OTA DFU on NORA B1

[Jirik]

Hello,

I have a project working on Nora B1, which I am testing on nrf5340DK. It is based on the Peripheral UART Sample, programmed with nfr Connect SDK v1.9.1. Now I need to add the OTA DFU to update the program from the nrf Connect mobile app. I changed the prj.conf and main according to this tutorial

https://getwavecake.com/blog/adding-ota-dfu-to-a-nordic-zephyr-project/

It works perfectly, when I am testing it on the Development Kit, but it does not work at all on the Nora B1. The flash is succesful, but the BLE can't get initialised.

I tried a bit and it seems like the problem is caused by the line

CONFIG_BOOTLOADER_MCUBOOT=y

when I add this to the prj. conf, BLE does not work, even when I did not do any changes in the main.

Is there anything special I should take care about while configuring bootloader on the NoraB1?

Thanks a lot for any answer

[Menon]

Hello,

You might need to include the clock source for the mcuboot build as well. Could you try to enable the config CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y inside the mcuboot.config? For that, you can create a mcuboot folder inside the child image folder and include the config file there: child_image->mcuboot->mcuboot.config.

Kind Regards,

Abhijith

 

[Jirik]

Hello Abhijith,

thanks a lot for the tip. It unfortunately does not work and the problem remains.

One thing I realised: while compiling I got this warning:

warning: NRF53_RECOVERY_NETWORK_CORE (defined at
C:/ncs/v2.5.0/nrf/modules/mcuboot/boot/zephyr/Kconfig:130) was assigned the value 'y' but got the
value 'n'. Check these unsatisfied dependencies: (!NRF53_MULTI_IMAGE_UPDATE) (=n),
MCUBOOT_SERIAL_DIRECT_IMAGE_UPLOAD (=n). See
docs.zephyrproject.org/.../kconfig.html and/or look up
NRF53_RECOVERY_NETWORK_CORE in the menuconfig/guiconfig interface. The Application Development
Primer, Setting Configuration Values, and Kconfig - Tips and Best Practices sections of the manual
might be helpful too.

I defined the 

CONFIG_NRF53_MULTI_IMAGE_UPDATE=y

like it is in the sample from the Development Academy, but when I try to define 

CONFIG_MCUBOOT_SERIAL_DIRECT_IMAGE_UPLOAD in the prj.conf, it gives me Fatal error as unknown symbol.

when I define it in mcuboot.conf, it does not change anything and I still get the same warning.

Could it be the reason of this problem, and if it is that case, could you please help me to lose it?

Kind Regards

Jiri