Issue with DFU over UART

RE: Issue with DFU over UART

Amanda Hsieh — Mon, 09 Dec 2019 08:50:18 GMT

Thanks for the feedback.

I will report to the internal. 🙂

-Amanda H.

RE: Issue with DFU over UART

beemavishnu — Sun, 08 Dec 2019 15:25:28 GMT

Thank you for your inputs. It worked now after loading SoftDevice.

Better to mention the same in below link as it will be confusion for new persons. (For BLE Secure bootloader, SoftDevice is loaded by default).

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fsdk_nrf5_v16.0.0%2Fsdk_app_serial_dfu_bootloader.html

Thanks & Regards

Vishnu Beema

RE: Issue with DFU over UART

Amanda Hsieh — Wed, 04 Dec 2019 07:23:40 GMT

Hi,

[quote user=""]1) I followed below steps to do DFU hrs_application_s140.zip package over Secure bootloader.[/quote]

The project you run was at \examples\dfu\secure_bootloader\pca10056_uart_debug\ses and it’s the mbr bootloader. This doesn’t contain the softdevice. This explains why you saw nothing when the hrs example uploaded successfully but no activity.

You can test using the blinky_mbr.zip instead.

Or if you want an application with BLE, you need to do the SoftDevice update first (softdevice_s140.zip) and then do hrs_application_s140.zip update. (this is for nRF52840)

[quote user=""]2) Once pca10056_uart_debug / bootloader is flashed, whether I can flash my other example (ble_app_blinky) using Segger IDE. I tried based on below link. But still DK is in boot mode (LED3 is ON).[/quote]

Or if you want an application with BLE, you need to do the SoftDevice update first (softdevice_s140.zip) and then do other_example_s140.zip update. (this is for nRF52840)

-Amanda H.

RE: Issue with DFU over UART

beemavishnu — Fri, 29 Nov 2019 10:32:40 GMT

Yes, I am using example packages as is

C:\nRF5_SDK_16.0.0_98a08e2\examples\dfu\secure_dfu_test_images\uart\nrf52840

Also I am using "pca10056_uart_debug". So even key should not matter. Please correct me if I am wrong.

RE: Issue with DFU over UART

Amanda Hsieh — Fri, 29 Nov 2019 10:31:06 GMT

Hi,

Did you perform all the steps in Secure DFU Bootloader over Serial Link (UART/USB)?

You should prepare the images with your public key.

-Amanda H.

RE: Issue with DFU over UART

beemavishnu — Fri, 29 Nov 2019 05:20:09 GMT

Hi,

I am using nRF52840, SDK_16.0.0, S140 SoftDevice and Segger 4.16 for flashing the image.

Thanks & Regards

Vishnu Beema

RE: Issue with DFU over UART

Amanda Hsieh — Thu, 28 Nov 2019 15:16:30 GMT

Hi,

Which version of SDK are you using?

-Amanda H.