GPIO stream not available ?

[Misuliaut]

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|---------------------------------|------------------------------------------- |
| Camera Model | D400 |
| Firmware Version | 05.12.15.50 |
| Operating System & Version | Win 10 |
| Platform | PC |
| SDK Version | 2.49.0 |
| Language | C# |
| Segment | Robot |

Issue Description

I'm trying to read GPIO data from the camera (D435). To do this I call config.EnableStream(Stream.Gpio), but I get "Couldn't resolve requests" when starting the pipeline.

Is this stream supported at all ?

[MartyG-RealSense]

Hi @Misuliaut A RealSense team member advised in #3001 (comment) in January 2019 that the GPIO pins were not programmable by the public.

Recently, a RealSense user in #9810 in October 2021 also tried to access the pins on a D435 using the C++ equivalent instruction config.enable_stream(RS2_STREAM_GPIO1) and likewise received a 'Couldn't resolve requests' message.

This error means that a stream configuration was requested that the RealSense SDK could not provide, either because the instruction was not understood (for example, because of a mistake in the code) or because the camera that was being used did not support that mode at the time that the request was made.

[MartyG-RealSense]

Hi @Misuliaut Do you require further assistance with this case, please? Thanks!

[Misuliaut]

No thank you. We wanted to use the gpio for synchronization between the camera and another (not camera) device, but it seems we will have to find other ways to solve this.

[MartyG-RealSense]

Thanks very much @Misuliaut for the update