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Can't configure trigger for edge triggering #12

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@nexysm

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@nexysm

I am using logic command in order to record a digital signal of about 19.2 kbaud and I want to set trigger in falling edge.
I tried this:
$1.50: trigger trigger 0=0xxxxxxx-1-0 st1 trigger 1=1xxxxxxx-0-1 st2

logic doesn't capture anything.
I also tried to reverse the logic:
$1.50: trigger trigger 0=1xxxxxxx-1-0 st1 trigger 1=0xxxxxxx-0-1 st2

Also, no 0 catches samples.

$1.50: trigger trigger 0=0xxxxxxx-0-1 st1 trigger 1=1xxxxxxx-1-0 st2

Captures the signal, but it complains about: Infinite triggers "pass" loop: 1 -> 1. In this case the digital signal is broken and not correctly shown as with the next command.

If I try with this trigger:
trigger 0=0xxxxxxx-0-0 st1
I get samples and I see the signal.

However, trigger 0=1xxxxxxx-0-0 st1 doesn't trigger logic although I would expect the same behavior as before.

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