sdalu

For the LCD/Joystick HAT: https://www.waveshare.com/1.44inch-lcd-hat.htm

PIN Mapping:

Symbol	Raspberry Pi PIN (BCM)	Description
KEY1	P21	Button 1/GPIO
KEY2	P20	Button 2/GPIO
KEY3	P16	Button 3/GPIO
Joystick Up	P6	Joystick Up