DFU _ OTA

[AKV]

Hai,

I am beginner in this. i am working on nrf 52832 and using sdk 15 . I need to update the firmware remotely in the field using smartphone with BT.

In sdk 15 there are four examples,

1.experimental

2.open_bootloader

3.secure_bootloader

4.secure_dfu_test_images.

  how to start...?

[tesc]

Hi,

For BLE OTA DFU, which is what you are looking for, it is the secure_bootloader. The secure_dfu_test_images folder contains test files for performing DFU with the secure_bootloader. You can start with the BLE Secure DFU Bootloader example.

Regards,
Terje

[AKV]

Thank you for youe reply. I did test with the help of <InstallFolder>\examples\dfu\secure_dfu_test_images.  I am beginner in this.I want to create my own firmware package for testing. Can you provide simple method for this..? Is it possible with open bootloader..?

[tesc]

Hi,

I still refer to the BLE Secure DFU Bootloader example. (Follow the link from my previous reply.) It describes in step 1. of the testing how to do this for your own firmware. You can for instance start by using an unmodified SDK example for firmware.

For BLE you should use the secure DFU. We do not have any implementation of the open bootloader that uses BLE, so in order to use the open bootloader (i.e. without signing) you have to do some work yourself. I highly recommend getting used to the BLE Secure DFU Bootloader before attempting to combine the open bootloader with BLE.

Regards,
Terje