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Posted by Pim van Hezewijk on May 29, 2008

I'm experimenting for a couple of weeks now with FreeRTOS. I'm working with Keil Uvision and a LPC2138 microcontroller.
Now I have a problem with the function:
if( xSemaphoreTake( xMutex, ( portTickType ) 10 ) == pdTRUE )
A strange error occurs when the function prvLockQueue has been called.
When he wants to store R1 in R0, he goes into the D abt handler.
(I can't see the pxQueue anymore, so I don't know what happend with it)

The printscreen is over here: http://home.kabelfoon.nl/~vhzewijk/PrintScreen.jpg
I hope someone could help me.
By the way, if you need more information, please let me know.

Thanks in advance,

Best Regards,
Pim van Hezewijk

RE: prvLockQueue

Posted by Dave on May 29, 2008
Its difficult to say, but the first thing to check is that you are not just experiencing a stack overflow. Try allocating the task more stack.

Where did you get the Keil port from?

RE: prvLockQueue

Posted by Pim van Hezewijk on May 29, 2008
Thanks for your fast reply Dave,
I allocated more stack, but it still doesn't work.
I'm still working on the demo application...

Best Regards,

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