ble_app_buttonless_dfu application download issue

[Rajneesh]

Hello Nordic team

I am working on nRF52832 DK with SDkv15.2. Example code ble_app_buttonless_dfu.

I have created successfully bootloader and zip file to update the firmware and it's working correctly.

My question is, if I change the ble_app_buttonless_dfu firmware and load the firmware via KEIL to Dev Kit it's started "dfuTarg" so I have only one way to load the firmware via DFU. Is this right behavior/way to load firmware for ble_app_buttonless_dfu example code?

Please let me know if you didn't understand my questions.

Regards

Raj

[Hung Bui]

Please remove these lines in dfu_enter_check() in nrf_bootloader.c

 if (!nrf_dfu_app_is_valid(crc_on_valid_app_required()))
{
NRF_LOG_DEBUG("DFU mode because app is not valid.");
return true;
}

[Toyman]

Another solution is NOT to flash the bootloader during the development phase. Then you'll be able to upload the code directly from Keil.

Once you finalize the code, flash the bootloader and upload OTA

[Rajneesh]

Hi Toyman, this is just to update you if we only flash softdevice and application it won't work for buttonless_dfu.

[Toyman]

OK. Works for me but I use just secure_dfu (with button), not buttonless. Probably, there is a difference. 

Another option would be to comment out all dfu related stuff suring the developement