GPIO34-39 are not directly usable as floating inputs

Question

GPIO34-39 are not directly usable as floating inputs

sapir opened this issue 4 years ago · comments

dp.GPIO.split().gpio34

is a GPIO34<Input<Floating>>, but I tried reading from it without calling into_floating_input() and got 0. into_floating_input() fixed it. This may also apply to other pins as well; I ran into these because they don't have pullups/pulldowns, so I have to use them as floating pins anyway.

Arjan Mels · Answer 1 · Mon Jun 22 2020 22:53:10 GMT+0800 (China Standard Time)

I will check the default assumed states to fix this.

Arjan Mels · Answer 2 · Mon Jun 22 2020 23:57:27 GMT+0800 (China Standard Time)

Addressed by #36. Chosen to make all pin types Unknown by default: the state can change depending on the bootloader etc, so best not to trust on the defaults.

Arjan Mels · Answer 3 · Thu Jun 25 2020 05:57:36 GMT+0800 (China Standard Time)

#36 is merged, should be ok to close now.