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Which timers on 6634K2H can be shared?

David Aldrich92784
Genius 3720 points

Other Parts Discussed in Thread: SYSBIOS, TCI6636K2H

Hi

1) How can I find out which timers on the 6634K2H device can be shared please?

2) Also, how can I find out which shared timers are unallocated?

3) I believe it is possible to set the owner of a shared timer, statically in the .cfg file:

  var Timer = xdc.useModule('ti.sysbios.timers.timer64.Timer');
 
  // sets core 1 to init and release Timer 4.
  Timer.timerSettings[4].ownerCoreId = 1;

Is it possible to do this dynamically using C code?

Best regards

David

  • 0
    TI__Mastermind 32475 points

    David,

    First you said 6634K2H.  I wasn't sure which device this is.  There's a TCI6636K2H and a TCI6634, but I'm not sure about a 6634K2H?

    1.  Typically on these devices, if you have 8 DSP cores then the first 8 timers are local timers and the next 8 timers are shared timers.  So Timer IDs 0-7 would be local and 8-15 would be shared.  For 4 DSP cores, cut the number of local timers and shared timers in 1/2.

    2.  All Shared Timers are unallocated by BIOS.  BIOS uses one half of the local timer.

    3.  It is not possible to set the owner id of a shared timer at runtime currently.  Could be a possible enhancement in the future but we just need to analyze the implications of doing this.

    Judah