Changing TX Power and PHY in NCS Example at Runtime

RE: Changing TX Power and PHY in NCS Example at Runtime

Hung Bui — Fri, 23 Jul 2021 09:19:27 GMT

Hi Akash,

I believe it's the standard HCI interface, so it's common between the Zephyr Controller and the Softdevice controller.
BT_HCI_OP_VS_WRITE_TX_POWER_LEVEL is not implemented in the throughput example, but I don't see any reason why it wouldn't work. Have you tried to test ? Just call the function in a thread after connected.

RE: Changing TX Power and PHY in NCS Example at Runtime

Akash Patel — Thu, 22 Jul 2021 16:13:23 GMT

Hi Hung,

[quote userid="2121" url="~/f/nordic-q-a/77753/changing-tx-power-and-phy-in-ncs-example-at-runtime/321351#321351"]Have you tried the throughput example in \nrf\samples\bluetooth\throughput ?
In the example you can find the API to request PHY update or data length update. [/quote]

Thanks, looks like the function to focus on is bt_conn_le_phy_update being set by the shell command here.

[quote userid="2121" url="~/f/nordic-q-a/77753/changing-tx-power-and-phy-in-ncs-example-at-runtime/321351#321351"]

For TX Power you can call
bt_hci_cmd_send_sync(BT_HCI_OP_VS_WRITE_TX_POWER_LEVEL, buf, &rsp);

Please have a look here: github.com/.../hci_pwr_ctrl

[/quote]

I have looked at this example before but from my understanding, this is only relevant if I am using the Zephyr controller. Is that correct? Also how is that API compatible with the Throughput Example? Can you show where and how it would be implemented in that example?

Please also answer this:

[quote userid="74303" url="~/f/nordic-q-a/77753/changing-tx-power-and-phy-in-ncs-example-at-runtime"]Are these function calls different if I use the Zephyr Controller vs. the SoftDevice Controller?[/quote]

Regards,

Akash

RE: Changing TX Power and PHY in NCS Example at Runtime

Hung Bui — Thu, 22 Jul 2021 12:28:17 GMT

Hi Akash,

Have you tried the throughput example in \nrf\samples\bluetooth\throughput ?
In the example you can find the API to request PHY update or data length update.
For TX Power you can call
bt_hci_cmd_send_sync(BT_HCI_OP_VS_WRITE_TX_POWER_LEVEL, buf, &rsp);

Please have a look here: github.com/.../hci_pwr_ctrl