I'm guessing that you figured this out already or don't care any more. But in case you were wondering, you can use the GPIO pins, google around for this and there's the "interrupt method". Maybe the easiest if you don't mind 10bit resolution would be to use the PWM with an optocoupler, like the LED dimming example. Then you could go right to the analog in pin. I guess it really depends on how fast you need to do it. 10 bit is 1024...so that would give you about... 800-20=780; 780/1024 = 0.76kHz per step.
Cheers, Bruce On Wednesday, July 4, 2012 12:26:01 PM UTC-4, Jeshwanth wrote: > > Hello All, > > I have a PWM signal which is going to give input to beaglebone, the > frequency starts from 20kHz to 800kHz. What is the method I can use to > calculate the frequency ?? > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
