hi Nordic.. i am trying to follow this link https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/exploring-the-benefits-of-mcuboots-compressed-image-support .. in order to check how much compression i can get on my image (i am working with ncs v2.8.0 for an nrf52840 device and i m already using DFU via BLE).. i added the relevant configs to the sysbuild.conf but no indication for compression .. i even changed the secondary image partition size just in case by 4kb .. then i see this warning
warning: MCUBOOT_COMPRESSED_IMAGE_SUPPORT (defined at /xxx/ncs/v2.8.0/nrf/sysbuild/Kconfig.mcuboot:47) was assigned the value 'y' but got the value 'n'. Check these unsatisfied dependencies: MCUBOOT_MODE_OVERWRITE_ONLY (=n). See http://docs.zephyrproject.org/latest/kconfig.html#CONFIG_MCUBOOT_COMPRESSED_IMAGE_SUPPORT and/or look up MCUBOOT_COMPRESSED_IMAGE_SUPPORT 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. and i am not sure yet what overwrite my "SB_CONFIG_MCUBOOT_MODE_OVERWRITE_ONLY=y" that i have in my app/sysbuild.conf
.. any ideas what am i missing ?
also, read that compressed DFU is not supported for nrf52832 (https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/exploring-the-benefits-of-mcuboots-compressed-image-support#:~:text=The%20feature%20is%20currently%20in%20an%20experimental%20state%2C%20and%20it%20supports%20the%20following%20SoCs%3A%20nRF54L15%2C%C2%A0nRF5340%2C%20and%20nRF52840.), is it still the case ?
hope to read you soon
best regards
Ziv
