https://devzone.nordicsemi.com/f/nordic-q-a/126277/integration-of-legacy-application-to-ncs-bare-metal-systemHi, I have the following situation: I have a legacy C application that runs on the good old nRF5 SDK on NRF52840 with FreeRTOS. (No BLE on the application, but the bootloader is BLE DFU capable). I need to port this application to run on NRF54L15en-USTelligent Community 13Mon, 29 Dec 2025 10:10:27 GMThttps://devzone.nordicsemi.com/thread/557644?ContentTypeID=1Mon, 29 Dec 2025 10:10:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a277982b-9107-410d-b81f-083a3f0cd1d9Kenneth<p>Hello,</p> <p>I am not aware of any attempts of supporting FreeRTOS no, at least not yet. Not looked at the work that would need to be involved to make that happen. Maybe try to reach out the the FreeRTOS community if they are doing any attempts.</p> <p>For now the transition to the NCS-Bare Metal should make it must easier for anyone that has worked on the legacy nRF5 SDK:<br /><a href="https://docs.nordicsemi.com/bundle/nrf-bm-latest/page/migration/nrf5_bm_migration.html">https://docs.nordicsemi.com/bundle/nrf-bm-latest/page/migration/nrf5_bm_migration.html</a></p> <p>Novelbits have made a good guide on the NCS bare metal option in case that can be of somewhat help:<br /><a href="https://novelbits.io/nrf-connect-sdk-bare-metal-guide/">https://novelbits.io/nrf-connect-sdk-bare-metal-guide/</a>&nbsp;</p> <p>Kenneth</p><div style="clear:both;"></div>