Re: [PATCH libgpiod v5 4/4] dbus: add the D-Bus daemon, command-line client and tests

["Sverdlin, Alexander" <alexander.sverdlin@xxxxxxxxxxx>]

On Mon, 2024-10-28 at 20:44 +0100, Bartosz Golaszewski wrote:
> > I think I've found something else, but I didn't have time to look into it deeper:
> > 
> > $ gpiocli info POLA_RS485_2
> > gpiochip0   2:  "POLA_RS485_2"          [used,consumer="gpio-manager",managed="request14",output,push-pull]
> > $ gpiocli reconfigure --input --both-edges request14
> > gpiocli reconfigure: Failed to reconfigure lines: GDBus.Error:io.gpiod1.ReconfigureFailed: failed to reconfigure lines: No such device or address
> > $ gpiocli reconfigure --input request14
> > $ gpiocli reconfigure --input --both-edges request14
> > gpiocli reconfigure: Failed to reconfigure lines: GDBus.Error:io.gpiod1.ReconfigureFailed: failed to reconfigure lines: No such device or address
> > 
> > journal:
> > gpio-manager[3043]: failed to reconfigure GPIO lines on request '/io/gpiod1/requests/request14': failed to reconfigure lines: No such device or address
> > 
> > $ gpiocli info POLA_RS485_2
> > gpiochip0   2:  "POLA_RS485_2"          [used,consumer="gpio-manager",managed="request14",input]
> > 
> > For me it happens with all GPIOs I've tried, I can reconfigure output to input,
> > but not set edge-detection, neither simultaneously, nor after output->input configuration.
> > However I don't have any problems to configure edge-detection if I do "gpiocli request".
> > 
> > Just for the case it rings any bells, otherwise I'll look into it in the coming days...
> > 
> 
> Does your driver support edge detection? Does it work with the
> first-time request? Does it work with gpiomon without going through
> the manager?

Indeed! You are right again! It's the driver not supporting edge detection!

I've just performed the same operation with a proper chip:
$ gpiocli reconfigure --input --both-edges request4
$ echo $?
0

Thanks for you patience and quick support Bartosz!

PS. Maybe it's an idea for different error code in this case...

-- 
Alexander Sverdlin
Siemens AG
www.siemens.com