Adding SB_CONFIG_BOOTLOADER_MCUBOOT=y, power consumption becomes very high

[666]

v2.8.0,nrf54l15,hello world demo (Add CONFIG_SERIAL=n to pri. conf),The normal compilation is 3uA, then add sysbuild.conf and write SB_CONFIG_BOOTLOADER_MCUBOOT=y

, and then compile again. The power consumption becomes 325uA, which is a bit high. Is this normal? Is there any way to downgrade the power consumption

[Vidar Berg]

Hello,

MCUBoot should not affect the idle current when the application is running. As a test, could you please try disabling the serial driver in MCUBoot to see if you still get the increased current draw?

To do this:

1. Create a folder named "sysbuild" in the project root directory.

2. Inside this folder, create a Kconfig fragment for MCUBoot by naming the file mcuboot.conf.

3. Add the following line to mcuboot.conf:

CONFIG_SERIAL=n

4. Perform a pristine build since we added a new configuration file

Best regards,

Vidar

[666]

It is effective，thanks.