set BLE transmit power in NCS

RE: set BLE transmit power in NCS

John — Wed, 24 Feb 2021 18:58:25 GMT

Very clever. You are most likely correct:

The example uses these values:

static const int8_t txp[DEVICE_BEACON_TXPOWER_NUM] = {4, 0, -3, -8,
-15, -18, -23, -30};

Thank you.

RE: set BLE transmit power in NCS

Mttrinh — Wed, 24 Feb 2021 12:54:30 GMT

Hi,

Your issue is probably related to this.

RE: set BLE transmit power in NCS

John — Sun, 21 Feb 2021 22:49:56 GMT

Thank you for that.

Unfortunately I'm still having trouble with those settings added and

I'm using the example in here:

\v1.4.99-dev1\zephyr\samples\bluetooth\hci_pwr_ctrl

RE: set BLE transmit power in NCS

leox — Sun, 21 Feb 2021 22:25:23 GMT

Adding these lines to prj.conf should make it work.

CONFIG_BT_CTLR_ADVANCED_FEATURES=y
CONFIG_BT_CTLR_CONN_RSSI=y
CONFIG_BT_CTLR_TX_PWR_DYNAMIC_CONTROL=y

RE: set BLE transmit power in NCS

John — Sat, 20 Feb 2021 19:21:57 GMT

There are a number of posts indicating that it is a softdevice problem. Please try it yourself, then advise when it may be fixed.

RE: set BLE transmit power in NCS

Mttrinh — Fri, 19 Feb 2021 12:55:36 GMT

Hi,

Are you running the example I referred to? Or a custom application?

Can you give more details about your setup?

RE: set BLE transmit power in NCS

John — Thu, 18 Feb 2021 18:39:20 GMT

I've tried it with v1.4.2 and 1.5-RC1

RE: set BLE transmit power in NCS

Mttrinh — Thu, 18 Feb 2021 12:47:47 GMT

Which version of NCS are you using? It seems like you are getting an issue that was fixed in v1.3.0, have a look at the change log:

Under "Added":

Added support for the Vendor specific HCI command: Zephyr Write TX Power Level (per Role/Connection).

RE: set BLE transmit power in NCS

John — Thu, 18 Feb 2021 08:09:17 GMT

I have exactly the same problem

RE: set BLE transmit power in NCS

leox — Thu, 18 Feb 2021 07:04:16 GMT

devzone.nordicsemi.com/.../test_5F00_coded_5F00_phy_5F00_beacon.7z

it doesn't work with nordic softdevice controller. gets error every time been called. any idea what could be wrong or not been supported by the nordic softdevice controller?

Starting Beacon Demo
[00:00:00.344,512] <inf> sdc_hci_driver: SoftDevice Controller build revision:
cf 5c 0f 11 88 9c d7 02 15 27 c7 c3 ca 60 19 85 |.\...... .'...`..
b7 c4 50 e3 |..P.
[00:00:00.345,947] <inf> bt_hci_core: HW Platform: Nordic Semiconductor (0x0002)
[00:00:00.345,947] <inf> bt_hci_core: HW Variant: nRF52x (0x0002)
[00:00:00.345,947] <inf> bt_hci_core: Firmware: Standard Bluetooth controller (0x00) Version 207.3932 Build 3617359889
[00:00:00.346,649] <inf> bt_hci_core: Identity: fe:a5:fb:16:ab:62 (random)
[00:00:00.346,649] <inf> bt_hci_core: HCI: version 5.2 (0x0b) revision 0x1123, manufacturer 0x0059
[00:00:00.346,649] <inf> bt_hci_core: LMP: version 5.2 (0x0b) subver 0x1123
Set Tx power err: -5 reason 0x00
[00:00:00.447,601] <wrn> bt_hci_core: opcode 0xfc0e status 0x01
Set Tx power err: -5 reason 0x00
[00:00:01.651,336] <wrn> bt_hci_core: opcode 0xfc0e status 0x01
Set Tx power err: -5 reason 0x00

RE: set BLE transmit power in NCS

Mttrinh — Wed, 17 Feb 2021 16:44:32 GMT

Hi,

Have a look at this example, it should work with the softdevice controller out-of-the-box.