nRF52840 DK DTM with HEX file

RE: nRF52840 DK DTM with HEX file

Ken Li — Thu, 27 Jun 2024 03:38:53 GMT

Hi Priyanka,

[quote userid="107729" url="~/f/nordic-q-a/112128/nrf52840-dk-dtm-with-hex-file/490606"]NRF_RADIO_TXPOWER_POS8DBM[/quote]

I try this setting, and it works.

Thank you for your support !

BR,

Ken

RE: nRF52840 DK DTM with HEX file

Priyanka — Tue, 25 Jun 2024 11:34:36 GMT

Hi,

Taking a deeper look, it looks like using the CONFIG_BT_CTLR_TX_PWR_PLUS_8=y is for all other applications, but for the DTM sample it's a bit different.

You can see here: https://github.com/nrfconnect/sdk-nrf/blob/v2.6.1/samples/bluetooth/direct_test_mode/src/dtm.c#L401C3-L401C10

that the default is set to 0dBm from NRF_RADIO_TXPOWER_0DBM. S you could try setting this to say, NRF_RADIO_TXPOWER_POS8DBM

Sorry for the confusion and do let me know how it goes.

-Priyanka

RE: nRF52840 DK DTM with HEX file

Ken Li — Fri, 21 Jun 2024 08:23:13 GMT

By the way, I compile DTM example in this way :

Using nRF Connect SDK and west to compile and program the DTM example into the nRF52840 DK

RE: nRF52840 DK DTM with HEX file

Ken Li — Fri, 21 Jun 2024 08:16:46 GMT

Hi Priyanka,

[quote userid="107729" url="~/f/nordic-q-a/112128/nrf52840-dk-dtm-with-hex-file/489858"]add the line CONFIG_BT_CTLR_TX_PWR_PLUS_8=y. This will set the Tx power to +8dBm. Also, please make sure to add CONFIG_BT_CTLR_TX_PWR_DYNAMIC_CONTROL=y[/quote]

I add these two line to prj.conf under this path : v2.6.1\nrf\samples\bluetooth\direct_test_mode, but tx power is still -1dBm.

[quote userid="107729" url="~/f/nordic-q-a/112128/nrf52840-dk-dtm-with-hex-file/489859"]How to set the Tx power to +8db on nRF52840[/quote]

I also check .config under this path : v2.6.1\nrf\samples\bluetooth\direct_test_mode\build\zephyr, but I can't find CONFIG_BT_CTLR_TX_PWR_PLUS_8=y and CONFIG_BT_CTLR_TX_PWR_DYNAMIC_CONTROL=y in that file.

Does it mean that I can't change Tx power under direct test mode?

BR,

Ken

RE: nRF52840 DK DTM with HEX file

Priyanka — Fri, 21 Jun 2024 07:32:11 GMT

You can also refer to some of the tickets that I have attached:

How to set the Tx power to +8db on nRF52840

NCS 2.5.2, legacy adv, how to increase legacy adv tx power

RE: nRF52840 DK DTM with HEX file

Priyanka — Fri, 21 Jun 2024 07:31:10 GMT

Hi,

To set the Tx power to 8dBm, you should modify your prj.conf file, not the Kconfig file in the Zephyr subsystem.
In your prj.conf file, you should add the line CONFIG_BT_CTLR_TX_PWR_PLUS_8=y. This will set the Tx power to +8dBm. Also, please make sure to add CONFIG_BT_CTLR_TX_PWR_DYNAMIC_CONTROL=y -Priyanka

RE: nRF52840 DK DTM with HEX file

Ken Li — Fri, 21 Jun 2024 07:20:36 GMT

Hi Priyanka,

I find the Kconfig file under this path : v2.6.1\zephyr\subsys\bluetooth\controller.

I've tried to replace BT_CTLR_TX_PWR_0 with BT_CTLR_TX_PWR_PLUS_8, but it didn't work.

Which line should I modify if I want to set Tx power to 8dBm?

BR,

Ken

RE: nRF52840 DK DTM with HEX file

Priyanka — Fri, 21 Jun 2024 06:23:10 GMT

Hi,

You can use the CONFIG_BT_CTLR_TX_PWR to set the Tx power.

-Priyanka

RE: nRF52840 DK DTM with HEX file

Ken Li — Fri, 21 Jun 2024 03:22:28 GMT

Thanks for replying, I've installed nRF Connect SDK v2.6.1.

The function of DTM works, but the current Tx power is only -1dBm.

How to modify Tx power of nRF52840 DK?

RE: nRF52840 DK DTM with HEX file

Priyanka — Thu, 20 Jun 2024 12:28:22 GMT

Hi Ken,

Yes, please use the latest nRF Connect SDK version, preferably v2.6.1

Regards,

Priyanka

RE: nRF52840 DK DTM with HEX file

Ken Li — Thu, 20 Jun 2024 02:49:12 GMT

Hi Priyanka,

Thanks for replying, I'm now using nRF Connect SDK v2.3.0.

Should I update SDK to the latest version?

BR,

Ken

RE: nRF52840 DK DTM with HEX file

Priyanka — Mon, 17 Jun 2024 05:55:03 GMT

Hi,

You can use the DTM sample for the RF-PHY tests.

Please also refer this ticket which may be of help.

Regards,

Priyanka