Hello, I've also faced the same issue.
Even though I tried editing the /boot/uEnv.txt file, I cannot enable uart cape_enable=bone_capemgr.enable_partno=BB-UART2 I had to use config-pin P9_21 uart config-pin P9_22 uart to enable my uart2 channel. @Zach : Please try the same and let me know. I don't know if it will work in Ubuntu. @Robert or anyone else, why enabling uart in uEnv.txt is not successful always? On Friday, 18 August 2017 02:51:05 UTC+5:30, Zach 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 > > But still no data being transferred. My end goal is to use ROS with a > PixHawk for drone flights. Any help would be greatly appreciated. > > > -- 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 beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/04c14572-ce48-426b-b3ef-b3f6772c1eae%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
