nRF9160 as an ATCommand module controlled from external MCU

RE: nRF9160 as an ATCommand module controlled from external MCU

Kazi Afroza Sultana — Wed, 31 May 2023 20:08:11 GMT

Hello Toni,

Have you looked at AT client sample https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/samples/nrf9160/at_client/README.html from NCS?

RE: nRF9160 as an ATCommand module controlled from external MCU

Toni Alomar — Fri, 26 May 2023 11:25:43 GMT

Hello Kazi,

Thanks for your support.

I have my own pcb that includes a nrf52832 (which I program through its own SWD interface) and a nRF9160 (which will be programmed using its SWD interface as well). So we have 2 SWD interfaces to control each mcu.

The main MCU is the first one (nRF52832) and it will have 3 pins from it connected to the nRF9160 (RX, TX, GND). That means main MCU will communicate using UART with the nRF9160. I want the main mcu to see the nRF9160 as an AT Command module because UART is the only via of communication between them.

My question is simple: in order to have the nRF9160 in this "AT Command mode" I assume there's an example code provided by Nordic that I have to flash into the nRF9160 (using its SWD interface) and specifying in the example code the correct pins in which I have mapped the RX,TX from the main MCU. Is that right?

Hope everything is clear and you could help me.

Toni

RE: nRF9160 as an ATCommand module controlled from external MCU

Kazi Afroza Sultana — Tue, 23 May 2023 16:48:56 GMT

Hello Toni,

The Debug in connectors P18 (nRF9160) and P23 (nRF52840) make it possible to connect external debuggers for debugging when the interface USB cable is not connected or if the DK is in IF MCU DISCONNECT mode.

Could you please elaborate a bit what you meant by '' implements de AT funcionality through desired RX,TX specified in the program.''?

Here you can find the GNSS related AT commands: GNSS AT commands — nRF Connect SDK 2.3.99 documentation (nordicsemi.com)

There you can see the enable pin functionalities of nRF9160 https://infocenter.nordicsemi.com/topic/nwp_037/WP/nwp_037/enable.html?cp=2_0_6_3_3_2

Thanks.

Kazi