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CC2650 short pulse capture

Robb S
Expert 3120 points
Other Parts Discussed in Thread: CC2650

Is there an efficient method to capture a short pulse (~100ns) on a GPIO using a CC2650 timer.  Specifically in conjunction to running TI RTOS.

What specific timers are utilized when running TI RTOS that must be avoided? Are there any capture limitations when running the BLE Stack?

Thanks,

Robb

  • 0
    TI__Mastermind 29650 points
    Robb,

    Not really sure what you intend to do here, could you elaborate?
    TI RTOS needs channel 0 of the RTC and the BLE stack needs the radio timers, except for that all timers are available for the application.
    I -think- 100ns is a it to short and seem to recall you need 150ns minimum here.

    You can do a capture of a pulse with a timer using the edge detect event as the trigger. You can do a capture using both the 32.768kHz RTC or a GPTimer.

    Note that we currently don't have a GPTimer driver available for TI RTOS but we are working on it so using them to do a capture right now is a bit complicated.

    .:svend
  • 0 in reply to svendbt
    TI__Mastermind 29650 points
    Hi Robb,

    Is this the same case as discussed on this thread: e2e.ti.com/.../1503371 ?
    If not then you can find details there :)

    Regards,
    Svend