HT16K33

Documentation

Index

• Constants
• func ScrollMessage(msg string, devices []*EightByEight, speed byte)
• type Device
  • func (bp *Device) Addr() byte
  • func (bp *Device) BusNum() byte
  • func (bp *Device) Clear() (err error)
  • func (bp *Device) Init(addr, busNum byte) (err error)
  • func (bp *Device) ReadDisplay() (err error)
  • func (bp *Device) SetBlinkRate(blinkRate byte) (err error)
  • func (bp *Device) SetBrightness(brightness byte) (err error)
  • func (bp *Device) SetBufferRow(row byte, value uint16) (err error)
  • func (bp *Device) WriteDisplay() (err error)
• type EightByEight
  • func NewEightByEight(addr, bus byte) (e *EightByEight, err error)
  • func ParseDevices(deviceList string) (devices []*EightByEight, err error)
  • func (e *EightByEight) Pixel(x, y byte) bool
  • func (e *EightByEight) SetPixel(x, y byte, on bool) (err error)

Constants

const (
	REGISTER_DISPLAY_SETUP = 0x80
	REGISTER_SYSTEM_SETUP  = 0x20
	REGISTER_DIMMING       = 0xE0
	BLINKRATE_OFF          = 0x00
	BLINKRATE_2HZ          = 0x01
	BLINKRATE_1HZ          = 0x02
	BLINKRATE_HALFHZ       = 0x03
)

const FONT_WIDTH = 6

Fonts are defined as 5x7, but we include an extra pixel in the width so they are spaced one pixel apart

Functions

func ScrollMessage

func ScrollMessage(msg string, devices []*EightByEight, speed byte)

Types

type Device

type Device struct {
	ImmediateUpdate bool
	// contains filtered or unexported fields
}

func (*Device) Addr

func (bp *Device) Addr() byte

func (*Device) BusNum

func (bp *Device) BusNum() byte

func (*Device) Clear

func (bp *Device) Clear() (err error)

func (*Device) Init

func (bp *Device) Init(addr, busNum byte) (err error)

func (*Device) ReadDisplay

func (bp *Device) ReadDisplay() (err error)

func (*Device) SetBlinkRate

func (bp *Device) SetBlinkRate(blinkRate byte) (err error)

func (*Device) SetBrightness

func (bp *Device) SetBrightness(brightness byte) (err error)

func (*Device) SetBufferRow

func (bp *Device) SetBufferRow(row byte, value uint16) (err error)

func (*Device) WriteDisplay

func (bp *Device) WriteDisplay() (err error)

type EightByEight

type EightByEight struct {
	Device
}

func NewEightByEight

func NewEightByEight(addr, bus byte) (e *EightByEight, err error)

func ParseDevices

func ParseDevices(deviceList string) (devices []*EightByEight, err error)

Helper func to generate a list of devices based on an input string matching the spec addr:bus,addr:bus...

func (*EightByEight) Pixel

func (e *EightByEight) Pixel(x, y byte) bool

func (*EightByEight) SetPixel

func (e *EightByEight) SetPixel(x, y byte, on bool) (err error)