Cannot download multiple load file because they overlap

[nordev]

Hello, I was told to make a new ticket after commenting on this ticket.

I am using SDK 14.2, S140 alpha, NRF52840. Segger IDE. I have been developing with this IDE & SDK for months, and all of a sudden, this error is cropping up when I download my application to my device via the debugger. It happens seemingly sporadically, but more and more frequently, and it is starting to drive me crazy. I can't even test my code because it won't run properly.  

These are my section placement macros (below). I have not changed them at all over the course of this project; I am not currently updating my SDK, I have not made any drastic code changes, and suddenly out of nowhere, I'm getting this error message about multiple load files overlapping. 

FLASH_PH_START=0x0

FLASH_PH_SIZE=0x100000

RAM_PH_START=0x20000000

RAM_PH_SIZE=0x40000

FLASH_START=0x22000

FLASH_SIZE=0xde000

RAM_START=0x20002108

RAM_SIZE=0x3def8

and the weirdest thing is sometimes if i just press the "debug > Go" (F5) button over and over again, without changing any code, it just runs. it is like 1 out of 5-10 times that it will run. other times i get the above error. If I press F5 while the error is happening, there is a high chance the error will happen again. But if I wait hours and come back, it seems like the problem goes away, without me changing any code or anything.

What is happening? How do I make it stop?

[Einar Thorsrud]

Hi,

I am not able to explain this, and have never seen it before unless there is actually an overlap. But in that case it should be consistent. Which SES version are you using? Does upgrading to a later SES version help?

The error seems to indicate that load files are overlapping, but I assume the only additional load file is the SoftDevice? 

Also, note that SDK 14.2 and the alpha SoftDevice is not supported for production with the nRF52840, so I suggest you migrate to a more current SDK and SoftDevice. The first with production support for the nrF52840 was SDK 15.0.0, but the latest is 17.0.2.

[nordev]

Einar Thorsrud said:

I assume the only additional load file is the SoftDevice? 

I think so. What other load files could I have? I am planning to do OTA DFU but haven't yet, so I probably don't have a bootloader?

This issue is very strange, because it is very sporadic. It was happening all the time around the time that I posted. But now it is not happening at all anymore. I did not upgrade my SES version. 

I am planning to upgrade my SDK asap. 

[Einar Thorsrud]

Hi,

nordev said:

I think so. What other load files could I have?

The examples only include the SoftDevice as a load file. And if this was the problem it should have been always, so I do not think it is relevant.

nordev said:

I am planning to do OTA DFU but haven't yet, so I probably don't have a bootloader?

No. I suggest you check out Getting started with Nordic's Secure DFU bootloader, a step by step guide.

nordev said:

This issue is very strange, because it is very sporadic. It was happening all the time around the time that I posted. But now it is not happening at all anymore. I did not upgrade my SES version. 

I see. It is difficult to suggest anything then. If you see it again, perhaps upgrading SES is worth while. Alternatively you could ask Segger.