What we do if there is no soft device for some example program?

[Abhimanyu K K]

Sir,

In some examples I found some of the example programs does not contains Soft Device. What to do???

And when I Flashed the main file alone it shows some errors.

[Abhimanyu K K]

I am using a custom MDBT50Q board and flashing using ST-Link. Is nRF Connect Programmer or nrfjprog works with that??

[Einar Thorsrud]

Aha, that was a very important piece of information. Everything we have discussed so far assumes that you use a J-Link programmer of some sort. I do not have any experience with ST-Link nor is it explicitly supported by Nordic, but it should be possible to use it.

I assume you have configured the Keil project properly for using the ST-Link debugger? If you still cannot get it to work then I recommend searching this forum for threads about using ST-Link with the nRF52840.The best would probably be to obtain a J-Link (for instance in the form of a nRF52840 DK), as all nRF tools are based on it.

[Abhimanyu K K]

Thank you sir,

But I need the ST-Link to flash. Can you please any other who know about the ST-link debugging.

[Einar Thorsrud]

I recommend you search the DevZone and look at the threads that discuss it. If you are still stuck then I suggest you create a new question where you explicitly ask about the problems you are having with programming using an ST Link, as this is quite off topic compared to your original question in this thread.