nrf52840 dfu

[xixili]

i use nRF5_SDK_15.3.0_59ac345\examples\dfu\secure_bootloader\pca10056_ble.

The rom space is only 0x6000 bytes, I need 0x8000 bytes, how do I need to modify it?

[Vidar Berg]

Hello,

You can allocated more space to the bootloader by reducing the start address of the bootloader in flash.  Please see the pca10056_ble_debug configuration for refence. This project sets the start address to 0xf1000 which gives the bootloader 0xd000 bytes.

Best regards,

Vidar

[xixili]

I modified this, but the program cannot run. Do I still need to modify it?

[Vidar Berg]

To ensure that the bootloader start address gets set correctly in the UICR/MBR, try to do a chiperase first, then re-program the Softdevice and your updated bootloader.

[xixili]

To ensure that the bootloader start address gets set correctly in the UICR/MBR??

How to set？

[Vidar Berg]

The addresses are already included in the bootloader hex file.