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Hi Richard,
I've been doing a bit of digging on this and it is not as clear cut as it seems.
There is a potential issue with Cortex systems where the stack is not 8 byte aligned and you call functions with 64 bit parameters. The API specifies that call stacks between modules must be 8 byte aligned but depending on the Cortex model, this is not necessarily guaranteed. The following...
2012-12-13 04:25:02 PST in FreeRTOS Real Tim...
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Ah! I missed that fact on my first scan through the exception handling section of the Cortex docs I have.
Thanks for the quick response on a Saturday :)
Regards,
Peter.
2012-12-08 06:35:19 PST in FreeRTOS Real Tim...
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I've been using FreeRTOS with the GNU compiler on a Microsemi (Actel) A2F200/A2F500 system which is Cortex M3 based. Whilst looking at the code for the xPortSysTickHandler I was puzzled as to why the function, which is an interrupt handler, was declared as void xPortSysTickHandler( void ). Why is it not __attribute__((__interrupt__)) void xPortSysTickHandler( void )?
Regards,
Peter.
2012-12-08 05:00:56 PST in FreeRTOS Real Tim...
