programming on custom board

[Siv]

Hi there,

I have developed the custom board with nrf52832 Soc and programmed blink code, it works fine.Now i uploaded the ble DFU template example and updated firmware successfully, then after it is not advertising and not even connecting to my DK. please resolve the issue..

thank you.

[Hung Bui]

Hi Siv, 

Please always read the documentation when testing. See here: https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/ble_sdk_app_buttonless_dfu.html?cp=7_1_4_2_2_6

The DFU template example requires the bootloader to be flashed. 

I wouldn't suggest to start with the DFU template before you test the bootloader. 

Besides the documentation for bootloader, you can also have a look at this tutorial for testing the bootloader. 

There is  an useful post about debugging here:  devzone.nordicsemi.com/.../

[Siv]

Hi hung,

I have followed the tutorial and uploaded the secure bootloader first and updated the ble template example from nrfconnect. It works fine and later i have also uploaded two more other firmwares successfully,they are also advertised.

Now what i did here is added one more service in the advertising uuid array(ble_uuid_t m_adv_uuids[] ) and generate zip using nrfutil,updated the firmware successfully and then it stops advertising and not even available to connect for programming.here i got the problem.

[Hung Bui]

Have you verified that the firmware would work ? 
Please try to test without doing DFU. Just flash the softdevice + the application. 
If it's the DFU buttonless application that requires the bootloader, please generate bootloader setting. With the bootloader setting you can just flash the DFU buttonless application and the bootloader setting using the normal programmer and no DFU. I have mentioned about this in the tutorial I pointed to (appendix 1). 

Please try to debug using the guide here.