ble_app_buttonless_dfu example not working

RE: ble_app_buttonless_dfu example not working

saurabh — Wed, 16 Aug 2023 14:27:18 GMT

devzone.nordicsemi.com/.../getting-started-with-nordics-secure-dfu-bootloader

Can you please do this step by step

RE: ble_app_buttonless_dfu example not working

NishantParmar — Wed, 19 Apr 2023 12:54:37 GMT

I got the sem error in the nrf52832 and nRF52810 board so can you tell me what kind of changes you have done?

RE: ble_app_buttonless_dfu example not working

saurabh — Fri, 30 Sep 2022 09:03:06 GMT

All Work Fine i understand what is required for that i learn from this site thank you

devzone.nordicsemi.com/.../getting-started-with-nordics-secure-dfu-bootloader

RE: ble_app_buttonless_dfu example not working

Einar Thorsrud — Tue, 20 Sep 2022 07:57:41 GMT

The bootloader is flashed like any other hex file. You need to pick a bootloader example application that fits your DK, for example pca10040_s132_ble_debug (debug has the public key that matches the pre-built DFU images in the SDK, and it also has RTT logging which is good when either learning about the bootloader or if debugging).

If you are new to this, it could be a good idea to start with the pre-built hex files and go through the Buttonless DFU Template Application example documentation. If you flash sd_s132_bootloader_buttonless_with_setting_page_dfu_secure_ble_debug_without_bonds.hex (or the similarly named with bonds) that will include everything you need, both SoftDevice, bootloader, application and a bootloader settings page.

Also, note that the bootloader will only start an application that matches the CRC that is stored in bootloader settings. So a tip if you want to debug the application easily while having a bootloader, si to modify the bootloader to skip checking if there is a valid application during startup. The easiest is to simply modify app_is_valid() in components/libraries/bootloader/nrf_bootloader.c to always return true. You need to ensure that this is not used in production, though (as with this change the bootloader always jumps to the application, regardless if it is present or not, instead of entering DFU mode to enable recovery).

RE: ble_app_buttonless_dfu example not working

saurabh — Tue, 20 Sep 2022 07:34:33 GMT

but i also get error in bootloader also so how can i flash it

RE: ble_app_buttonless_dfu example not working

Einar Thorsrud — Tue, 20 Sep 2022 06:40:18 GMT

Hi,

This error is printed when there is no bootloader on the device (which is a requirement for this function do work). So you need to flash the bootloader as well.