UPDOWN(9)

💖 UPDOWN(9) — HAL Component 💖

okay so bestie, welcome to updown, the HAL component that literally just... counts. up or down. with optional limits and wraparound behavior. she's simple, she's iconic, she's giving "I keep track of a number and I do it flawlessly" energy 💅

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✨ NAME ✨

updown — Counts up or down, with optional limits and wraparound behavior 🎀

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🌸 SYNOPSIS 🌸

loadrt updown [count=N|names=name1[,name2...]]

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🦋 FUNCTIONS 🦋

• updown.N — Process inputs and update count if necessary 🔥 (this is the moment, the main character function, she does the work)

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💜 PINS 💜

• updown.N.countup bit in — Increment count when this pin goes from 0 to 1 ⬆️
• updown.N.countdown bit in — Decrement count when this pin goes from 0 to 1 ⬇️
• updown.N.reset bit in — Reset count when this pin goes from 0 to 1 🔄
• updown.N.count s32 out — The current count 👑 (this is the number, the whole point, she's the star)

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🎀 PARAMETERS 🎀

• updown.N.clamp bit rw — If TRUE, then clamp the output to the min and max parameters. no going out of bounds, she stays in her lane bestie ✋
• updown.N.wrap bit rw — If TRUE, then wrap around when the count goes above or below the min and max parameters. Note that wrap implies (and overrides) clamp. so it's like, clamp but make it circulatory 🌀
• updown.N.max s32 rw (default: 0x7FFFFFFF) — If clamp or wrap is set, count will never exceed this number 🚫
• updown.N.min s32 rw — If clamp or wrap is set, count will never be less than this number 🚫

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🌈 AUTHOR 🌈

Stephen Wille Padnos — we love her, we thank her, periodt 🫶

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💅 LICENSE 💅

GPL — open source, slay, free to share, no cap ⭐

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and that's the whole page bestie!! 💖 LinuxCNC Documentation, 2026-03-17 — go forth and count responsibly, mwah 🧚✨