---
name: "xhc_hb04_util"
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/xhc_hb04_util"
---

# xhc\_hb04\_util(9)

xhc-hb04 convenience utility

## NAME

xhc\_hb04\_util - xhc-hb04 convenience utility

## SYNOPSIS

**loadrt xhc\_hb04\_util \[count=*N*\|names=*name1*\[,*name2...*\]\]**

## DESCRIPTION

Provides logic for a start/pause button and an interface to **halui.program.is\_paused**, **is\_idle**, **is\_running** to generate outputs for **halui.program.pause**, **resume**, **run**.

Includes 4 simple lowpass filters with **coef** and **scale** pins.  The coef value should be 0 \<= coef \<=1, smaller coef values slow response.  See the lowpass manpage for calculating the filter time constant ($ man lowpass).

## FUNCTIONS

- **xhc-hb04-util.***N* (requires a floating-point thread)

  ## PINS

- **xhc-hb04-util.*N*.start-or-pause bit in**

  - **xhc-hb04-util.*N*.is-paused bit in**

  - **xhc-hb04-util.*N*.is-idle bit in**

  - **xhc-hb04-util.*N*.is-running bit in**

  - **xhc-hb04-util.*N*.pause bit out**

  - **xhc-hb04-util.*N*.resume bit out**

  - **xhc-hb04-util.*N*.run bit out**

  - **xhc-hb04-util.*N*.in0 s32 in**

  - **xhc-hb04-util.*N*.in1 s32 in**

  - **xhc-hb04-util.*N*.in2 s32 in**

  - **xhc-hb04-util.*N*.in3 s32 in**

  - **xhc-hb04-util.*N*.out0 s32 out**

  - **xhc-hb04-util.*N*.out1 s32 out**

  - **xhc-hb04-util.*N*.out2 s32 out**

  - **xhc-hb04-util.*N*.out3 s32 out**

  - **xhc-hb04-util.*N*.scale0 float in (default: *1.0*)**

  - **xhc-hb04-util.*N*.scale1 float in (default: *1.0*)**

  - **xhc-hb04-util.*N*.scale2 float in (default: *1.0*)**

  - **xhc-hb04-util.*N*.scale3 float in (default: *1.0*)**

  - **xhc-hb04-util.*N*.coef0 float in (default: *1.0*)**

  - **xhc-hb04-util.*N*.coef1 float in (default: *1.0*)**

  - **xhc-hb04-util.*N*.coef2 float in (default: *1.0*)**

  - **xhc-hb04-util.*N*.coef3 float in (default: *1.0*)**

  - **xhc-hb04-util.*N*.divide-by-k-in float in**

  - **xhc-hb04-util.*N*.divide-by-k-out float out**

  - **xhc-hb04-util.*N*.k float in (default: *1.0*)**

  ## AUTHOR

Dewey Garrett

## LICENSE

GPL