I've been happily using a Digi2 Pro with a Pi 4B and Spotify Connect for a few weeks. I decided to add a tri-colour status LED which I attached to GPIO17 (for power) and GPIOs 5, 6 and 13 for RGB. The LED worked fine with a simple Python program but now my HifiBerry Digi2 Pro card doesn't work i.e. no music. In-fact when using command aplay -l the card doesn't show as a device anymore. Have I fried it somehow? Are there any diagnostics I can do to see if it is broken or not?
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HiFiBerry team My best guess is that you adding software that fiddles with the GPIO settings. Did you try again on a fresh installation without the GPIO stuff?
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Chris Cleverley I purchased a new SD card and did a fresh installation as suggested, operating system upwards. My HiFiBerry Digi2 Pro is now working again, thank you for the advice :-) I had no idea that GPIO settings could persist through a power cycle! Am I correct to assume that the Digi2 Pro uses the same GPIOs as the Digi+ Pro? I haven't been able to find any information about the GPIO usage of the newer cards e.g. Digi2 Pro, DAC2 Pro, DAC2 HD etc. Thanks in advance.
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HiFiBerry team It depends on what you're using. Some tools like pigpiod mess around with GPIO settings. Accessing GPIOs via the /sys filesystem should be completely reverted after a reboot.
Yes, the GPIOs are the same as on the Digi+ Pro.
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