undefined reference to device

RE: undefined reference to device

danny0007 — Sat, 14 Dec 2024 19:04:57 GMT

Hi Bjoern Bialy

glad to read this thread, I encounter the similar issue.

could you please share more info in detail how you solve this?

Thanks

Danny

RE: undefined reference to device

Bjoern Bialy — Tue, 11 Jun 2024 12:56:41 GMT

I found the error, sadly it was just a user error - I forgot to add one of the files to the CMake files. There were also some other C/C++ compatibility problems, but it works now. Thanks for the help.

RE: undefined reference to device

Charlie — Tue, 11 Jun 2024 12:40:21 GMT

Hi Rico,

You are correct, this is not a problem. I also found a device is normally defined as following, could this be the cause?

static const struct device *dev= DEVICE_DT_GET(DT_ALIAS(sensor));

I found LP5562 RGB LED — Zephyr Project Documentation is pretty similar with what ktd2026, you can just reuse the sample to test your device.

Best regards,

Charlie

RE: undefined reference to device

Bjoern Bialy — Fri, 07 Jun 2024 12:23:45 GMT

I don't think so, as the the dash is not used in code and gets converted to an underscore. If I change it like that, the error changes to:

C:/Users/.../ncs/zephyr/include/zephyr/device.h:84:41: error: '__device_dts_ord_DT_N_ALIAS_led' was not declared in this scope

RE: undefined reference to device

Charlie — Fri, 07 Jun 2024 11:03:13 GMT

Hi Rico,

Just have a quick check, I think DT_ALIAS(led_ktd2026) should be DT_ALIAS(led-ktd2026).

Best regards,

Charlie