Command reference

Every command HDC currently supports, grouped the way they’re implemented.

Core commands

Command	Syntax	Does
`STRING`	`STRING <text>`	Types text exactly as written.
`STRINGLN`	`STRINGLN <text>`	Types text, then presses Enter.
`FAST_STRING` (Pro)	`FAST_STRING <text>`	Types text via batched HID codes, at very high WPM.
`STRING_BLOCK`	`STRING_BLOCK … END_STRING`	Types multiple lines collapsed into one.
`DELAY`	`DELAY <ms>`	Pauses the script.
`SET_DELAY`	`SET_DELAY <ms>`	Sets fixed per-keystroke pacing.
`SET_SPEED`	`SET_SPEED <ms\|preset>`	Sets per-keystroke pacing via ms or a named preset.
`DEFINE`	`DEFINE <name> STR\|INT <value>`	Declares a compile-time constant.
`REM`	`REM <text>`	Comment — ignored by the compiler.
`LOOP`	`LOOP … END_LOOP`	Repeats a block (infinite form only, today).
`LED_ON` / `LED_OFF`	`LED_ON` · `LED_OFF`	Onboard status LED on/off.
`WAIT_FOR_BUTTON_PRESS`	`WAIT_FOR_BUTTON_PRESS`	Pauses until the Upload button is pressed.
`FUNCTION`	`FUNCTION name() … END_FUNCTION`	Defines a reusable named block.
Function call	`name()`	Runs a previously defined function.
`BUTTON_DEF`	`BUTTON_DEF … END_BUTTON`	Defines the on-press handler block.

Related commands are grouped into one runnable example where it makes sense; standalone commands get their own.


STRING Hello
STRINGLN Hello
FAST_STRING Hello
STRING_BLOCK
This block spans three source lines
but types as one.
END_STRING


DELAY 500
SET_DELAY 30
SET_SPEED $Human


DEFINE #NAME STR Hivefusion
STRINGLN Hello #NAME


LOOP
STRING .
DELAY 300
END_LOOP


LED_ON
DELAY 300
LED_OFF


STRING Waiting...
WAIT_FOR_BUTTON_PRESS
STRINGLN Button pressed, continuing.


FUNCTION greet()
STRINGLN Hello from a function!
END_FUNCTION

greet()
greet()


BUTTON_DEF
STRINGLN You pressed the button!
END_BUTTON

See Keyboard commands for the full key and modifier tables and examples.

Reserved for a future release — not available in the base H1 firmware today:

Name	Note
`SET_SPEED $Random`	Pro-tier variable-speed, human-like typing.
`ATTACKMODE`	Planned HID / CDC / OFF mode switching from within a script.
`INJECT_MOD`	Reserved modifier-injection keyword.
Serial / CDC scripting	Planned commands for scripting the device’s serial (USB CDC) channel directly.