Enoch:
I am confused about your problem.
I am running the March 1 jessie snapshot.
I am using UART4 to talk to a GPS.
In this case, UART4 appears on ttyO4.
It works fine, and Termios is also happy.
You do have to create a custom ".dtb" using Robert Nelson's dtb-rebuilder to
both enable the driver and remap the pin-mux, so that the UART4 is 
connected to
the P9-11 and P9-13.

Have you created the necessary ".dtb" ?

--- Graham

==

On Wednesday, March 11, 2015 at 11:02:58 PM UTC-5, Enoch wrote:
>
> Hi Robert, 
>
> Sorry, this created /dev/ttyS4 indeed but it does not seem to work. 
> I also checked for echo by shorting UART4 RXD P9-11 to TXD P9-13. 
>                                 and UART1 RXD P9-26 to TXD P9-24. 
>
> TIA, Regards, Enoch. 
>
>
> Robert Nelson <robert...@gmail.com <javascript:>> 
> writes: 
>
> > On Wed, Mar 11, 2015 at 5:53 PM, Enoch <ix...@hotmail.com <javascript:>> 
> wrote: 
> >> Now please excuse my ignorance... how to collect the binary from the 
> >> "buildslave" machine? 
> > 
> > http://builds.beagleboard.org/linux/8.html 
> > 
> > but my builds are done.. 
> > 
> > http://rcn-ee.homeip.net:81/farm/deb/ 
> > 
> > and rsync is running... So give a it a few minutes.. ;) 
> > 
> > Regards, 
> > 
> > -- 
> > Robert Nelson 
> > http://www.rcn-ee.com/ 
>
>

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