1- Fill the FreeRTOSSource folder with the FreeRTOS specific files you will need.There should be also a copy of Port.c, Portmacro.c and the heap_n.c files. Port.c and Portmacro.c can be found at \ \FreeRTOSV6.1.0\Source\portable\IAR\ARM_CM3. The MemMang folder which can also be found at \FreeRTOSV6.1.0\Source\portable\MemMang holds heap_1.c, heap_2.c and heap_3.c.
2- Replace SVCHandler, PendSVHandler and the SysTickHandler in the startup file with the FreeRTOS specific handlers:
SVCHandler
-> vPortSVCHandler
PendSVHandler
-> xPortPendSVHandler
SysTickHandler -> xPortSysTickHandler3- check the CPU Clock in FreeRTOSConfig.h