On Tue, Mar 24, 2020 at 10:01 PM Michael Ascenzi <[email protected]> wrote:
> so looking at the BBB documentation > > [image: hdmi.jpg] > so these are just the supported resolutions for the BBB correct? > You added the word "just".. That's untrue... In the documentation that is a list of "standard" supported monitor resolutions. > > In my case, the EVM would have its default resolution associated with it, > which is what the BBB would be set to. Correct? > The DLP2000, is 640x360 as specified in the display-timings configuration: https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/DLPDLCR2000-00A0.dts#L228-L242 > Would changing the resolution via Xrandr have any affect on the image > transfer rate from the BBB to the EVM? I don't have access to the BBB & EVM > at the moment. At the office. or else I would try it. I'll try to head > into the office tomorrow. > No, it has a fixed resolution. > > Speaking with the guys over at TI, the EVM is set to a default rate of > 60hz based on the data being piped over the parallel video input. They say > that the EVM will update at 60hz, but the week link is the speed at which > the BBB can load and push the image files over the parrallel video input. > > right now we have an oscilloscope connected to the vsync pin of the gpio > on the BBB. Which is part of the parrellel video input. We assumed that > the BBB was working at 24hz cause of what we were seeing on the scope. This > is our suspicion because when we measured VSYNC directly on the beagle > using the P8 expansion header (pin 27 lcd_vsync) and an oscilloscope we > measured 23.6 Hz (basically round up and its 24 Hz). > > Any thoughts? > Regards, -- Robert Nelson https://rcn-ee.com/ -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYiSXimzfn0U0WPgGah8YUtVL5P%2BKEnmpOQrj3srzGMGow%40mail.gmail.com.
