We have detected a very strange problem.
GPIO27 is multiplexed with I2C, but we use it as a gpio.
When we set to Hi this GPIO the microphone stops to work, it doesn’t sound. It’s like setting mute ON.
There is not any external connection between both signals.
We asked it to our distributor, and she says that maybe the pin cannot be used as a gpio. Is it possible? is it truth?
We haven’t found any documentation about it, and we are very confused…
Any idea about this problem?