nRF53 NET core flashing, only first 4 KiB flashed unless a mass erase is performed.

[Andre]

I am not sure whether this is an issue with the nRF53 Engineering Example or with the SEGGER software. 

I don't see any errata describing the behaviour I am experiencing:

When I try to run an application on the NET core, it will only write the first 4 KiB to flash. 

I have to do a mass erase of the NET core for the whole application to be written to flash.

I am using SEGGER software version V6.86e with GDB version 9.2

[Andre]

Hi,

Looking at SEGGER's change log, it says

"Device protect check for nRF5340_xxAA_NET core of nRF5340 series device according to new hardware revision (v0.9.0 or newer), adapted. SECUREAPPROTECT bit only for nRF5340_xxAA_APP core implemented."

Could it be that this issue occurs because I my PDK is version 0.8.0?

[Einar Thorsrud]

Hi,

Yes. I also get an error about the device being protected (on an internal 0.7 version in my case, but that is more or less identical to 0.8), though it can be ignored. I will report that.

Regarding the original issue I have not been able to reproduce it or find other references to this issue. Perhaps doing a mass erase before each programing is a sensible workaround for now.