Assistance Needed for Runtime change LE 1M PHY to LE 2M PHY on nRF5340 for Faster DFU Process

RE: Assistance Needed for Runtime change LE 1M PHY to LE 2M PHY on nRF5340 for Faster DFU Process

Kaushik Parsana — Tue, 17 Sep 2024 10:56:17 GMT

Hi Hung,

My problem got resolved after added CONFIG_BT_CTLR_PHY_2M=y this configuration inside the child image folder prj.conf file.

For application added below changes.

CONFIG_BT_AUTO_PHY_UPDATE=n
CONFIG_BT_USER_PHY_UPDATE=y

Thanks

Kaushik Parsana

RE: Assistance Needed for Runtime change LE 1M PHY to LE 2M PHY on nRF5340 for Faster DFU Process

Hung Bui — Mon, 16 Sep 2024 13:28:44 GMT

Hi Kaushik,

The sniffer trace you provided unfortunately doesn't capture any connection, only advertising packets.
Please follow our guide here to know how to use the sniffer to capture a connection: https://academy.nordicsemi.com/courses/bluetooth-low-energy-fundamentals/lessons/lesson-6-bluetooth-le-sniffer/

Could you send us your .config file ? (in both the application build folder and the hci_rpmsg build folder inside the application build folder)
Have you made sure you added this

CONFIG_BT_CTLR_PHY_2M=y

To both the prj.conf and hci_rpmsg.conf file inside child_image folder ?

RE: Assistance Needed for Runtime change LE 1M PHY to LE 2M PHY on nRF5340 for Faster DFU Process

Kaushik Parsana — Mon, 16 Sep 2024 12:42:42 GMT

devzone.nordicsemi.com/.../snifferLogs.pcapng

Hi Hung,

Please find the attached file containing the sniffing logs. I applied the filter btcommon.eir_ad.entry.device_name contains "HU:D114" during log capture, as "HU:D114" is my BLE advertisement ID.

Kindly review the logs and advise on the next steps.

I have debugged a few things and found the following settings in the `build/zephyr/.config` file:

- `CONFIG_BT_USER_PHY_UPDATE=y`
- `# CONFIG_BT_AUTO_PHY_UPDATE is not set`
- `CONFIG_BT_PHY_UPDATE=y`

Additionally, the `CONFIG_BT_PHY_UPDATE=y` setting is enabled in both the child image and the application image. Which means configuration was proper.

RE: Assistance Needed for Runtime change LE 1M PHY to LE 2M PHY on nRF5340 for Faster DFU Process

Hung Bui — Fri, 06 Sep 2024 13:03:28 GMT

Hi,
Please try to capture a sniffer trace.
Please also try to request PHY change from the peripheral side.

RE: Assistance Needed for Runtime change LE 1M PHY to LE 2M PHY on nRF5340 for Faster DFU Process

Kaushik Parsana — Fri, 06 Sep 2024 12:49:34 GMT

Hi Hung,

I have enabled `CONFIG_BT_PHY_UPDATE=y` in the `prj.conf` file of the Multiprotocol_rpmsg child image folder, which is used for the network core in our project. However, I am still unable to set the preferred PHY level.

Thanks,

Kaushik Parsana

RE: Assistance Needed for Runtime change LE 1M PHY to LE 2M PHY on nRF5340 for Faster DFU Process

Hung Bui — Thu, 05 Sep 2024 13:05:37 GMT

Hi Kaushik,

Since the NRF53 has the controller running on network core. You may want to put the configuration CONFIG_BT_PHY_UPDATE=y to hci_rpmsg.conf file inside child_image.

If it doesn't help, please try capture a sniffer trace so we can check why PHY is not updated. You can start testing with simple application instead of the Matter lock demo.