Zephyr Shell and Host Library AT library

RE: Zephyr Shell and Host Library AT library

Håkon Alseth — Wed, 22 Jun 2022 08:12:15 GMT

Hi,

Yes, the shell has an uninit function:

https://github.com/nrfconnect/sdk-zephyr/blob/v3.0.99-ncs1/include/zephyr/shell/shell.h#L849

Please note that you possibly want to place the transport (UART in this case) into a powered off state afterwards as well.

Here's an example on how to place the uart in a suspended state:

https://github.com/nrfconnect/sdk-nrf/blob/v2.0.0/applications/serial_lte_modem/src/slm_at_host.c#L232

Kind regards,

Håkon

RE: Zephyr Shell and Host Library AT library

Waqar Ahmed — Wed, 22 Jun 2022 07:03:19 GMT

Hi Hakon,

Thanks for your response.

Things are working for me now.

AT commands are now working.

is it possible to turn off shell during runtime?

Regards,

RE: Zephyr Shell and Host Library AT library

Håkon Alseth — Mon, 20 Jun 2022 12:02:02 GMT

Hi,

the at host library does not have a init/uninit routine, so you cannot disable and enable this module at runtime.

You'll need to integrate a similar "at" command as done in the modem_shell sample, by adding similar logic as in at_shell.c/.h and registering this as a shell command:

https://github.com/nrfconnect/sdk-nrf/blob/v1.9-branch/samples/nrf9160/modem_shell/src/shell.c#L184

Kind regards,

Håkon

RE: Zephyr Shell and Host Library AT library

Waqar Ahmed — Mon, 20 Jun 2022 10:44:09 GMT

Hi Hakon,
I am using nrfConnect SDK 1.9.0 this complete example is not available in this sdk https://github.com/nrfconnect/sdk-nrf/tree/v1.9-branch/samples/nrf9160/modem_shell/src/at

is it possible that I can enable or disable library during runtime i.e AT Host library.
because I want to use the CLI for changing different variable values or calling function or looking for current status.
right now i am not using CLI for communication with modem.
what I want to do is I will set different variables at time of production, after that I will enable the AT HOST LIbrary.

Regards,

RE: Zephyr Shell and Host Library AT library

Håkon Alseth — Mon, 20 Jun 2022 10:17:33 GMT

Hi,

I'm afraid AT host library has a dependency on a dedicated uart to work.

In order to "integrate" at_host inside zephyr shell, you need to wrap around the AT cmd handling, ie. add code in your project to do so.

modem shell has dedicated code integrated for this purpose: https://github.com/nrfconnect/sdk-nrf/tree/v2.0.0/samples/nrf9160/modem_shell/src/at

Kind regards,

Håkon