Dear all, I using the STM3210E-EVAL board which is based on the ST microelectronics STM32f103 uController. I’m trying to use FreeRTOSV5.1.1 with IAR embedded workbench 5.20. Based on the Demo project, i tried to use xSemaphoreCreateCounting() function but got the following Linking Error:          Error[Li005]: no definition for "xQueueCreateCountingSemaphore" [referenced from F:OS_Projects         \_FreeRTOSFreeRTOSV5.1.1FreeRTOSDemo After digging a bit i found the following: 1. Inside semphr.h – there is this line     #define xSemaphoreCreateCounting( uxMaxCount, uxInitialCount )      xQueueCreateCountingSemaphore( uxMaxCount, uxInitialCount )     it seems that xSemaphoreCreateCounting( uxMaxCount, uxInitialCount ) does not have any      implementation at all.     Is this the reason i got the linking error which i mentioned above?     If not, can some let me know what would be the problem? 2. Does anyone know used xSemaphoreCreateCounting() function? if so, i would be happy to know     how?  Thanks in advanced Beja.

xQueueCreateCountingSemaphore() is defined in queue.c line 419 (version 5.2.0).  configUSE_COUNTING_SEMAPHORES must be defined.  It is used by some of the demo app tasks.

Thanks. I just saw it.