nRF9160 AT Interface options

[KV]

Hi,

When nRF9160 is used as a co-processor and an external host MCU is used to interface with nRF9160, what are the serial interfaces that are allowed? The at_client example uses UART, is it possible to use SPI instead of UART?

The at_client example simply has a main.c file with a printf statement. Where are the UART related code in this sample?

Thanks,

[Håkon Alseth]

Hi,

 

The at_client uses the library named at_host:

https://github.com/nrfconnect/sdk-nrf/blob/master/lib/at_host/at_host.c

 

which is initialized on boot up, which is the reason why main is empty:

https://github.com/nrfconnect/sdk-nrf/blob/master/lib/at_host/at_host.c#L308

 

It does not support other transport layers than UART (UART0, 1 or 2) at this time, unfortunately.

However; you can patch the at_host file, and add any other transport layer if you'd like.

 

Kind regards,

Håkon