On Thu, Aug 17, 2017 at 4:10 PM, Zach <zwagne...@gmail.com> wrote:
> Hello there, I am attempting to activate UART pins on the BeagleBone Black
> with Ubuntu 16.04 kernel 4.4.68
>
> ubuntu@arm:~$ uname -a
> Linux arm 4.4.68-ti-r111 #1 SMP Wed Jun 28 13:40:31 UTC 2017 armv7l armv7l
> armv7l GNU/Linux
>
> I have tried editing the /boot/uEnv.txt file.
>
> cape_enable=bone_capemgr.enable_partno=BB-UART1
>
>
> I have tried
> echo BB-UART1 > /sys/devices/platform/bone_capemgr/slots
>
> Which causes the BBB to stall, I even let it sit for almost 2 hours once to
> no results.
>
> ubuntu@arm:~$ ls -l /dev/ttyO*
> lrwxrwxrwx 1 root root 5 Jul 14 14:48 /dev/ttyO0 -> ttyS0
> lrwxrwxrwx 1 root root 5 Jul 14 14:48 /dev/ttyO1 -> ttyS1
> lrwxrwxrwx 1 root root 5 Jul 14 14:48 /dev/ttyO2 -> ttyS2
> lrwxrwxrwx 1 root root 5 Jul 14 14:48 /dev/ttyO4 -> ttyS4
> ubuntu@arm:~$ ls -l /dev/ttyS*
> crw--w---- 1 root tty     4, 64 Jul 14 14:48 /dev/ttyS0
> crw-rw---- 1 root dialout 4, 65 Jul 14 14:48 /dev/ttyS1
> crw-rw---- 1 root dialout 4, 66 Jul 14 14:48 /dev/ttyS2
> crw-rw---- 1 root dialout 4, 67 Jul 14 14:48 /dev/ttyS3
> crw-rw---- 1 root dialout 4, 68 Jul 14 14:48 /dev/ttyS4
> crw-rw---- 1 root dialout 4, 69 Jul 14 14:48 /dev/ttyS5
>
>
>
> I have tried
> config-pin 911 uart
> config pin 913 uart
> ubuntu@arm:~$ config-pin -q 911
> P9_11 Mode: uart
> ubuntu@arm:~$ config-pin -q 913
> P9_13 Mode: uart

P9_11/P9_13 = ttyS4

So it 'should' work after running those two config-pin commands..

Regards,


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

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