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CAN baudrate configuration

arun kumar93
Expert 1060 points
Other Parts Discussed in Thread: HALCOGEN

hi, 

i dont know how to configure that CAN for different baudrate.

i need how to calculate CAN bit time calculations for TMS470MF066HDK.

thanks 

arun

  • 0
    TI__Guru 72500 points

    If you use HALCoGen, you just enter the desired baudrate (in KB/s) in the first box.

    The details are given in section 10.14 of SPNU495.

  • 0 in reply to Bob Crosby
    Expert 1060 points

    once i make my code at 500kbps means, at run time how can i change my CAN baudrate  at 125kbps or 1mbps.

    is it possible to change like this.

    thanks

    arun

  • 0 in reply to arun kumar93
    TI__Guru 72500 points
    It is possible to change the baud rate by reconfiguring the CAN module. Are you sure you want to do that? CAN busses are not tolerant of having devices use different baud rates on the same bus. All devices on the bus would have to stop talking, change to the new baud rate and then start again.

    The simplest way to do this is to create a dummy HALCoGen project and in the dummy project configure the CAN module to the new baud rate. Then copy the canInit() function from the dummy project can.c file. Then paste it into your own file in the original project and change the function name.