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Is it possible to use softDevice on nRF52840 without 32k crystal?

Artak over 7 years ago

Is it possible to use softDevice on nRF52840 without 32k crystal?

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Jørgen Holmefjord over 7 years ago +1 verified

Hi, Yes, you can use 32.768 kHz RC oscillator (LFRC) as the clock source. Best regards, Jørgen

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0 Jørgen Holmefjord over 7 years ago

Hi,

Yes, you can use 32.768 kHz RC oscillator (LFRC) as the clock source.

Best regards,

Jørgen
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0 Jørgen Holmefjord over 7 years ago in reply to Jørgen Holmefjord

Which SDK version are you using? Note that the clock source used by the softdevice is not the one you configure in the CLOCK peripheral settings in sdk_config.h. In SDK 14.x.0, you can configure clock source for the softdevice using the sdk_config.h macros NRF_SDH_CLOCK_LF_SRC, NRF_SDH_CLOCK_LF_RC_CTIV, and NRF_SDH_CLOCK_LF_RC_TEMP_CTIV.
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0 Jørgen Holmefjord over 7 years ago in reply to Jørgen Holmefjord

Which SDK version are you using? Note that the clock source used by the softdevice is not the one you configure in the CLOCK peripheral settings in sdk_config.h. In SDK 14.x.0, you can configure clock source for the softdevice using the sdk_config.h macros NRF_SDH_CLOCK_LF_SRC, NRF_SDH_CLOCK_LF_RC_CTIV, and NRF_SDH_CLOCK_LF_RC_TEMP_CTIV.
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