nRF52840 BLE DFU (OTA ) example

Question

Is there any example for nRF52840 DFU? 
 Detail steps is better... 
 I want upgrade my firmware through nRF connect app...

Amanda Hsieh · Accepted Answer

Hi Pony, 
 Please see the 
 Example: BLE Secure DFU Bootloader , Buttonless DFU Template Application 
 Toturial: getting-started-with-nordics-secure-dfu-bootloader 
 -Amanda H.

Amanda Hsieh · Answer

Hi Pony, 
 May I know what are the commands you use to generate and flash the images? 
 You have to download nRF-Command-Line-Tools to generate bootloader_setting and merge the image. 
 I usually do like this: mergehex -m softdevice.hex bootloader.hex -o merged_SD_bootloader.hex
nrfjprog --program merged_SD_bootloader.hex --chiperase

nrfutil settings generate --family NRF52840 --application app.hex --application-version 1 --bootloader-version 1 --bl-settings-version 1 settings.hex
mergehex -m hrs_app.hex settings.hex -o merged.hex
nrfjprog --program merged.hex --sectorerase -r 
 When you generate the bootloader setting, you should use --family NRF52840 for nRF52840. 
 -Amanda H.

nRF52840 BLE DFU (OTA ) example

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