AT Monitor always prints AT responses to logging UART

RE: AT Monitor always prints AT responses to logging UART

droberson — Thu, 13 Mar 2025 16:06:55 GMT

That's unfortunate.

Thanks for your help! I am still learning the ins and outs of Zephyr.

Derek

RE: AT Monitor always prints AT responses to logging UART

dejans — Thu, 13 Mar 2025 09:23:52 GMT

Hi Derek,

[quote user="droberson"]Can I enable echo on the modem's AT interface via the AT Host library?[/quote]

There is no such functionality.

Best regards,
Dejan

RE: AT Monitor always prints AT responses to logging UART

droberson — Wed, 12 Mar 2025 18:03:43 GMT

Hey Dejan,

Thanks for the info! CONFIG_AT_HOST_LIBRARY=y was set in my board configuration file (boards/nrf9151dk_nrf9151_ns.conf) as part of the https_client example. Setting this to 'n' removed the AT responses, so this works! I thought this was required to be enabled for this example because it was in the board configuration file by default. Now I know.

I didn't realize the AT Host library gave you direct access to the modem's AT command interface via UART. When I type into my terminal, I never see any characters echoed, so I had no idea this was even enabled.

Other modems I have worked with will echo characters I type on their AT interface and you must disable echo with the "ATE0" command. It seems with the Nordic modem that echo is disabled by default.

Question: Can I enable echo on the modem's AT interface via the AT Host library?

Thanks,

Derek

RE: AT Monitor always prints AT responses to logging UART

dejans — Wed, 12 Mar 2025 12:51:04 GMT

Hi Derek,

If you have AT Host library enabled, it uses uart0 by default. Do you get AT responses printed if you disable AT host library by adding CONFIG_AT_HOST_LIBRARY=n to your project configuration?

Best regards,
Dejan