Hw switch add

Description

hw_switch_id = hw_switch_add(hw_id_0, hw_id_1, hw_pos_n,callback)

switch_add is used to add a hardware switch. Every position on the switch should use one hardware input.

Return value

Argument	Type	Description
hw_switch_id	ID	This value can be used for further reference.

Arguments

#	Argument	Type	Description
1	hw_id_0	String	The is the reference to first switch input. You can choose to bind to an existing Hardware ID (Hardware_id_list).
2	hw_id_1	String	The is the reference to the second switch input. You can choose to bind to an existing Hardware ID (Hardware_id_list).
n	hw_id_n	String	The hw_id for all other positions you might need. This is limitless
n+1	callback	Function	This function will be called when the switch changed position.

Example

-- This function is called every time the switch has a new position
function switch_callback(position)
  print("The switch got changed to position " .. position)
end

-- Bind to Raspberry Pi 2, Header P1, Pin 38 and 40
hw_switch_add("RPI_V2_P1_38", "RPI_V2_P1_40", switch_callback)

Schematic example