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[FreeRTOS Home] [Live FreeRTOS Forum] [FAQ] [Archive Top] [August 2011 Threads] Bug with vCoRoutineSchedule()Posted by D-Kure on August 22, 2011 Hi All,
I hit what I think is a bug with the CoRoutine Scheduler.
The bug is this.
Place vCoRoutineSchedule() in vApplicationIdleHook(). Create one task, that calls while (1) vTaskDelay(10); Watch the board crash.
The problem with this arcitecture is that a co-routine must be created before calling vCoRoutineSchedule(). This is because vCoRoutineSchedule() depends on prvInitialiseCoRoutineLists(), which is only called by xCoRoutineCreate().
However from the code in xCoRoutineCreate() I can see no need for it calling prvInitialiseCoRoutineLists(), instead I think that prvInitialiseCoRoutineLists() should be called by vTaskStartScheduler().
The reason I have the architecure above is so that I can initialise hardware with the use a vTaskDelay() when waiting for hardware to come up. After hardware is initialised I then start worker tasks, and in this case I start a watchdog worker co-routine.
Richard what do you think of the problem & solution? If you don't really like the solution I am open to other ideas. Alternatively could you please place a mention somewhere in the API documentation that a co-routine must be created BEFORE calling vCoRoutineSchedule().
Regards Paul
RE: Bug with vCoRoutineSchedule()Posted by Richard on August 22, 2011 I will have to take a look at it. Co-routines don't get used that often, and I think all the examples create the co-routines before the scheduler is started. I would be grateful if you could open a bug tracker (in SourceForge) for this so it doesn't get lost until I get time to look at it.
Regards.
RE: Bug with vCoRoutineSchedule()Posted by D-Kure on August 22, 2011 Richard,
You are correct saying all the examples create co-routines before starting the scheduler. So hopefully not many people have hit this bug.
I'll post it on the bug tracker and place a link here so the two can be married up.
RE: Bug with vCoRoutineSchedule()Posted by D-Kure on August 22, 2011 Bug is on the tracker here: https://sourceforge.net/tracker/?func=detail&aid=3396255&group_id=111543&atid=659633
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