EmptyPDU will not be sent

RE: EmptyPDU will not be sent

Sigurd — Thu, 10 Feb 2022 09:13:58 GMT

[quote user="m-okabe"]Will softdevice stop working if the 32k clock deviates from the "NRF_SDH_CLOCK_LF_ACCURACY" range?[/quote]

It could then open the RX window too late/early, and you risk packet loss/retransmissions.

Do you have external LF crystal on you board? If no, make sure that you in sdk_config.h set NRF_SDH_CLOCK_LF_SRC to 0, NRF_SDH_CLOCK_LF_RC_CTIV to 16, NRF_SDH_CLOCK_LF_RC_TEMP_CTIV to 2, and NRF_SDH_CLOCK_LF_ACCURACY to 1. Make sure that this is done for both the application and bootloader projects.

RE: EmptyPDU will not be sent

m-o — Thu, 10 Feb 2022 00:33:28 GMT

Thank you Sigurd

The person in charge of HW contacted me.
The 32K clock was not working properly.

Will softdevice stop working if the 32k clock deviates from the "NRF_SDH_CLOCK_LF_ACCURACY" range?

RE: EmptyPDU will not be sent

Sigurd — Tue, 08 Feb 2022 12:22:30 GMT

[quote user=""]When connecting to an Android device, Empty PDUs will no longer be sent.[/quote]

Could you capture a sniffer trace, and upload it here?

https://www.nordicsemi.com/Products/Development-tools/nRF-Sniffer-for-Bluetooth-LE

Do you have the log from nrf_log as well?