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kernell feezes

Posted by Nobody/Anonymous on October 31, 2006
Hi,

I am having strange problem (at least in my point of view).
When I do this:
__arm void vRPM_ISR ( void )
{
xNewRPM = xTaskGetTickCount();

whole freertos kernell freezes.
When I chanege it to this:
__arm void vRPM_ISR ( void )
{

xNewRPM = xTickCount;

everything runs well. So the problem must be in xTaskGetTickCount function in here:
taskENTER_CRITICAL(); and taskEXIT_CRITICAL();

any explanation appreciated
Thanks
Josef

RE: kernell feezes

Posted by Nobody/Anonymous on October 31, 2006
You point out the answer yourself - do not call API functions from ISR's unless they have FromISR at the end of the function name. Critical sections inside an ISR is not good.

RE: kernell feezes

Posted by Nobody/Anonymous on November 1, 2006
Hi,

Thank you for your reply. I thought that I have missed something.

thank you very much
Josef


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