nRF9160 where are driver symbols defined?

[paul_tanner]

I'm trying to write a driver for an SPI peripheral.

west says:

```

../ncs/zephyr/samples/sensor/mydriver/prj.conf:5: warning: attempt to assign the value 'y' to the undefined symbol MYDRIVER

```

prj.conf is:

```

CONFIG_SENSOR=y
CONFIG_SPI=y
CONFIG_I2C=n
CONFIG_MYDRIVER=y

```

I've looked at other drivers but have not seen where their main CONFIG_ symbol is defined.

Where else to look pls?

[Håkon Alseth]

Hi,

 

If you want to create your own configuration, I would recommend that you look at the zephyr docs related to kconfig:

https://docs.zephyrproject.org/latest/guides/kconfig/index.html

 

You can look at other samples that has a Kconfig file for local configuration, for instance the aws_fota sample:

https://github.com/nrfconnect/sdk-nrf/blob/master/samples/nrf9160/aws_fota/Kconfig

 

Kind regards,

Håkon

[paul_tanner]

Sorry, I forgot to close this.

zephyr/drivers/sensor/Kconfig  needed

   source "drivers/sensor/mydriver/Kconfig"

zephyr/drivers/sensor/CMakeLists.txt needed

  add_subdirectory_ifdef(CONFIG_MYDRIVER          mydriver)

zephyr/include/drivers/sensor.h  needed sensor channels defined e.g.

  SENSOR_CHAN_O3,

zephyr/drivers/sensor/sensor_shell.c needed the same. e.g.

  [SENSOR_CHAN_O3] = "o3",

After that I got a clean build.  Still testing.