Due to changes in the microphone circuit (LR pin) the speech recognition library doesn't work on new versions of MAIX Bit and probably MAIX Go.
This PR only solve the problem with MAIX Bit-MIC.
It's necessary to check the course of action for Maix-Go V2 (new board/variant?).
Due to changes in the microphone circuit (LR pin) the speech recognition library doesn't work on new versions of MAIX Bit and probably MAIX Go. This PR only solve the problem with MAIX Bit-MIC. It's necessary to check the course of action for Maix-Go V2 (new board/variant?).