Quote:
Originally Posted by bobski
...There's no reason to use both of them for the single injector signal...
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There is actually a reason. Those pins can be set up to trigger an interrupt on a rising signal or a falling signal, but not both at the same time (and still be able to tell the firmware if it was rising or falling). We need to be able to reliably detect the rising signal from the falling signal, with minimal processing overhead. That is how the injector pulse width is determined.