rgbmatrix

Documentation

Overview

Package rgbmatrix talks to the IS31FL3731 i2c LED driver used by the Pimoroni 5x5 RGB Matrix. Code basically ported from Pimoroni's original: https://github.com/pimoroni/rgbmatrix5x5-python

Index

• Variables
• func Close()
• func Open(pi *raspi.Adaptor) (err error)
• func Render() (err error)
• func Set(image [25]Rgb)
• type Rgb
  • func Binary(n uint16) [25]Rgb
  • func Fill(r Rgb, variance int) [25]Rgb

Variables

var Clear = [25]Rgb{
	{0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00},
	{0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00},
	{0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00},
	{0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00},
	{0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00},
}

var Ghost = [25]Rgb{
	{0x00, 0x00, 0x00}, {0xff, 0x66, 0x00}, {0xff, 0x66, 0x00}, {0xff, 0x66, 0x00}, {0x00, 0x00, 0x00},
	{0xdf, 0x20, 0x00}, {0xdf, 0x20, 0x00}, {0xdf, 0x20, 0x00}, {0xdf, 0x20, 0x00}, {0xdf, 0x20, 0x00},
	{0xaf, 0x10, 0x00}, {0x00, 0x00, 0x00}, {0xaf, 0x10, 0x00}, {0x00, 0x00, 0x00}, {0xaf, 0x10, 0x00},
	{0x90, 0x00, 0x00}, {0x90, 0x00, 0x00}, {0x90, 0x00, 0x00}, {0x90, 0x00, 0x00}, {0x90, 0x00, 0x00},
	{0x80, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x80, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x80, 0x00, 0x00},
}

var HorizontalBars = [25]Rgb{
	{0xff, 0x00, 0x00}, {0xff, 0x00, 0x00}, {0xff, 0x00, 0x00}, {0xff, 0x00, 0x00}, {0xff, 0x00, 0x00},
	{0x00, 0xff, 0x00}, {0x00, 0xff, 0x00}, {0x00, 0xff, 0x00}, {0x00, 0xff, 0x00}, {0x00, 0xff, 0x00},
	{0xff, 0xff, 0x00}, {0xff, 0xff, 0x00}, {0xff, 0xff, 0x00}, {0xff, 0xff, 0x00}, {0xff, 0xff, 0x00},
	{0x00, 0xff, 0xff}, {0x00, 0xff, 0xff}, {0x00, 0xff, 0xff}, {0x00, 0xff, 0xff}, {0x00, 0xff, 0xff},
	{0x00, 0x00, 0xff}, {0x00, 0x00, 0xff}, {0x00, 0x00, 0xff}, {0x00, 0x00, 0xff}, {0x00, 0x00, 0xff},
}

var VerticalBars = [25]Rgb{
	{0xff, 0x00, 0x00}, {0x00, 0xff, 0x00}, {0xff, 0xff, 0x00}, {0x00, 0xff, 0xff}, {0x00, 0x00, 0xff},
	{0xff, 0x00, 0x00}, {0x00, 0xff, 0x00}, {0xff, 0xff, 0x00}, {0x00, 0xff, 0xff}, {0x00, 0x00, 0xff},
	{0xff, 0x00, 0x00}, {0x00, 0xff, 0x00}, {0xff, 0xff, 0x00}, {0x00, 0xff, 0xff}, {0x00, 0x00, 0xff},
	{0xff, 0x00, 0x00}, {0x00, 0xff, 0x00}, {0xff, 0xff, 0x00}, {0x00, 0xff, 0xff}, {0x00, 0x00, 0xff},
	{0xff, 0x00, 0x00}, {0x00, 0xff, 0x00}, {0xff, 0xff, 0x00}, {0x00, 0xff, 0xff}, {0x00, 0x00, 0xff},
}

Functions

func Close

func Close()

func Open

func Open(pi *raspi.Adaptor) (err error)

Setup connects to the RgbMatrix device and resets

func Render

func Render() (err error)

func Set

func Set(image [25]Rgb)

Types

type Rgb

type Rgb struct {
	R, G, B uint8
}

func Binary

func Binary(n uint16) [25]Rgb

Binary creates a binary image of a uint16 TODO: Shift from green to red to purple as we get closer to 500

func Fill

func Fill(r Rgb, variance int) [25]Rgb

Fill creates an image fill based on the color r with random variation