Disconnect 32.768 kHz crystal X1

RE: Disconnect 32.768 kHz crystal X1

SwRa — Tue, 15 Jul 2025 08:30:47 GMT

Great! i will then close this ticket. :)

-Swathy

RE: Disconnect 32.768 kHz crystal X1

Alexander Sanochkin — Mon, 14 Jul 2025 13:57:35 GMT

Hi Swathy,

This suggestion helps.

Thank you very much!

Regards,

Alexander

RE: Disconnect 32.768 kHz crystal X1

SwRa — Mon, 14 Jul 2025 12:22:42 GMT

Hi Alexander,

Could you try if the solution suggested here works: nrf5340 sysbuild LFCLK loop ?

Regards,

Swathy

RE: Disconnect 32.768 kHz crystal X1

Alexander Sanochkin — Mon, 14 Jul 2025 12:19:37 GMT

Hi Swathy,

Unfortunately we already have these options in our prj.conf. So, the system does not work with CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y and CONFIG_CLOCK_CONTROL_NRF_K32SRC_XTAL=n

Could you provide any other recommendations, please?

Thanks,

Alexander

RE: Disconnect 32.768 kHz crystal X1

SwRa — Mon, 14 Jul 2025 11:48:00 GMT

Hi Alexander,

Set CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y and CONFIG_CLOCK_CONTROL_NRF_K32SRC_XTAL=n in all relevant configuration files. This tells the system to use the internal RC oscillator instead of the external crystal for the low-frequency clock source. If you need to reclaim P0.00 and P0.01 as GPIOs, refer the directions here: 32.768 kHz crystal

Best Regards,

Swathy