2008-01-08 21:51:20 How to know rising or falling when both PF_EDGE and PF_BOTH setted
Wei Jiang (CHINA)
Message: 49375
Dear all,
My CPU is Blackfin561. .
I used an PFx as input and enable both rising and falling edge, my question is how to know rising or falling in the interrupt service function?
The manual said: "If any edge occurred, pin reads as 1; otherwise, pin reads as 0." So it seems that I can't read the Flag value registers to get the value..
Thanks,
Wei , Jiang
QuoteReplyEditDelete
2008-01-09 00:41:55 Re: How to know rising or falling when both PF_EDGE and PF_BOTH setted
Mike Frysinger (UNITED STATES)
Message: 49378 as you've discovered, it is not possible to know on BF561 and BF53x when you have both edges enabled
on newer parts, the hardware will expose the information, but not on older parts
QuoteReplyEditDelete
2008-01-09 23:36:32 Re: How to know rising or falling when both PF_EDGE and PF_BOTH setted
Wei Jiang (CHINA)
Message: 49423
Dear Mike,
Thanks a lot..