atxmega128a3u freeRTOS – lwip 1.4.1 breaks usart

hi, i’am trying to port FreeRTOS + lwip to atxmega128a3u and almost every thing is working fine, only my uart wont fire up when i compile my project with lwip files included, what can be the cause of this ? Any help would be appreciated. withouth lwip files uart is working great with lwip files i just get one character “?” and nothing else, tasks are still working fine. lwip is not initialized in my project, only compiled. i’am using microchip: atxmega128a3u freeRTOS 8.2 lwip 1.4.1

atxmega128a3u freeRTOS – lwip 1.4.1 breaks usart

Sorry no idea, but if lwIP works by itself, and the UART works by itself, but the two don’t work together, it is probably not a FreeRTOS issue.