Problem with NRFX_CHECK(NRFX_UART_ENABLED) when trying to include the UART driver module to my project

[Casper Kronborg Pedersen]

Hi Nordic DevZone,

I am trying to include the UART driver module (.c .h file pairs) into my new project in SEGGER Embedded Studio.

I have done the following:

1. I have created a new folder, and added the existing driver file: nrfx_uart.c

 

2. Added the nrfx_uart.h file under the User Include Directories - (Common: Project Options -> Preprocessor -> User Include Directories -> Path to nrfx_uart.h file)
   I am certain that the Project Variable $(SDK) works in defining the path to the file.

3. Used the CMSIS Configurator java tool to enable the NRFX_UART_ENABLED definition in the sdk_config.h file. I did also double check in the editor to see that NRFX_UART_ENABLED is set to 1 in the sdk_config.h file. The same is done for NRFX_UART0_ENABLED.

 

The project can build and run, but all of the code in nrfx_uart.c is grayed out because the line #if NRFX_CHECK(NRFX_UART_ENABLED) is not working. When I try to use functions from the nrfx_uart.c file, they cannot be found and the project will not build.

 

I hope you can help me understand what else I need to do to get this driver module working and gain access to the grayed out code.

 

Br. Casper

[awneil]

It'll be that there's more settings required in the sdk_config.h file.

I suggest that you take an example project with working UART, and see what other settings are used in its sdk_config.h

Or just base your project on something which already has working UART support.

Casper Kronborg Pedersen said:

all of the code in nrfx_uart.c is grayed out because the line #if NRFX_CHECK(NRFX_UART_ENABLED)

Using the example project with working UART, browse to find what is needed to enable that.

The sdk_config.h is a constant cause of problems - possibly the biggest single cause of problems?

This is really something that Nordic need to sort out.

See: devzone.nordicsemi.com/.../179930

[awneil]

Casper Kronborg Pedersen said:

Used the CMSIS Configurator java tool

FWIW, I find the config viewer/editor in Keil far superior. The free version is all you need:

https://devzone.nordicsemi.com/f/nordic-q-a/45362/cmsis-configuration-wizard---option-highlighting/178343#178343

Even when using SES for code development, I use the free Keil for viewing & editing sdk_config.h

[Casper Kronborg Pedersen]

Thank you for replying to fast!

I will try and look through the UART example sdk_config.h file to find any inconsistent defines.

I really want to avoid using an example with the UART already working because I only want to include the absolutely essential files from SDK.

Also I will need to include many more drivers such as:

- SPI

- QSPI

- I2C

- USB

and later the Softdevice for using Bluetooth Low energy (BLE)

[awneil]

Casper Kronborg Pedersen said:

because I only want to include the absolutely essential files from SDK

As you are finding, adding components to a project is non-trivial.

Removing them is much easier!