Delay in Entering Application After Reset nrf5340

[Lavanya_Manohar]

we are facing an issue with our nRF5340-nrf7002 custom device where, after a reset, it takes approximately 3-5 seconds to enter the application. This delay seems to be occurring during the bootloader stage. We would like your support in resolving this issue, as it impacts the performance of our application.

Could you please advise on solutions or steps we can take to eliminate this delay?

LOG 

2024-10-22 17:07:16.068000 I: w25q32jv@0: 4 MiBy flash
2024-10-22 17:07:16.073000 *** Booting nRF Connect SDK v3.5.99-ncs1-1 ***
2024-10-22 17:07:16.075000 I: Starting bootloader
2024-10-22 17:07:16.080000 I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
2024-10-22 17:07:16.088000 I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
2024-10-22 17:07:16.093000 I: Boot source: none
2024-10-22 17:07:16.097000 I: Image index: 0, Swap type: none
2024-10-22 17:07:18.607000 I: Bootloader chainload address offset: 0x20000
[00:00:00.184,814] <err> net_if: Cannot join solicit node address ff02::1:ff00:1 (-115)
2024-10-22 17:07:19.090000 --- 9 messages dropped ---
2024-10-22 17:07:19.094000 [00:00:00.184,844] <inf> net_config: Running dhcpv6 client...
2024-10-22 17:07:19.097000 [00:00:00.188,629] <inf> main: Node Sensor!

Here I share my config files. And we using version 2.6.1.

app_conf_files.zip

[Amanda Hsieh]

Hi,

we are facing an issue with our nRF5340-nrf7002 custom device where, after a reset, it takes approximately 3-5 seconds to enter the application.

Do you see the same issue on nRF7002DK?

Could you try your board with zephyr/samples/subsys/mgmt/mcumgr/smp_svr which will include mcuboot, and see what you get?

Could you please advise on solutions or steps we can take to eliminate this delay?

You can refer to this post. 

Regards,
Amanda H.

[Lavanya_Manohar]

Hi Amanda,
Thankyou for your response.

Amanda Hsieh said:

Could you try your board with zephyr/samples/subsys/mgmt/mcumgr/smp_svr which will include mcuboot, and see what you get?

I have check this sample to build, but facing build error. Here I share the log.
SMP_build_log.zip

Amanda Hsieh said:

Do you see the same issue on nRF7002DK?

In dk also we facing same delay.

[Amanda Hsieh]

Try this smp_svr_spi.7z for nRF7002DK.