Edge Capture

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originally posted by mendonca@May 30 2006, 08:18 PM

i'm using pio cores to change informations among processors. when i send some data from a cpu a to a cpu b, a also sends a flag signal to b. in b, its input pio (which receives that signal) is sensitive to either rising or falling edge. however, every time a sends data to b, it needs to toggle the value of flag (between 0 and 1) in order to b capture some edge.

i'd like to avoid these "toggles" (my application has 4 flags till now). is there some another way (another pio resource) to give notice b that a new data is avaliable to it?

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When you mean "sensitive to either rising or falling edge" you mean you&#39;ll raise a remote interrupt for every data you are sending to the other CPU?

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originally posted by mendonca@May 30 2006, 08:18 PM

another thing: if i use intensively internal pio cores can i have problems with the watchdog time? which ones? (as far i can see the pio cores use the avalon switch fabric.)

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I don&#39;t think you&#39;ll have such problems... the Avalon is basically a crossbar switch!

bye

Paolo