Is it possible to use the UART without the Soft Device?

[Eliot Stock]

There are some include dependencies that go like this:

app_uart.h -> app_util.h -> app_error.h -> nrf_error.h

and nrf_error.h is under Include/s110.

In order to debug some stuff happening with my UART peripherals, I'd like to do a build with my UART code included but the Soft Device not included, so I can use the extra memory for writing a log of my UART conversation.

Looks like this isn't going to be possible?

[Ulrich Myhre]

The softdevice is not needed to use the UART peripheral. You should be able to get along just fine with nrf51.h and nrf51_bitfields.h.

[Eliot Stock]

How then would you recommend breaking that dependency? Do I have it right above?

[Ulrich Myhre]

You could temporarily remove the CRITICAL_REGION_ENTER / EXIT fields from app_util to remove the dependency to nrf_error, but it's also possible to just access the peripherals directly using the same setup routine as found in app_uart.c. For simply logging data coming in, I think the latter approach would be very simple to set up.

[Eliot Stock]

Thanks. I'm using the types in app_uart.h and want to keep using them, so I'll try copying app_common out of the SDK to an app_common_no_sd in my source tree and breaking the dependencies.

What's the non-SD equivalent to sd_app_evt_wait() though?

[Ulrich Myhre]

__WFI();