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FreeRTOS Support ArchiveThe FreeRTOS support forum is used to obtain active support directly from Real Time Engineers Ltd. In return for using our top quality software and services for free, we request you play fair and do your bit to help others too! Sign up to receive notifications of new support topics then help where you can.
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mutex semaphorePosted by Robert Brock on April 29, 2009 My question is related to semaphores. I am playing with the ATMega323_WinAVR demo. I looked up the mutex semaphore in the API reference, copied the mutex example into the demo, and compiled it. Got an error complaining about an "undefined reference to xQueueCreateMutex". If I drop in a binary semaphore is compiles just fine. I have queue.c compiled and queue.h included. Again, I'm sure I'm just missing something simple. Any ideas? RE: mutex semaphorePosted by Samuel Tardieu on April 29, 2009 Did you define configUSE_MUTEXES in your FreeRTOSConfig.h ? RE: mutex semaphorePosted by Robert Brock on April 30, 2009 Good call. That's all it took. But now my question is ... how should I have known this? The FreeRTOSConfig.h says "THESE PARAMETERS ARE DESCRIBED WITHIN THE 'CONFIGURATION' SECTION OF THE FreeRTOS API DOCUMENTATION AVAILABLE ON THE FreeRTOS.org WEB SITE." But I can't find a "Configuration" section. What are they talking about? RE: mutex semaphorePosted by sotd on April 30, 2009 http://www.freertos.org/a00110.html RE: mutex semaphorePosted by Prince Chauhan on November 21, 2012 i have the same problem
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