BT controller fails [evdone]

[J Boumans]

Hey,

I'm developing and upgrading a BT mesh to Zephyr 2.7.99 and the base functions work, but my Node keep crashing and I don't know from where. It gives the following error statements:

[00:06:10.336,273] <dbg> bt_mesh_access.bt_mesh_model_publish:
[00:06:10.336,303] <dbg> bt_mesh_access.bt_mesh_model_publish: Publish Retransmit Count 2 Interval 100ms
[00:06:10.343,750] <dbg> bt_mesh_access.mod_publish:
[00:06:10.345,489] <dbg> bt_mesh_access.bt_mesh_model_recv: app_idx 0x0000 src 0x000d dst 0xc000
[00:06:10.345,489] <dbg> bt_mesh_access.bt_mesh_model_recv: len 25: 52101c0020101d002043253a00443e2b02010301fdc1e5f361
[00:06:10.345,520] <dbg> bt_mesh_access.bt_mesh_model_recv: OpCode 0x00000052
[00:06:10.345,550] <dbg> bt_mesh_access.bt_mesh_model_recv: No OpCode 0x00000052 for elem 0
ASSERTION FAIL [evdone] @ WEST_TOPDIR/zephyr/subsys/bluetooth/controller/ll_sw/nordic/lll/lll.c:364
[00:06:14.708,526] <dbg> bt_mesh_access.publish_sent: err 0
[00:06:14.708,557] <dbg> bt_mesh_access.publish_sent: Publishing next time in 100ms
[00:06:14.908,477] <dbg> bt_mesh_access.mod_publish:
[00:06:14.910,217] <dbg> bt_mesh_access.bt_mesh_model_recv: app_idx 0x0000 src 0x000d dst 0xc000
[00:06:14.910,247] <dbg> bt_mesh_access.bt_mesh_model_recv: len 25: 52101c0020101d002043253a00443e290201030107ee9bf1ee
[00:06:14.910,247] <dbg> bt_mesh_access.bt_mesh_model_recv: OpCode 0x00000052
[00:06:14.910,278] <dbg> bt_mesh_access.bt_mesh_model_recv: No OpCode 0x00000052 for elem 0
[00:06:15.148,254] <err> os: r0/a1:  0x00000003  r1/a2:  0x0002c7d4  r2/a3:  0x00000001
[00:06:15.148,284] <err> os: r3/a4:  0x0001e855 r12/ip:  0xa0000000 r14/lr:  0x0001bc33
[00:06:15.148,284] <err> os:  xpsr:  0x41000011
[00:06:15.148,284] <err> os: Faulting instruction address (r15/pc): 0x0001bc3e
[00:06:15.148,284] <err> os: >>> ZEPHYR FATAL ERROR 3: Kernel oops on CPU 0
[00:06:15.148,315] <err> os: Fault during interrupt handling

[00:06:15.148,315] <err> os: Current thread: 0x20001c10 (unknown)
[00:06:15.279,205] <err> os: Halting system

I have no idea what to do with these errors and where to start. I hope someone can help me here.

Thanks in advance!

[Hayden Ball]

Having done a bit more research...

This issue has been resolved upstream in https://github.com/zephyrproject-rtos/zephyr/commit/072c8f2c683b06ea6d9cd42ea5e2df5b88d907db

We've found a sensible workaround until that is merged is to set `VENDOR_EVENT_DONE_MAX` to 5.

This can be done in CMakeLists.txt.

-zephyr_compile_definitions(PROJECT_NAME=${PROJECT_NAME})
+zephyr_compile_definitions(PROJECT_NAME=${PROJECT_NAME} VENDOR_EVENT_DONE_MAX=5)