Timer generate a delayed pulse with same width as input

[Alex Z]

Posted on August 02, 2017 at 20:25

Hi all, is it possible to use timer to capture the input pulse, and generate the output pulse with same width and a certain delay.

I have tried use one pulse mode with connect input on two channel, one trigger with rise edge and one with falling. but it did not work.

Thanks all for help!

[Tesla DeLorean]

Posted on August 02, 2017 at 20:42

Pretty sure one-pulse isn't going to work, the TIM has a single counting element, which you'd want in maximal mode.

Time stamp the input edges, and use toggle of place output edges ie CCR = CNT + x, CNT + y

[waclawek.jan]

Posted on August 02, 2017 at 22:55

Nice challenge. I believe it could be made to run with no software (except setup) with two coupled timers and a DMA.

JW

[waclawek.jan]

Posted on August 02, 2017 at 22:58

Clive's trick with toggle would make it doable with your method on a single timer, but only in the special case that the pulse is guaranteed to last longer than the delay (as is the depicted case).

JW