To put device in bootloader mode without pressing button

[Tushar_V]

Hi all,

I am using nrf52840 with zephyr

The below link puts device in bootloader mode but with pressing button

I want to do it without pressing button

https://devzone.nordicsemi.com/guides/nrf-connect-sdk-guides/b/software/posts/device-firmware-update-dfu-with-mcuboot-bootloader

Regards

Tushar

[Einar Thorsrud]

Hi Tushar,

The tutorial you liked to demonstrates the serial recovery DFU. The feature is intended to work even if (for some reason) the application is not functioning properly. In other cases, you typically let the application handle the transport by including MCUMGR support in the application. This can be used with serial, Bluetooth, or other transports (and you do not need any button press to enter DFU mode). You can see the details in Add DFU support to your application. Is this what you are looking for?

Einar

[Tushar_V]

Hi Einar Thorsrud,

i have tried serial dfu with the above link you've sent but it shows like this

 38.14 KiB / 38.75 KiB [====================================================================================================>-]  98.44% 32 B/s

it is gets freezed i have tried many times but every it gets stops at 97 or 98

Regards

Tushar

[Einar Thorsrud]

Hi Tushar,

That is odd. Did you disable the mass storage device on the DK?

[Tushar_V]

Hi,

I disabled mass storage by giving command MSDDisable in JLINKExe it gave me output as probe configurede successfully

Regards

Tushar

[Einar Thorsrud]

I see. That should be OK, then. Do you by any chance have another DK you can test with, or another computer?