ble_app_cli example cannot reconnect if set log_backend to false

[zzt]

Hi, Nordic team,

I was developing an app using ble_cli module refering to the ble_app_cli example from SDK 17.02 on a custom board.  If I set log_backend to false in 'nrf_cli_init', then when the NRF CONNECT app disconnected, the board stop running and cannot be reconnected.

I tried to use PCA10056 and official ble_app_cli  demo, it had the same result. It seems to relate to the nrf_cli_uninit function because if I comment this line, the board could be reconnected. 

I don't want the log to be sent to ble backend, please help.

Thanks in advance.

[Kenneth]

If I set log_backend to false in 'nrf_cli_init', then when the NRF CONNECT app disconnected, the board stop running and cannot be reconnected.

Sounds very much like an assert, and the app_error_fault_handler() is by default setup to reset on error. Please check out the following blog post on how to build with DEBUG so that it can output the line number, file name and error code causing the assert:

https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/an-introduction-to-error-handling-in-nrf5-projects

If you don't want log, it should be simply set:
NRF_LOG_ENABLED 0
NRF_LOG_BACKEND_UART_ENABLED 0
NRF_LOG_BACKEND_RTT_ENABLED 0

In sdk_config.h

Best regards,
Kenneth

[zzt]

I'll try debug. I just dont want to log to ble, I'm using log on UART. How can I just disable logs to ble backend?

[zzt]

I have added DEBUG as a macro, it was not an assert error but a hard_fault error, nothing was printed. I added breakpoints and saw following information. It seems like a void pointer error? The p_stack->pc value is 0x00030806. This error happened right after ble disconnection.

Best regards,

Zheng