Cypress Board Analog Input Help Needed

[Tom Bottiglieri]

I saw the same behavior with last year's and this year's firmware. Do you have any signals running to the other inputs, or just the one pot? I ended up pulling the rest up manually last year because we were using some of the analog input lines for push button switches (ran out of IO) and the joystick moving to one side would pull the rest down a bit and trigger the switch. This year I just left them because we aren't using any other analog inputs either than 2 pots for our joysticks.

Is it common for a floating ADC input to swing with the other ports? It seems like this is caused by some high impedance connection between the input pins.