Error 133 (0x85) Gatt Error while implementing DFU

[ZaQa]

Hi,

I am using nRF52832 as the main microcontroller in my project. I wanted to add Nordic Semiconductor buttonless DFU to my application and now it's working correctly with all the example applications from SDK17 but when I upload my own new version of the application through Bluetooth, however, the uploading process completes successfully, the nrf connect log ends up with the Error 133 (0x85): Gatt Error (attached screenshot). And my device not working or advertising; it does absolutely nothing!

 Any advice? I would appreciate any help with this issue.

[Simonr]

Hi

By "your own new version", can you share some information on what you changed? Are you working on a development kit with debugging opportunities or a custom design? The GATT Error 133 (0x85) is a very generic error that could mean a number of things, and at the end of the DFU update only means that it loses connection really. I think you will need to debug to get some kind of error messages on the nRF52832 side to get to the bottom of this.

Best regards,

Simon

[ZaQa]

A feature of saving data on Flash has been added to the new version of the application.
I use a custom design board, however, I can attach a programmer to it and debug it through segger embedded studio. The thing is that I have no idea how to get logs in an application plus bootloader. I am a pretty newbie in this field, can you help me please, and give me some cues on how can I get logs and error messages in this special case?