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- Touch Sensor
- ============
- Overview
- --------
- A touch-sensor system is built on a substrate which carries electrodes and relevant connections under a protective flat surface. When a user touches the surface, the capacitance variation is triggered and a binary signal is generated to indicate whether the touch is valid.
- ESP32 can provide up to 10 capacitive touch pads / GPIOs. The sensing pads can be arranged in different combinations, so that a larger area or more points can be detected. The touch pad sensing process is under the control of a hardware-implemented finite-state machine (FSM) which is initiated by software or a dedicated hardware timer.
- Application Examples
- --------------------
- - Touch sensor read example: :example:`peripherals/touch_pad_read`.
- - Touch sensor interrupt example: :example:`peripherals/touch_pad_interrupt`.
- API Reference
- -------------
- .. include:: /_build/inc/touch_pad.inc
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