I have the same question.

I'm using the PRU's 200 MHz cycle counter to timestamp sensor measurements. 
At 200 MHz, this 32-bit counter overflows in 20 seconds. I would like to 
notify a C program running on the 1GHz host ARM processor as soon as it 
overflows.

*Is it possible to configure the PRU cycle counter to trigger an interrupt 
in the host ARM when it overflows?*

I know how to write PRU code to make the PRU trigger an interrupt in the 
host, but that's not quite what I want, since my PRU will be busy doing 
other things. I would like the cycle counter to trigger an interrupt 
automatically, without the PRU having to check if it has overflowed.

Many thanks!
-Justin





On Saturday, December 17, 2016 at 3:06:08 PM UTC-8, Amr Alanwar wrote:
>
> HI All
>
> Is there a way to get an interrupt when there is PRU cycle counter 
> overflow ?
>
> Thanks
>

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