I think you have that backwards. > As a special exception, the copyright holder of FreeRTOS gives you permission to link FreeRTOS with independent modules that

I think you have that backwards. > As a special exception, the copyright holder of FreeRTOS gives you permission to link FreeRTOS with independent modules that communicate with FreeRTOS solely through the FreeRTOS API interface, regardless of the license terms of these independent modules, and to copy and distribute the resulting combined work under terms of your choice It was GPL with an exception that allowed you link your app code to the OS, with your app becoming GPL. The performance metrics part was weird though. https://www.openhub.net/licenses/GPL-2-0-with-freertos-exception https://www.openhub.net/licenses/GPL-2-0-with-freertos-excep...