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66AK2H12: Simultaneous core use and reliability

Elisha Tarroza71
Expert 3700 points
Part Number: 66AK2H12

Hello,

Is it possible to access ethernet on both dsp and arm simultaneously? Customer is asking if it's possible to get data from ARM core while writing the DSP core. 

Also, he is asking if is there some sort of reliability measurement for the communication between the ARM and DSP? He says he sometimes experiences that the interrupt does not register in ARM core.

Thank you!

  • 0
    TI__Guru** 114410 points

    Both ARM and DSP are master cores on the devices and they can access ethernet at the same time. However to avoid any complex race conditions, we recommend that application developers develop some mutex/semaphore based protocol to prevent any collision similar to usecases where cores access the same memory location in the shared memory model.

    Just to clarify can you indicate, if the usecase that you are describing requires you to receive data from the network using stack on the ARM but transmit data using the DSP, is that understanding correct ?  I have pinged the IPC experts to share information regarding measurement of performance of communication between ARM and DSP but all the measurements we have are based on the ARM Linux to DSP RTOS IPC stack we provide for these devices.

    Can you please described the software environment on both the cores ? aLso, please indicate if the customer has provided a IPC budget that the device is expected to meet.

    Regards,

    Rahul

  • 0 in reply to Rahul Prabhu
    TI__Expert 3700 points

    Hi Rahul,

    Thanks a lot for the response. I'm not certain if I can put the details here, will it be alright to send it to you by email or via private message?

  • 0 in reply to Elisha Tarroza71
    TI__Guru** 114410 points

    Elisha,

    Yes, feel free to reach out to me over email or private messaging if there are any concerns from the customer regarding sharing information on a public forum.

    Please mark the post as resolved and we can take this offline.

    Regards,

    Rahul