net.h
+++ b/Target/Source/net.h
@@ -58,7 +58,7 @@ typedef struct net_state
 void     NetInit(void);
 void     NetApp(void);
 void     NetTransmitPacket(blt_int8u *data, blt_int8u len);
-blt_bool NetReceivePacket(blt_int8u *data);
+blt_bool NetReceivePacket(blt_int8u *data, blt_int8u *len);
 #else /* BOOT_COM_NET_ENABLE > 0 */
 
 typedef struct net_state
diff --git a/Target/Source/uart.h b/Target/Source/uart.h
index 649edc1e..f925cddd 100644
--- a/Target/Source/uart.h
+++ b/Target/Source/uart.h
@@ -34,7 +34,7 @@
 ****************************************************************************************/
 void     UartInit(void);
 void     UartTransmitPacket(blt_int8u *data, blt_int8u len);
-blt_bool UartReceivePacket(blt_int8u *data);
+blt_bool UartReceivePacket(blt_int8u *data, blt_int8u *len);
 #endif /* BOOT_COM_UART_ENABLE > 0 */
 
 
diff --git a/Target/Source/usb.h b/Target/Source/usb.h
index 6a00f090..803a1a6a 100644
--- a/Target/Source/usb.h
+++ b/Target/Source/usb.h
@@ -35,7 +35,7 @@
 void     UsbInit(void);
 void     UsbFree(void);
 void     UsbTransmitPacket(blt_int8u *data, blt_int8u len);
-blt_bool UsbReceivePacket(blt_int8u *data);
+blt_bool UsbReceivePacket(blt_int8u *data, blt_int8u *len);
 
 /****************************************************************************************
 * Hook functions
diff --git a/Target/Source/xcp.c b/Target/Source/xcp.c
index c26740a5..dca72dee 100644
--- a/Target/Source/xcp.c
+++ b/Target/Source/xcp.c
@@ -104,7 +104,7 @@ static void XcpCmdProgramPrepare(blt_int8u *data);
 * Hook functions
 ****************************************************************************************/
 #if (XCP_PACKET_RECEIVED_HOOK_EN == 1)
-extern blt_bool XcpPacketReceivedHook(blt_int8u *data);
+extern blt_bool XcpPacketReceivedHook(blt_int8u *data, blt_int8u len);
 #endif
 
 #if (XCP_RES_PAGING_EN == 1)
@@ -193,17 +193,22 @@ void XcpPacketTransmitted(void)
 /************************************************************************************//**
 ** \brief     Informs the core that a new packet was received by the transport layer.
 ** \param     data Pointer to byte buffer with packet data.
+** \param     len Number of bytes in the packet.
 ** \return    none
 **
 ****************************************************************************************/
-void XcpPacketReceived(blt_int8u *data)
+void XcpPacketReceived(blt_int8u *data, blt_int8u len)
 {
-#if (XCP_PACKET_RECEIVED_HOOK_EN == 1)
+
+#if (XCP_PACKET_RECEIVED_HOOK_EN == 0)
+  /* suppress compiler warning due to unused parameter. */
+  (void)len;
+#else
   /* give the hook function a chance to process this packet. A return value of BLT_TRUE
    * indicates that the hook function processed the packet and that no further processing
    * is required.
    */
-  if (XcpPacketReceivedHook(data) == BLT_TRUE)
+  if (XcpPacketReceivedHook(data, len) == BLT_TRUE)
   {
     /* packet processed by hook function so no need to continue. */
     return;
diff --git a/Target/Source/xcp.h b/Target/Source/xcp.h
index 01e9c98c..c56cded5 100644
--- a/Target/Source/xcp.h
+++ b/Target/Source/xcp.h
@@ -235,7 +235,7 @@
 void     XcpInit(void);
 blt_bool XcpIsConnected(void);
 void     XcpPacketTransmitted(void);
-void     XcpPacketReceived(blt_int8u *data);
+void     XcpPacketReceived(blt_int8u *data, blt_int8u len);
 
 
 /****************************************************************************************