Re: mode2 shows output, irrecord fails (using the remote out port of an amplifier)

On Fri, Mar 06, 2020 at 09:29:40AM +0100, Bengt Martensson wrote:
> Nice that it works now (I have not tried it myself). My gutfeeling is that
> is would probably be best to turn that driver into a /dev/lirc device, but I
> am not the expert here. Please keep us posted.

Not quite sure what you mean, gpio-ir-recv provides a /dev/lircX interface
that'll work just fine with lirc.

> @Hias:
> nice work. But for the record: I checked the Marantz "remote out" some 15
> years ago, long before the RPi was invented. It *is* active low -- there is
> no "likely" in the equation.

I can't really comment on the Marantz as I don't have one heere, but
something doesn't seem to quite add up:

TSOP etc receivers have open-collector / active-low outputs and that's what
gpio-ir is set up for by default. Since we saw inverted signals with the
setup the signal on the gpio pin must have been active-high.

so long,

Hias