diff --git a/bspMCU/bsp_CAN.c b/bspMCU/bsp_CAN.c
index 820b7f7..2c4e9ed 100644
--- a/bspMCU/bsp_CAN.c
+++ b/bspMCU/bsp_CAN.c
@@ -115,7 +115,7 @@ void CAN_RX_IRQHandler(TComCtrl *_ptComCtrl)
     if (HAL_FDCAN_GetRxMessage(ptCANUserData->m_can, FDCAN_RX_FIFO0, ptCANUserData->m_canrx, ptCANUserData->m_temp) == HAL_OK)
 	{
 		// FD_CAN_1_Handler.ReceivedFrameID = (uint32_t) CAN_RX_HDR.Identifier;
-#if NewCANSendVersion
+#if CONFIG_CAN_NEW_VERSION
 		uint32_t iRxLen = (uint32_t) ptCANUserData->m_canrx->DataLength;
 #else
 		uint32_t iRxLen = (uint32_t) ptCANUserData->m_canrx->DataLength>>16;
@@ -132,7 +132,7 @@ int CAN_TX_FIFOQ(TComCtrl *_ptComCtrl, uint32_t _iFrameID, char *_pBuffer, uint3
     TCANUserData *ptCANUserData = (TCANUserData *)_ptComCtrl->m_pUserData;
     ptCANUserData->m_cantx->BitRateSwitch = FDCAN_BRS_OFF;
 
-#if NewCANSendVersion
+#if CONFIG_CAN_NEW_VERSION
 	ptCANUserData->m_cantx->DataLength = (uint32_t) _iSize;
 #else
 	ptCANUserData->m_cantx->DataLength = (uint32_t) _iSize << 16; //数据长度大于8的话会有错误
diff --git a/bspMCU/include/bsp_CAN.h b/bspMCU/include/bsp_CAN.h
index c76e60d..57c8670 100644
--- a/bspMCU/include/bsp_CAN.h
+++ b/bspMCU/include/bsp_CAN.h
@@ -69,7 +69,10 @@ extern "C"{
 /*==============================================*
  *      constants or macros define              *
  *----------------------------------------------*/
-#define NewCANSendVersion 0
+
+#ifndef CONFIG_CAN_NEW_VERSION
+#define CONFIG_CAN_NEW_VERSION 0
+#endif
 
 typedef struct
 {    
diff --git a/library/common/common_cfg.h.in b/library/common/common_cfg.h.in
index 9b6d2d9..5408426 100644
--- a/library/common/common_cfg.h.in
+++ b/library/common/common_cfg.h.in
@@ -11,6 +11,7 @@ extern "C"{
 #endif /* __cplusplus */
 
 #cmakedefine MEM_POOL_TOTAL_SIZE @MEM_POOL_TOTAL_SIZE@
+#cmakedefine CONFIG_CAN_NEW_VERSION @CONFIG_CAN_NEW_VERSION@
 
 #cmakedefine IOC_100PIN 
 #cmakedefine USE_TALNET