DM6467 external interrupts

Nir Aloni

From the DM6467 documentation, It is not very clear which GPIO pins can server as external interrupts sources. I am not sure if I understood correctly, but are GPIO0 through GPIO7 the possible external interrupt sources? are there any more?

Thank you

over 16 years ago

0 Juan Gonzales over 16 years ago

TI__Mastermind 37340 points

GPIO0 thru GPIO7 have their own dedicated ARM interrupt (see table 2 on http://focus.ti.com/lit/ug/sprueq8a/sprueq8a.pdf ); however, all GPIOs support interrupts... GPIOs higher than than 7 support interrupts thru banks, which means you will need to read regieters to determine which GPIO caused the interrupt. This is detailed in the GPIO User Guide: http://focus.ti.com/lit/ug/sprueq8a/sprueq8a.pdf

0 Brad Griffis over 16 years ago in reply to Juan Gonzales

TI__Guru*** 125430 points

FYI, I recently wrote the following articles related to GPIO which may also be of interest:

http://tiexpressdsp.com/index.php?title=Configuring_GPIO_Interrupts
http://tiexpressdsp.com/index.php?title=Avoiding_Double_Interrupts_with_the_GPIO_Peripheral
http://wiki.davincidsp.com/index.php/Configuring_GPIO_EDMA_Events

I hope you find them helpful.

Brad

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DM6467 external interrupts