Zephyr k_sem_take failed with err -11

RE: Zephyr k_sem_take failed with err -11

snowuyl — Wed, 19 Jul 2023 13:27:13 GMT

I can’t see log messages from net core. How can I check this issue?

RE: Zephyr k_sem_take failed with err -11

Priyanka — Wed, 19 Jul 2023 12:37:03 GMT

Assertion fail occurs when a condition is not true or cannot execute. Please check the line 329 of hci_core.c and try modifying it.

-Priyanka

RE: Zephyr k_sem_take failed with err -11

snowuyl — Tue, 18 Jul 2023 09:41:17 GMT

Why is assertion fail occurred?

RE: Zephyr k_sem_take failed with err -11

Priyanka — Tue, 18 Jul 2023 09:06:08 GMT

-Priyanka

RE: Zephyr k_sem_take failed with err -11

snowuyl — Tue, 18 Jul 2023 09:01:49 GMT

Thanks for your reply! There are three return values according API documentation for k_sem_take.

Return values

0	Semaphore taken.
-EBUSY	Returned without waiting.
-EAGAIN	Waiting period timed out, or the semaphore was reset during the waiting period.

RE: Zephyr k_sem_take failed with err -11

Priyanka — Tue, 18 Jul 2023 08:58:00 GMT

Please take a look at the API documentation for k_sem_take . It shows the return value is 0.

-Priyanka

RE: Zephyr k_sem_take failed with err -11

snowuyl — Mon, 17 Jul 2023 09:49:57 GMT

devzone.nordicsemi.com/.../8171.minimal_5F00_log_5F00_nus.zip

RE: Zephyr k_sem_take failed with err -11

snowuyl — Mon, 17 Jul 2023 09:49:43 GMT

Procedure to reproduce this issue is as follows.

1. Unzipping minimal_log_nus.zip
1. cd D:\ncs\v2.3.0\nrf\samples\minimal_log_nus
2. west build -b nrf5340dk_nrf5340_cpuapp
3. west flash --recover
4. Launching RTT Viewer and booting nRF5340 board.
5. RTT Viewer shows "ASSERTION FAIL [err == 0] @ WEST_TOPDIR/zephyr/subsys/bluetooth/host/hci_core.c:329"