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TMS320F2800157: CAN Communication between f2800157 and APSoC zc702 board

Gowtham SM
Prodigy 10 points
Part Number: TMS320F2800157

Tool/software:

Hi

i need to make communication between f2800157 microcontroller and zynq zc702 APSoC through CAN.

connection
     can_h (ti) to can_h(apsoc)
    can_l (ti) to can_l(apsoc)
    gnd to gnd

Whether this connection is correct?
i just need to verify the CAN is working is working or not between this.

so in ti i will run the example loopback.c and in apsoc i will use  canopen to send, or see the incoming data's through can

  • 0
    TI__Mastermind 34215 points

    Hi Gowtham,

    Searching for zync zc702 APSoc that you specified above, it seems like this is an EVM and not a CAN analyzer/scope.  When connecting CAN nodes, these have to be done through a transceiver.  Signal levels for f2800157 communication is at 3.3V domain.  The EVM you have specified may not have the same signal level as the f2800157 device so best to use a transceiver to link the f2800157x node.  See the Introduction section of app note https://www.ti.com/lit/pdf/sprace5 for some details.

    Regards,

    Joseph

  • +1 in reply to Joseph Casuga
    Prodigy 10 points

    Hi 

    In zc702 board it has internally connected CAN transceiver.

    1. And the TI microcontroller also have Transceiver inbuilt 

    How I should proceed now

  • 0 in reply to Gowtham SM
    TI__Mastermind 34215 points

    Hi,

    Just connect the CANL of the ZC702 to the CANL of the TI microcontroller and the CANH of the ZC702 with the CANH of the TI microcontroller.  There should be a 120-ohm termination resistor between CANL and CANH if there are transceivers on both sides.

    Regards,

    Joseph