error on nRF54L15-DK peripheral-uart compile: undefined node label 'uart0'

[LHZ]

Hello there,

I got an error msg when I tried to compile the Bluetooth LE UART service example for nRF54L15-DK as: " devicetree error: /chosen: undefined node label 'uart0'   "  The screenshot is attached.

However, If I change the board config to nRF52840DK, the example can build sucessefully.  

The SDK is 2.9.0, the toolchain is 2.9.0.  

Thanks in advance, 

 

[Jørgen Holmefjord]

Hi,

UART0 is not available in nRF54L15. The numbering of serial instances has changed to using 2 digits, on to identify domain and one to identify instance. See Peripheral naming conventions.

The default UART instance used for Nordic UART service is uart20: https://github.com/nrfconnect/sdk-nrf/blob/v2.9.0/samples/bluetooth/peripheral_uart/boards/nrf54l15dk_nrf54l15_cpuapp.overlay

It looks like you are building for the _ns target, but there is no overlay for this target included in the sample, you need to create this yourself by replicating the nrf54l15dk_nrf54l15_cpuapp.* files inside boards directory with nrf54l15dk_nrf54l15_cpuapp_ns.* naming. You can also build for the "nrf54l15dk/nrf54l15/cpuapp board".

Best regards,
Jørgen