The Buttonless DFU Template Application is not working on a custom board

Question

Hi, 
 I am currently working on a custom product that uses module BMD-300 from u-blox, which has nrf52382 chip in it. My application works fine and now I want to integrate the Secure DFU function into it. I programmed the board with the DFU test image sd_s132_bootloader_buttonless_with_setting_page_dfu_secure_ble_debug_without_bonds.hex but I could not see it advertising when I scan for devices on nrf Connect. Does anyone know what problem could cause it to not advertising? I am using sdk v15.0.0. 
 Thank you in advance.

Edvin · Accepted Answer

Try setting: 
 NRF_SDH_CLOCK_LF_RC_CTIV = 16 and 
 NRF_SDH_CLOCK_LF_RC_TEMP_CTIV = 2 in sdk_config.h of your bootloader project. 
 
 You should set these equal to what you set them to in your application's sdk_config.h file.

Edvin · Answer

The send_update_request is called from a timer timeout. I just checked, and it is an app_timer timeout. I see that you are running the app_timer on IRQ priority 2. Can you try to lower this priority to 6? 
 Look for APP_TIMER_CONFIG_IRQ_PRIORITY in sdk_config.h

The Buttonless DFU Template Application is not working on a custom board

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