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AWR6443: Interrupt process on AWR6443

Part Number: AWR6443
Other Parts Discussed in Thread: SYSBIOS,

Hi,

Read the AWR6443 TRM and sysbios HWI source code in ti\sysbios\family\arm\v7r\vim, still not clear on the FIQ/IRQ process. Here need your help on  below questions.

(1)According to AWR6443 user manual, it have the description like "By hardware, Non Maskable FIQ are not reentrant."  but no information about IRQ. IRQ handler is implemented by TI drivers.

So FIQ cannot be nested, how about IRQ? Can you confirm that IRQ is disabled during all the execution of IRQ handler and re-entrant IRQ is not possible ?

(2)As we all known that, whether it is category 1 interrupt or category 2 interrupt, there will be latency time. I think that interrupt latency depends on TI interrupt handler implementation and configuration. So can you confirm this point? What is the maximum latency time of category 1 and category 2 interrupts ?

Andy

Thanks.