Module touch

Available on crate feature unstable only.

Capacitive Touch Sensor

Overview

The touch sensor peripheral allows for cheap and robust user interfaces by e.g., dedicating a part of the pcb as touch button.

Examples

let touch_pin0 = peripherals.GPIO2;
let touch = Touch::continuous_mode(peripherals.TOUCH, None);
let mut touchpad = TouchPad::new(touch_pin0, &touch);
// ... give the peripheral some time for the measurement
let touch_val = touchpad.read();

Implementation State:

Mostly feature complete, missing:

• Touch sensor slope control
• Deep Sleep support (wakeup from Deep Sleep)

Structs

Continuous

Marker struct for the touch peripherals continuous reading mode. In the technical reference manual, this is referred to as “start FSM via timer”.

OneShot

Marker struct for the touch peripherals manual trigger mode. In the technical reference manual, this is referred to as “start FSM via software”.

Touch

This struct marks a successfully initialized touch peripheral

TouchConfig

Configurations for the touch pad driver

TouchPad

A pin that is configured as a TouchPad.

Enums

ThresholdMode

Touchpad threshold type.

Traits

TouchMode

A marker trait describing the mode the touch pad is set to.