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Interrupt routing modification on the fly

Question asked by Dziki on Feb 14, 2014
Latest reply on Feb 19, 2014 by Harshit.Gaharwar

Hello,

 

Please advise if the following is possible?

 

I have a external port chained DMA that takes atleast 33k cycles and while ongoing would like to temporarily disconnect External Port DMA1 from P13I(default), use P13I for the HW accelerator interrupt ACC0I and then reconnect it way before the next eport dma interrupt occurs. ACC0I gets triggered as I expect but after reconnecting EPDM1I to P13I while dma is in progress, the interrupt isn't triggered anymore. Ideally I should use separate programmable interrupts but almost all are in use and given that the accelerator is triggered in the eport DMA ISR this seems to be the way to go (if possible).

 

Thanks

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