Check which GPIO pins file to use on a Raspberry Pi 5 #592
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…s can be loaded from. Before version 6.6.45 it was gpiochip4, and after that version it is gpiochip0. This commit checks which file exists and loads from those instead.
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When the Raspberry Pi 5 was released, the file to read pins from was changed to
gpiochip4. After updating to version version 6.6.45 it was changed back togpiochip0(same as Raspberry Pi 4 and earlier). This commit checks which file exists and loads from that one instead.Without this change, if a new application is made today on a version of the Raspberry Pi 5 Kernel 6.6.45 or newer, the app will crash when trying to load pins, with exception text "Unknown GPIO chip gpiochip4".