Does it mean that analog inputs cannot be read from grove ports on Core 2? Do I need to enable the Port A first somehow or do I need to enable the clock (port 33). The documentation is quite sleek and I cannot wrap my head around this.

I have M5Stack Core 2. I connected the LM35 sensor to Gnd, Vcc and SDL ports using a grove connector cable. The I am reading the sample using analogRead(32). I am getting values around 1163 which does not seem to change at lower temperature. Without connection there is a different consultant value. Please help.