how to develop uart boot not use ble use 51822 sdk12.3

[aatt05]

hi .eveyone.  i  use 51822 sdk12.3.0  , i want to dfu app code with uart, but not use bootloader_secure and experimental_ble_app_buttonless_dfu. i do not know how to develop.

 have some sample code to provide ,please?

[aatt05]

yes, i have use 51822 ,SDK 12.3  download softdevice ,bootloader_secure and experimental_ble_app_buttonless_dfu. and  phone can scan link 51822 device(Nordic_Buttonless). but i want to debug bootloader_secure. it can not debug. i look many way of web. but do not ok.  i think debug   softdevice do not go to boot.but i do not know why..

[Edvin]

Optimization may lead to strange things while debugging. Try to turn off optimization in your project. I don't think you will be able to do that in the bootloader_secure\pca10028 project due to memory restrictions. Try to use the bootloader_secure\pca10028_debug project for development. It doesn't have the same restrictions.

So: Use SDK\examples\dfu\bootloader_secure\pca10028_debug\arm5_no_packs\secure_dfu_secure_dfu_ble_s130_pca10028_debug.uvprojx, and turn off optimization in your project settings.