AnsweredAssumed Answered

MPC5634M how to set CAN ID?

Question asked by Kritsanasak Wuttisuwapap on Mar 3, 2016
Latest reply on Mar 7, 2016 by Kritsanasak Wuttisuwapap

Hi. I used MPC5634M.


I  want to set CAN ID to 0x1806E5F4. But, I can set CAN ID up to 0xFFF.




Function Name : TransmitMsg

Engineer      : stnp002

Date          : Mar-21-2012

Parameters    : NONE

Modifies      : NONE

Returns       : NONE

Notes         : FlexCANA simple transmit. per AN2865

Issues        : NONE


static void TransmitMsg(void)   //TransmitMsg


  uint8_t i;  

                                       //Assumption:  Message buffer CODE is INACTIVE 

  const uint32_t TxData[8] = {0x02,0x88,0x03,0xE8,0x00,0x00,0x00,0x00};  //Transmit hex

  CAN_A.BUF[0].CS.B.IDE = 0;           //Use standard ID length

  CAN_A.BUF[0].ID.B.STD_ID = 0x1806E5F4;     //Transmit ID

  CAN_A.BUF[0].CS.B.RTR = 0;           //Data frame, not remote Tx request frame

  //CAN_A.BUF[0].CS.B.LENGTH = sizeof(TxData) -1 ;  //# bytes to transmit w/o null

  CAN_A.BUF[0].CS.B.LENGTH = 8 ;  //# bytes to transmit w/o null

  //for (i=0; i<sizeof(TxData); i++)

  for (i=0; i<8; i++)


    CAN_A.BUF[0].DATA.B[i] = TxData[i]; //Data to be transmitted


  CAN_A.BUF[0].CS.B.SRR = 1;            //Tx frame (not req'd for standard frame)

  CAN_A.BUF[0].CS.B.CODE =0xC;          //Activate msg. buf. to transmit data frame



in "CAN_A.BUF[0].ID.B.STD_ID", it can set CAN ID up to 0xFFF.