Primitives

Contains Lisp primitive functions for hardware interaction. More...

Collaboration diagram for Primitives:

Functions
Object	uniot::primitive::dwrite (Root root, VarObject env, VarObject list)
Object	uniot::primitive::dread (Root root, VarObject env, VarObject list)
	Digital read primitive function for reading pin input state.
Object	uniot::primitive::awrite (Root root, VarObject env, VarObject list)
	Analog write primitive function for setting PWM output.
Object	uniot::primitive::aread (Root root, VarObject env, VarObject list)
	Analog read primitive function for reading analog input.
Object	uniot::primitive::bclicked (Root root, VarObject env, VarObject list)
	Button clicked primitive function for checking button click status.

Detailed Description

Contains Lisp primitive functions for hardware interaction.

Writes a digital value (HIGH/LOW) to the specified GPIO pin. Takes two arguments: pin index and boolean state. Returns the boolean state that was set. Throws an error if the pin is out of valid range.

Parameters

root	The Lisp environment root
env	The current environment object
list	List of arguments (pin number and state)

Return values

Object

Boolean value representing the set state

Function Documentation

aread()

Object uniot::primitive::aread	(	Root	root,
		VarObject	env,
		VarObject	list )

Analog read primitive function for reading analog input.

Reads an analog value from the specified GPIO pin. Takes one argument: pin index. Returns the integer value that was read (0-1023). Throws an error if the pin is out of valid range.

Parameters

root	The Lisp environment root
env	The current environment object
list	List of arguments (pin number)

Return values

Object

Integer value representing the read analog value

awrite()

Object uniot::primitive::awrite	(	Root	root,
		VarObject	env,
		VarObject	list )

Analog write primitive function for setting PWM output.

Writes an analog value (PWM) to the specified GPIO pin. Takes two arguments: pin index and integer value (0-1023). Returns the integer value that was set. Throws an error if the pin is out of valid range.

Parameters

root	The Lisp environment root
env	The current environment object
list	List of arguments (pin number and value)

Return values

Object

Integer value representing the set PWM value

bclicked()

Object uniot::primitive::bclicked	(	Root	root,
		VarObject	env,
		VarObject	list )

Button clicked primitive function for checking button click status.

Checks if a button with the specified ID has been clicked. Takes one argument: button ID. Returns true if the button was clicked (and resets the click status). Throws an error if the button ID is invalid.

Parameters

root	The Lisp environment root
env	The current environment object
list	List of arguments (button ID)

Return values

Object

Boolean value indicating if button was clicked

dread()

Object uniot::primitive::dread	(	Root	root,
		VarObject	env,
		VarObject	list )

Digital read primitive function for reading pin input state.

Reads a digital value (HIGH/LOW) from the specified GPIO pin. Takes one argument: pin index. Returns the boolean state that was read. Throws an error if the pin is out of valid range.

Parameters

root	The Lisp environment root
env	The current environment object
list	List of arguments (pin number)

Return values

Object

Boolean value representing the read state

dwrite()

Object uniot::primitive::dwrite	(	Root	root,
		VarObject	env,
		VarObject	list )