No deinit() method on DigitalInOut class

[chrisgilldc]

Good morning!

Trying to use HC-SR04 sensors via the AW9523 board. I'm trying to modify the hcsr04 library to accept the DigitalInOut objects from the AW9523 instance, but they don't have a deinit() method. This is counter to the notes in the AW9523 library, which say "this interface is exactly the same as the digitalio.DigitalInOut class". It's not, since at least one method is missing.

So either this library needs to be brought in line with the main digitalio.DigitalInOut class, or the notes should be updated to reflect that they're substantially the same but not 1:1 the same. I've love if it were the first, because then that makes this a drop-in replacement.

Thanks.

[ladyada]

hiya, fastest way to get it added is if you're able to add that function and submit a PR. especially since you're testing in a particular context. deiniting should just set the pin to be an input :)