• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 40 subscribers
  • Views 407 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Microseconds since startup.

Shawn Bero
Intellectual 290 points
Other Parts Discussed in Thread: CC3200, CC3200SDK

Hello, 

I am writing my own protocols in transceiver mode on the cc3200. Since this protocol uses some of the implementation from 802.11 I need to be able to keep some sort of 64 bit count of microseconds since my system has started.

If I can find a way to current clock ticks I can do the math to determine microseconds even if it is stored in a 32 bit value. Is there a way to read raw clock ticks?

I also noticed that the message header in transceiver mode gives me a time value of when the message was receieved. I can't really use that until I can find the time value that it was based off of. Is there a way to read the current time from the transceiver?

Thanks for your help

Shawn

  • 0
    TI__Mastermind 30760 points

    Hi Shawn,

    Depending on what your application needs to do, you could consider using the RTC or just a general purpose timer for this. If those will not work, it is possible to read clock ticks from the SysTick timer. Take a look at the Peripheral Driver Library User's Guide in the SDK for details on accessing the SysTick counter (CC3200SDK_1.2.0/cc3200-sdk/docs/CC3200-Peripheral_Driver_Libraray_User's_Guide.chm).

    Note that it is a 24-bit counter and runs off of 80MHz clock. For additional information check out the CC3200 Technical Reference Manual.

    Best Regards,

    Ben

    (Edit: You should also take a look at the sl_DevGet() SimpleLink API for reading the time maintained by the NWP)

  • 0 in reply to Benjamin Moore
    Intellectual 290 points

    Hello Benjamin,

    Thanks for the info. I haven't had a chance to look at your information but I think you answered my questions accurately.

    Thanks for your help

    Shawn