The size of the file has increased dramatically when I run mergehex.

[alex kim]

Hi, Everyone

My development environment is PCA10028, SoftDevice 130, SDK12.3.0

The size of the file has increased dramatically when I run mergehex.

1. nrfutil settings generate --family NRF51 --application nrf51422_xxac_csc.hex --application-version 1 --bootloader-ver
sion 1 --bl-settings-version 1 setting.hex

Generated Bootloader DFU settings .hex file and stored it in: setting.hex

Bootloader DFU Settings:
* File: setting.hex
* Family: nRF51
* Start Address: 0x0003FC00
* CRC: 0x46BD3CC3
* Settings Version: 0x00000001 (1)
* App Version: 0x00000001 (1)
* Bootloader Version: 0x00000001 (1)
* Bank Layout: 0x00000000
* Current Bank: 0x00000000
* Application Size: 0x00007A18 (31256 bytes)
* Application CRC: 0xC23EB9AF
* Bank0 Bank Code: 0x00000001

2. C:\Users\Administrator\Desktop\Safty_Ulsan>mergehex -m nrf51422_xxac_csc.hex setting.hex -o my.hex
Parsing input hex files.
Merging files.
Storing merged file.

3. C:\Users\Administrator\Desktop\Safty_Ulsan>nrfutil pkg generate --hw-version 51
--application-version 0xff --application my.hex --sd-req 0x87 --key-file private
.key app_dfu_package.zip
Zip created at app_dfu_package.zip

4. nrf51422_xxac_csc.hex -> 86Kbytes

    setting.hex -> 1Kbytes

   app_dfu_package.zip -> 137KBytes

I do not know why this file gets bigger.

Regards

Alex

[FormerMember]

If you extract app_dfu_package.zip, what does it contain?

[alex kim]

Thank you for your quick response.
It contains my.hex like the contents in 3.
my.hex size is 87kbytes