On Sun, Jan 29, 2017 at 12:50 PM, Harke Smits <[email protected]> wrote:
> Hello Dennis,
>
> That is a very relevant reaction! Thanks a lot! Now I have to find out what
> port is connected with UART 2 (and others I need....). I found ttyO0 and
> ttyO3 working, i.e. no errors reported. But also no idea to what UART they
> are connected. Definitely not UART2, I am using.
> Apart from the fact that I cannot believe that someone deliberately messed
> up with the serial ports..... Compatibility with earlier scripts is
> completely gone!
> Can anyone supply me with the altest UART mapping? Or better yet: re-install
> the old mapping?

Well, userspace changed from: /dev/ttyOx -> /dev/ttySx, by default we
have a udev rule setup to allow you to use /dev/ttyOx

However if you are loading a device tree overlay from the 3.8.13 era,
you need to update the device tree node name.

for example usart 2: (today)

https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/BB-UART2-00A0.dts#L47

usart2 (yesterday with 3.8.13)

https://github.com/beagleboard/linux/blob/3.8/firmware/capes/BB-UART2-00A0.dts#L41

As you might have other issues causing the blockage, please add the output off

dmesg | grep bone

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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