ANALOG JOYSTICK SENSOR

Specification

What		Comments
Identifier	ANALOG_JOYSTICK
Interface	2 ADC 1 GPIO	ADC 1: X signal ADC 2: Y signal GPIO : SW signal (switch)
Provides	x	-1: left movement 0: no movement 1: right movement
	y	-1: up movement 0: no movement 1: down movement
	sw	0: switch released 1: switch pressed
Properties	none
Callbacks?	yes

Notes

• Hardware pull-ups are not required for switch.

Code

-- Attach a joystick connected as
-- x external ADC (ADC1115) / channel 0
-- y external ADC (ADC1115) / channel 1
-- sw (switch) GPIO26
s = sensor.attach("ANALOG_JOYSTICK", adc.ADS1115, 0, adc.ADS1115, 1, pio.GPIO26)

-- Register a callback. Callback is executed when some sensor property changes.
s:callback(function(data)
  if (data.x == -1) then
    print("left")
  elseif (data.x == 1) then
    print("right")
  end

  if (data.y == -1) then
    print("up")
  elseif (data.y == 1) then
    print("down")
  end
  
  if (data.sw == 1) then
    print("sw on")
  elseif (data.sw == 0) then
    print("sw off")
  end
end)

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