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GEL expression to read/reset CPU clock in CCS4

Elias Kokkinis
Intellectual 505 points

Hello all,

I am using CCS v4.1.3 and I am developing on a C5515 eZdsp.

I am profiling some functions with the use of the CPU clock tool, measuring CPU cycles. Currently I am doing this manually with the use of breakpoints.

Is there a way to automate this using GEL expressions? From what I have seen breakpoints can either start/stop profiling and execute GEL expressions. Is there a GEL expression to read the CPU cycle value, store it somewhere and reset the clock counter?

I know that I could be doing this using the profiler, but for the actual hardware the profiler is really slow and have a lot more information than I need. So I was thinking of using the simple tool and automate it.

Thanks,

Elias

  • 0
    TI__Guru**** 450411 points

    You can enable/disable the profile clock with GEL_EnableClock()

    Pass in "1" to enable and "0" to disable

    GEL_EnableClock(1);     // Enable clock

    GEL_EnableClock(0);     // Disable clock

    Read the clock by simply evaluating the CLK pseudo-register (note that CLK stores a 32-bit value)

    reset it by setting CLK to '0'

    CLK = 0;

    Thanks

    ki