Spurious headphone detection interrupts
I thought one of them would have to be an output. Else I don't see where the reference voltage comes from. Since the codec is on the other side of a 10k (pull-up?) resistor, I figure that must be it. You could find out by plugging in a headphone plug and seeing if there's still a logical "high" at the codec.

If the codec GPIO is actually an input, then switching by the SOC interrupt seems redundant at best, a conflict at worst.

The whole thing doesn't make sense to me, I just don't see why the GPIO on the codec is necessary for this function.

I'm having a hard time reading the schematic on my phone (only option I have at the moment, and usually). But there is a separate schematic file that shows the jack.

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RE: Spurious headphone detection interrupts - by KC9UDX - 01-08-2021, 05:24 AM

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