• State
  • +1 person also asked this people also asked this
  • Locked Locked
  • Replies 4 replies
  • Subscribers 33 subscribers
  • Views 157 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.

AM2432: Timer Callback without Interrupt

Kevin Peng
Expert 4178 points
Part Number: AM2432


Tool/software:

Hi TI Experts,

Customer is working on AM2432 SDK9.2.

As we know normally the timer callback needs to function together with interrupt mode enabled. Customer is asking if they do not enable the interrupt mode, when the timeout happens will the timer still trigger the timer callback function or not?

If the answer is no, is there any other flag bit could tell us the timeout happens? 

We could not find a timer example in the SDK, could you also suggest an example of timer for customer to follow please?

Thanks,

Kevin

  • 0
    TI__Guru 50407 points

    Hi Kevin,

    Kevin Peng said:
    We could not find a timer example in the SDK, could you also suggest an example of timer for customer to follow please?

    This example does not exist at the moment.

    I can let another expert comment on this, he can also provide with a sample application for this.

    Regards,

    Vaibhav

  • 0 in reply to Vaibhav Kumar
    TI__Expert 4178 points

    Hi Vaibhav, Anil,

    Thank you.

    Let me make it more clear, there are actually two questions in this thread.

    1: An example of timer.

    2: Is timer callback function could be triggered without enabling interrupt mode, if not, do we have any other flag bit could tell us the timeout happens.

    Thanks,

    Kevin

  • 0 in reply to Vaibhav Kumar
    Genius 4132 points

    Hi Vaibhav:

     Same timer example request should also be ported in the AM64x MCU+ SDK - sometime after v 11.0 please?

    Jim

  • 0 in reply to Jim Mrowca
    TI__Guru 50587 points

    Hello Kevin

    The user call back support is valid in the Interrupt mode. 

    If the user wants to go with the polling Model, user needs to check whether the timer is overflowing or not.

    The below example snippet works for your use case.

    The Timer example is already available in the MCU+SDK 10.1.

    Please look at the paths below.

    C:\ti\mcu_plus_sdk_am64x_10_01_00_32\examples\drivers\timer\timer_interrupt

    C:\ti\mcu_plus_sdk_am64x_10_01_00_32\examples\drivers\gp_timer

        uint32_t status =0 ;

    while(1)
    {
         status = TimerP_isOverflowed(gTimerBaseAddr[CONFIG_TIMER0] );
         if(status)
         {
             TimerP_clearOverflowInt(gTimerBaseAddr[CONFIG_TIMER0] );

         }


    }

    Regards,

    Anil.