capsensor with analog mux | Cypress Semiconductor
capsensor with analog mux
I would like to use a circle type electrode as both button type capsensor and other use.
so, I tried use a amux to change path to the circle type electrode.
if amux set 0, the path is ( first setting )
CapSense_CSD -> mux -> the circle type electrode
if amux set 1, the path is ( second setting )
another circuit -> mux -> the circle type electrode
the problem is.. when i use the first setting the capsensor button shows always ON state.
when mux is disabled, capsensor works fine. so I think activated mux should changes capsensor working condition.
I have thought that the mux is just switch.... the above condition says another properties of mux must be exist..