[Direct Test Mode] The failed result of for nRF54L15 via SDK v3.0.0

[Paul Lin]

Hi Support team:

I am new for using the Nordic Design kit of nRF54L15-DK. 

And I would like to use the app "Direct Test Mode" v2.4.2 built-in the "nRF Connect for Desktop" v5.1.0 on my Windows OS.

But I followed up the instruction to install the SDK with v3.0.0 and burn the .hex into the board and power-on still show the error message.

Cannot communicate with the device. Make sure it is not in use by another application, that the correct serial port has been selected, and that it uses firmware compatible with Direct Test Mode.

[Paul Lin]

Hi Support Team:

Do have any recommended samples for Direct Test Mode?

[Paul Lin]

Hi Support Team :

This is the file I compiled from Samples/Direct Test Mode and burn into nRF54L15 but the App "Direct Test Mode" still can`t communicate it.

8865.zephyr.hex

[Håkon Alseth]

Hi,

 

Thank you for sharing the .hex file that you use. 

I was able to run this on my end, but I needed to try both COM-ports. Could you check if the other enumerated COM port, by selecting it in the top-left corner?

 

Kind regards,

Håkon

[Paul Lin]

Hi Hakan:

I noticed that the programmer doesn`t burn into the board successfully but i noticed one issues can`t understand.

No matter the transmit power set 0dBm or 8dBm why my test instrument get the same measured power around 0dBm?

I use the test probe to touch the connector MM8130-2600 and connect to my instrument CMW-270 to check.

But can`t see the significant power difference between these two power settings.

[Paul Lin]

Hi Hakon:

Does any limitation for power setting of Direct Test Mode?

I noticed if I set the power under 0dBm will cause the communication failed.