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CAN BOXMESSAGE

Marcin Kawalec
Prodigy 130 points
Other Parts Discussed in Thread: TMS570LS1224

Hello!

I have been working with TMS570LS1224 and CAN-BUS. I know that datasheet expected only 64 messages with assigned ID for CAN register. But I want to receive all ID's and filtrate/mapping its myself. I want to make listener of CAN messages. How to take off arbiter ? How to listen all messages regardless of the ID.

Best Regards

Marcin

  • 0
    TI__Guru**** 198996 points
    Hi Marcin,

    If you want to receive all the messages, you can clear the UMask bit in IFxMCTL register. or change the Mask bits in IFxMSK register to “don’t care”.

    Regards,
    QJ
  • 0 in reply to QJ Wang
    Prodigy 130 points

    I set:

        canREG1->IF2MSK  = 0x00000000U;              // ""dont care"
        canREG1->IF2ARB  = (uint32)0x80000000U | (uint32)0x00000000U | (uint32)0x00000000U | (uint32)((uint32)((uint32)0x111U & (uint32)0x000007FFU) << (uint32)18U);
        canREG1->IF2MCTL = 0x00001080U | (uint32)0x00000400U | (uint32)0x00000000U | (uint32)8U;
        canREG1->IF2MCTL &= ~(1<<12);                  // Clear UMASK bit
        canREG1->IF2CMD  = (uint8) 0xF8U;
        canREG1->IF2NO   = 2U;

    Is it properly ?

  • 0 in reply to Marcin Kawalec
    Prodigy 130 points
    But what I want ... In one MessageBox i want to receive all messages without putting ID with I want to receive.