I am studying how to update the firmware through BLE at the moment. I used the example project of "ble_app_buttonless_dfu", but I am having many questions that I don't understand: when the project is flashed into IC, I can only see the S132 part and Application part in Nrfgo studio, so where is the bootloader? I did not see any bootloader related code in the source code of "ble_app_buttonless_dfu", does it mean I have to flash the bootloader code separately as the S132 code in nrfgo studio? Also, I did not find such a bootloader file. is the "ble_app_button_dfu" ready to test OTA? or I have to add other codes to make it work with bootloader? is there any tutorial to teach me step by step ? Thank you.

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NRF52832 bootloader

zmkm1402022 over 7 years ago

I am studying how to update the firmware through BLE at the moment. I used the example project of "ble_app_buttonless_dfu", but I am having many questions that I don't understand:

when the project is flashed into IC, I can only see the S132 part and Application part in Nrfgo studio, so where is the bootloader?
I did not see any bootloader related code in the source code of "ble_app_buttonless_dfu", does it mean I have to flash the bootloader code separately as the S132 code in nrfgo studio? Also, I did not find such a bootloader file.
is the "ble_app_button_dfu" ready to test OTA? or I have to add other codes to make it work with bootloader?
is there any tutorial to teach me step by step ?

Thank you.

0 MartinBL over 7 years ago

Hi,

Yes, the bootloader is a sepparate hex file and has to be programmed separately. The bootloader project is located in "SDK_14.0.0\examples\dfu\bootloader_secure_ble".

I suggest that you have look at this blog/tutorial and also make sure to read the documentation of the DFU examples. It might be a lot to read, but very useful.
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