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AM335x PRU CYCLE register

Hi,

I'm working on a BBB and i'm using the PRU to acquire data. I also use its cycle counter register. I can easily make it work (the counter) but i just  have noticed that it does not reset automatically when having reached its higher value :0xffffffff.

I've also noticed that my counter is disabled: i have tried to enable it, just like i've done at the very beginning of my program. It resets the counter but the counter is still not working ( its value is still at 0) .. the COUNTENABLE bit is also at 0.

So, here is my question: how can i do to reset  this cycle counter register? i really need to use the PRU more than only 21.47 seconds.

Thanks,

Best regards