I have this ESP32-cam chip and I'm trying to use the I2S adc mode to read some audio data from a general analog mic. I know on esp32, the default 8 adc channels on ADC1 are GPIOs 32 - 39, which none of these pins are the GPIOs on esp32-cam chip. There are a few ADC2 pins as GPIOs, but I need to use wifi at the same time.
So I'm thinking if it is possible to use adcAttachPin() or wire.begin() or other similar methods to attach the GPIO pins of esp32-cam to the I2S DMA ADC pins?
Thank you.