keypad4x4

Documentation

Index

• Constants
• type Device
  • func NewDevice(r4, r3, r2, r1, c4, c3, c2, c1 machine.Pin) Device

Constants

const NoKeyPressed = 255

NoKeyPressed is used, when no key was pressed

Types

type Device

type Device interface {
	Configure()
	GetKey() uint8
	GetIndices() (int, int)
}

Device is used as 4x4 keypad driver

func NewDevice

func NewDevice(r4, r3, r2, r1, c4, c3, c2, c1 machine.Pin) Device

takes r4 -r1 pins and c4 - c1 pins