Bootloader nRF52832 using SDK 15.3.0

RE: Bootloader nRF52832 using SDK 15.3.0

Hieu — Thu, 06 Jul 2023 13:32:03 GMT

Hi gmwold,

First of all, I would like to inform you that we don't recommend the nRF5 SDK for new design. This SDK has been in maintenance mode and will not receive new feature update. Our currently actively developed SDK is the nRF Connect SDK. On the nRF Connect SDK, you can also find a sample with the Nordic UART Service, as well as guides to add DFU to your project.

[quote user="gmwold"]

but DfuTarg is no longer announced when running the ble_uart application

The code is running and advertising. To be able to compile, I had to change BLE_ADV_SOC_OBSERVER_PRIO to BE_ADV_BLE_OBSEREVER_PRIO in ble_advertising.h, do not know if this has something to say. The code is using SDK version 15.3.0

[/quote]

The device temporarily advertises as "DfuTarg" during the DFU process. In that stage, it is actually the bootloader that is running. After the device is successfully updated, the application will run, and the device will only advertise as the application is programmed to.

[quote user="gmwold"]I've tried to disable all uart0, in case this is making problems for the DFU. This did not help anything. The code below is with the uart.[/quote]

UART0 should not be a problem with DFU. I have used UART0 for logging in both DFU application and the bootloader. What is your concern with UART0 here?

[quote user="gmwold"]is there a good example / description using buttonless dfu for the ble_app_uart?[/quote]

Our recommended way is for you to actually start from ble_app_buttonless_dfu and then add the Nordic UART Service. It tends to be simpler.
There is a guide for getting start with it from my colleague Hung: Getting started with Nordic's Secure DFU bootloader, a step by step guide

There is one alternative, which we do not often recommend because it is from a third party, and we cannot verify it officially. However, NovelBits has a guide on adding BLE Buttonless DFU to an application. It is with this guide that I once added DFU to ble_app_blinky.

RE: Bootloader nRF52832 using SDK 15.0.3

gmwold — Tue, 04 Jul 2023 15:45:47 GMT

I managed to find a link https://devzone.nordicsemi.com/f/nordic-q-a/80396/nrf52-dk-failed-to-add-ble-ota-dfu-to-the-example-project-ble_app_uart/333881#333881 with code for ble_uart with dfu. The code is now working, I can update using the app once, but DfuTarg is no longer announced when running the ble_uart application

I've tried to disable all uart0, in case this is making problems for the DFU. This did not help anything. The code below is with the uart.

Hope you are able to help.

devzone.nordicsemi.com/.../5415.ble_5F00_app_5F00_uart_5F00_buttonless_5F00_dfu.zip

RE: Bootloader nRF52832 using SDK 15.0.3

gmwold — Mon, 03 Jul 2023 20:36:06 GMT

Sorry for not specifying so great. The merged file is correct. After updating using the app, readback from device has ff’s from address 00000ff8 to 00000fff.
is there a good example / description using buttonless dfu for the ble_app_uart? There seems to be something wrong with vectors or over writing essential data.

RE: Bootloader nRF52832 using SDK 15.0.3

Susheel Nuguru — Mon, 03 Jul 2023 18:50:30 GMT

Seems like something is wrong with the merged hex. In SDKv15.x, the value returned from 0XFF8 should not have been FFFFFFFFF