I/O Mirroring

jeffrey2399 · ‎2016-09-26

Posted on September 26, 2016 at 16:23

I need to simply capture an input level and then output the same logic level as soon as possible on another pin.

This can be simply done with EXTI, but I was wondering if there is a passive peripheral based solution that could be done without software intervention.

I was wondering if one of the TIMERs could be re-purposed this way or some other peripheral?

Tesla DeLorean · ‎2016-09-26

Posted on September 26, 2016 at 17:33

Here we tend to use wire to achieve such effects.

TIM units would tend to divide (ie /2)

DMA doesn't really have the read/write functionality desired, and doesn't support bit-banding.

EXTI could be done quite efficiently.

What latency exactly are you looking for?

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Code Wrangler · ‎2017-09-24

Posted on September 24, 2017 at 08:42

Clive One wrote:

Here we tend to use wire to achieve such effects.

LOL @ dry British humour...

🙂