---
name: "multiclick"
section: "9"
platform: "linux"
package: "linuxcnc-uspace"
version: "1:2.9.4-2+deb13u1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/multiclick"
---

# multiclick(9)

Single-, double-, triple-, and quadruple-click detector

## NAME

multiclick - Single-, double-, triple-, and quadruple-click detector

## SYNOPSIS

**loadrt multiclick \[count=*N*\|names=*name1*\[,*name2...*\]\]**

## DESCRIPTION

A click is defined as a rising edge on the 'in' pin, followed by the 'in' pin being True for at most 'max-hold-ns' nanoseconds, followed by a falling edge.

A double-click is defined as two clicks, separated by at most 'max-space-ns' nanoseconds with the 'in' pin in the False state.

I bet you can guess the definition of triple- and quadruple-click.

You probably want to run the input signal through a debounce component before feeding it to the multiclick detector, if the input is at all noisy.

The '\*-click' pins go high as soon as the input detects the correct number of clicks.

The '\*-click-only' pins go high a short while after the click, after the click separator space timeout has expired to show that no further click is coming.  This is useful for triggering halui MDI commands.

## FUNCTIONS

- **multiclick.***N*

  Detect single-, double-, triple-, and quadruple-clicks

## PINS

- **multiclick.*N*.in bit in**

  The input line, this is where we look for clicks.

- **multiclick.*N*.single-click bit out**

  Goes high briefly when a single-click is detected on the 'in' pin.

- **multiclick.*N*.single-click-only bit out**

  Goes high briefly when a single-click is detected on the 'in' pin and no second click followed it.

- **multiclick.*N*.double-click bit out**

  Goes high briefly when a double-click is detected on the 'in' pin.

- **multiclick.*N*.double-click-only bit out**

  Goes high briefly when a double-click is detected on the 'in' pin and no third click followed it.

- **multiclick.*N*.triple-click bit out**

  Goes high briefly when a triple-click is detected on the 'in' pin.

- **multiclick.*N*.triple-click-only bit out**

  Goes high briefly when a triple-click is detected on the 'in' pin and no fourth click followed it.

- **multiclick.*N*.quadruple-click bit out**

  Goes high briefly when a quadruple-click is detected on the 'in' pin.

- **multiclick.*N*.quadruple-click-only bit out**

  Goes high briefly when a quadruple-click is detected on the 'in' pin and no fifth click followed it.

- **multiclick.*N*.state s32 out**

  ## PARAMETERS

- **multiclick.*N*.invert-input bit rw (default: *FALSE*)**

  If FALSE (the default), clicks start with rising edges.  If TRUE, clicks start with falling edges.

- **multiclick.*N*.max-hold-ns u32 rw (default: *250000000*)**

  If the input is held down longer than this, it's not part of a multi-click.  (Default 250,000,000 ns, 250 ms.)

- **multiclick.*N*.max-space-ns u32 rw (default: *250000000*)**

  If the input is released longer than this, it's not part of a multi-click.  (Default 250,000,000 ns, 250 ms.)

- **multiclick.*N*.output-hold-ns u32 rw (default: *100000000*)**

  Positive pulses on the output pins last this long.  (Default 100,000,000 ns, 100 ms.)

## AUTHOR

Sebastian Kuzminsky

## LICENSE

GPL