On Thu, Apr 28, 2016 at 1:56 AM, florian.feldbauer85 via BeagleBoard < [email protected]> wrote:
> Hey, > > I had a look at the kernel source at github. From the code > I would say the 8250 driver supports RS485. Only the > "rs485-rts-active-high" flag from the device tree overlay > seems not to be supported. But the same setting can be done via the struct > serial_rs485 from user space. > > Also RS485 seems to be working to a limited point. > Again: The only problem is receiving messages, which seems for what ever > reason to be limited to 49 bytes. > If my kernel is not supporting RS485 I would expect that either sending or > receiving is not working at all. > But from all the Pictures I linked in my previous mails, you can see, that > the 8250 driver is switching the > RTS signal with the correct polarity. > > Can someone point to to the kernel source for the kernel I am using > (4.4.6-ti-r15)? > Grab https://github.com/RobertCNelson/yakbuild follow the readme.. For 4.4.6-ti-r15, select: toolchain="gcc_linaro_gnueabihf_5" kernel_tag="4.4.6-ti-r15" source: https://github.com/RobertCNelson/linux-stable-rcn-ee/tree/4.4.6-ti-r15 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/CAOCHtYg%3DS%3DRkP3akybDx9zJwC3r%3DQ35_99tnz%3DeaL_dVrsszRA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
