Hi everyone, I'm about to get my first M5Stack, and for the main use I have for it I'd need capacitive inputs, or at least 3 of the 10 available on the esp32.
In the image below (from the esp32 datasheet), you can see there are 10 GPIOs capable of getting capacitive input, named from TOUCH0 to TOUCH9.
Looking at the schematics, it seems that a good part of this inputs are already dedicated to some other function, namely
for the LCD display
for the SD card.
The remaining GPIOs available are 0,2,12,13,15; and they are all marked as "IO" as alternative function in the M-Bus definition of the schematic (see below)
Of these, only GPIO0 seems to be dedicated to some hardwired function (Auto-Download), while also having a pullup resistor, while the rest of them don't seem to be bound to anything.
Can anybody confirm if the only available pins for touch input are 2,12,13,15 (and possibly 0) ? Or, are they also unavailable for some other reason?
Thanks everyone for your time!