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How to get time precisely to milisecond or microsecond?

Long Ngoc
Intellectual 295 points

Hi,

It is said in document that RTC of C6748 only provides timer that update every second, how can I can get time that counts also milisecond or even microsecond in this board? In my opinion this should be possible.

Thank you,
Long 

  • 0
    Expert 1950 points

    Hello,

    What about using the Time Stamp Counter (TSC) register instead, with a resolution a one CPU cycle ?

    Jakez

  • 0 in reply to Jakez
    TI__Guru* 84110 points

    Long,

    Jakez' suggestion of the TSC is the absolute highest resolution count that you can get on the DSP.

    There are some slightly lower resolution timers that can also be used as time sources.

    The easiest way to get the millisecond level count is to use the SYS/BIOS Clock module. You can read about it in the SYS/BIOS documentation on the TI Wiki Pages and as part of CCSv5.

    Regards,
    RandyP