问下如果CAN的引脚改为J18及K15，为什么一直调试不通啊？

问下如果CAN的引脚改为J18及K15，

DCANPinMuxSetUp（）改为如下代码，有什么问题？一直调试不同（没改之前用是好的）

unsignedintDCANPinMuxSetUp(unsigned intinstanceNum)

{

unsignedint profile = 1;

unsignedint status = FALSE;

    //if(1 != instanceNum)

    {

    }

    //profile = EVMProfileGet();

if(1 == profile)

    {

////        /* Pin Mux for DCAN0 Tx Pin */

////        HWREG(SOC_CONTROL_REGS + CONTROL_CONF_UART_CTSN(instanceNum)) =

////                  DCAN_SLEWFAST_RXDISABLED_PULLDWN_PUPDENABLED_MODE2;

////

////        /* Pin Mux for DCAN0 Rx Pin */

////        HWREG(SOC_CONTROL_REGS + CONTROL_CONF_UART_RTSN(instanceNum)) =

////                  DCAN_SLEWFAST_RXENABLED_PULLUP_PUPDENABLED_MODE2;

          /* Pin Mux for DCAN0 Tx Pin */

HWREG(SOC_CONTROL_REGS + CONTROL_CONF_MII1_TXD3) =

                  DCAN_SLEWFAST_RXDISABLED_PULLDWN_PUPDENABLED_MODE2;

        /* Pin Mux for DCAN0 Rx Pin */

HWREG(SOC_CONTROL_REGS + CONTROL_CONF_MII1_TXD2) =

                  DCAN_SLEWFAST_RXENABLED_PULLUP_PUPDENABLED_MODE2;

status = TRUE;

    }

return status;

}