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Emulator connection

Gene9467
Prodigy 10 points

Hi all,

I want to protect my software from the reverse engineering. So I have a question:

How can a running program determine if a JTAG emulator is connected to the C5510 DSP?

Can anybody help me? Thanks in advance.

 

  • TI__Prodigy 575 points

    One way to do this would be to monitor the TRST (test reset) pin. TRST is normally low and high when an emulator is connected.

    This could be sensed via a GPIO input pin connected to TRST and your program check the GPIO pin.

    Note that someone could cut the connection betwenn the TRST and GPIO pin to disable detection by the program.

    Regards,
    Harry