xpeace
xpeace
$ git clone https://github.com/virtualabs/btlejack.git $ cd btlejack $ python3 setup.py sdist $ sudo pip3 install dist/btlejack-2.0.0.tar.gz
Recent AI Thinker boards V2.2 2957 are using A1S designs where the AC101 was replaced by the ES8388 eventually these are the wrong boards for this A1S version. It could...
Eventually GPIO 21 needs to be activated to enable the amp... Still trying to get in contact with AI Thinker... not much success lately... The A1S was so much better...
Additionally I`ve found this pdf reflecting changes in the A1S board... https://www.docdroid.net/L6LX9SK/esp32-a1s-esv23zh-cnen-pdf but I think they left out the correct values when describing I²C / I²S values... for the esp-adf...
Most recent V2.3 pdf... https://docs.ai-thinker.com/_media/esp32-a1s_v2.3_specification.pdf
Apart from headphone recognition I got all the functions I need working. To get max volume from the mic of the ES8388 unit it requires to enable AGC.
I think the question is not about the amp, to increase the mic input sensitivity AGC (Automatic Gain Control) needs to be enabled. Unfortunately it is not possible to increase...