Hi,
I’m trying to get the IO ports working on a BeagleBone running the latest resinOS (2.15.1+rev1). I’m trying to use the Bonescript library in a NodeJS runtime on the resin/beaglebone-black-node:8 base image.
I want to enable and use UART4, which does not work out of the box. I need to enable it with some command in my Dockerfile/starter script. I tried to follow the solution listed here but am encountering errors.
Whenever I run echo BB-UART4 > slots, a ton of journal errors are spit out at me. Relevant ones are below:
root@14f4739:/sys/devices/platform/bone_capemgr# echo BB-UART4 > slots
Broadcast message from systemd-journald@14f4739 (Wed 2018-10-17 23:21:59 UTC):
kernel[544]: [ 463.501752] Internal error: Oops: 17 [#1] PREEMPT SMP ARM
Broadcast message from systemd-journald@14f4739 (Wed 2018-10-17 23:21:59 UTC):
kernel[544]: [ 463.606348] Process bash (pid: 1425, stack limit = 0xd182e218)
When I inspect dmesg to see what happened, I see the following error(s):
[ 463.415231] bone_capemgr bone_capemgr: part_number 'BB-UART4', version 'N/A'
[ 463.434656] bone_capemgr bone_capemgr: slot #4: override
[ 463.444639] bone_capemgr bone_capemgr: Using override eeprom data at slot 4
[ 463.458779] bone_capemgr bone_capemgr: slot #4: 'Override Board Name,00A0,Override Manuf,BB-UART4'
[ 463.475911] Unable to handle kernel NULL pointer dereference at virtual address 0000000c
[ 463.485388] pgd = da670000
[ 463.492973] [0000000c] *pgd=9a561831, *pte=00000000, *ppte=00000000
[ 463.501752] Internal error: Oops: 17 [#1] PREEMPT SMP ARM
This is in contrast to what should be in dmesg based on the post linked above.
So, I am stuck. This would seem to be an incompatibility with the kernel itself. Any help is greatly appreciated!