nRF52820 Bootloader error! (Part of the HEX regions are out of the device memory size ,but you can still proceed write operation)

[Taiwan_Fitz_Edward]

Hello, 

I am a firmware engineer in taiwan.

I already use nRF52820 to finish a case.
This case have DFU function.

The DFU function can work ,but when I use  (nRF Connect for Desktop) to load firmware (the all_firmware merge user_firmware and bootloader and software_device ) ,
the tool (nRF Connect for Desktop) show the error message  "(Part of the HEX regions are out of the device memory size ,but you can still proceed write operation)"

The DFU function can work ,but I  am concerned about unknown risks.

I don't know if there are other engineers who also have this situation, and I don't know if there is a solution?
If someone can provide a solution, I would be very grateful.

================================================================================================
nRF52820 , 256K Flash(0x0000000~0x0003FFF =256k)  , 32K RAM

MBR                  :0x00000000~0x00000AFF  (2816 Bytes)
software device :0x00001000~0x0001B4AB (107692 Bytes)
user code          :0x0001C000~0x0003541B (103452 Bytes)

bootloader         ;0x00038000~0x0003DC77(23672 Bytes)

user code  RAM :IRAM1  Start  :0x20002AE8   Size:0x5518     0x20002AE8+0x5518= 0x20008000  (32K RAM =0x8000)
bootloader RAM: IRAM1  Start : 0x20002608   Size:0x59F8       0x20002608+0x59F8= 0x20008000
===============================================================================================

2022/06/16
 Taiwan , Hsinchu County,  
 Edward Yang

[Einar Thorsrud]

Hi Edward,

Thanks for reporting this issue. It seems that the Programmer app shows this error if the hex has data in the UICR region, which is the case for any nRF5 SDK bootloader hex file. In other words, this error is incorrect and you can ignore it. I have reported this to the nRF Connect for Desktop team so that it can be fixed/improved in the future.

Einar

[Taiwan_Fitz_Edward]

Hello , Einar:

  Thank you for your response ,thanks!

edward