SDK 12.3.0 DFU service not work

[JohnathanLyu]

Hi Forums,

I work 51822 custom board.

I try to add Buttonless DFU so I test the "experimental_ble_app_buttonless_dfu" compile is good.

But flash to the board can't find DFU service on NRF Connect tool.

I search online then find most discuss SDK 12.1.0 So I download SDK 12.1.0 build "experimental_ble_app_buttonless_dfu" then flash to board. Magic! It's fine.

I think is strange so try test SDK 12.2.0 . Sadly not worked.

What's different between SDK 12.1.0 ~ SDK 12.2.0 make ble dfu service not work?

Is any suggestion to fix this on SDK 12.3.0?

Thanks for any information.

[bjorn-spockeli]

Could you verify that the RAM section in the linker script (ble_app_buttonless_dfu_gcc_nrf51.ld) is set to the following

  RAM (rwx) :  ORIGIN = 0x20001ff8, LENGTH = 0x6008

[JohnathanLyu]

I find different.

RAM (rwx) :  ORIGIN = 0x20001fe8, LENGTH = 0x6018

But I take a look 12.1.0 linker script is same as 12.3.0.

[bjorn-spockeli]

Could you please change it to the values in my comment above and see if that resolves the issue?

[JohnathanLyu]

I try to edit value. Still not work for me.

[bjorn-spockeli]

Does your custom board have the optional 32kHz crystal?