OTA - Not working in Zephyr but works in SoftDevice

[Neeraj Dhekale]

Hello,

I am using Celium device's BE33 (nRF52833 based) Click here for datasheet. there are crystal pins exposed in this controller but I dont want to use external crystal so I have added below to prj.conf

CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y
CONFIG_CLOCK_CONTROL_NRF_K32SRC_500PPM=y

I am trying to implement https://getwavecake.com/blog/adding-ota-dfu-to-a-nordic-zephyr-project/ This example which is a reference of Nordic/Zephyr/samples/bluetooth/peripheral_hr example.

Here I am facing a boot problem. Once I set CONFIG_BOOTLOADER_MCUBOOT=y this problem begins. I need to touch to the crystal pins once to get started otherwise it won't start on its own. But when I am using softdevice DFU example it works well without the need to touch the crystal pins. why so ? Am I doing anything wrong?

Thanks in advance.

Regards,

Neeraj Dhekale

[Amanda Hsieh]

Hi, 

Try to create child_image/mcuboot.conf and add those configs to the mcuboot.conf.

Regards,
Amanda H.

[Neeraj Dhekale]

Hello Amanda,

Thanks for your reply.

Could you please help me to guide me on how to create a child image? I tried creating a folder in root directory and mcuboot.conf inside it with configuration. but I am not able to link it. While making the build it is not considering the mcuboot.

Also tried to copy subsys example of smp_svr into root and tried to map it with below code in CMakeLists.txt

# SPDX-License-Identifier: Apache-2.0

cmake_minimum_required(VERSION 3.20.0)
set(mcuboot_CONFIG_BOOT_SIGNATURE_KEY_FILE \"${CMAKE_CURRENT_SOURCE_DIR}/priv.pem\")

find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
project(peripheral_hr)

FILE(GLOB app_sources src/*.c)
target_sources(app PRIVATE
  ${app_sources}
  )
  add_child_image(
    NAME smp_svr
    SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/smp_svr
)
zephyr_library_include_directories(${ZEPHYR_BASE}/samples/bluetooth)

But it shows error to add_child_image function in CMakeLists.txt file.

Thanks and regards,

Neeraj Dhekale

[Amanda Hsieh]

Just create a folder under the application like this

-Amanda H.

[Neeraj Dhekale]

Hello,

I tried to implement and when I click on the build option it goes into an infinite loop. it continuously keeps building without any error. Here is screenshot attached for your reference.

Please help. am I doing anything wrong?

Thanks and regards,

Neeraj Dhekale

[Amanda Hsieh]

Not sure what is wrong. 

Try to delete the build configuration and create it again. 

-Amanda H.