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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| package talkkonnect | ||
|
|
||
| import ( | ||
| "strconv" | ||
| "log" | ||
| "periph.io/x/periph/conn/physic" | ||
| "periph.io/x/periph/conn/spi" | ||
| "periph.io/x/periph/conn/spi/spireg" | ||
| "periph.io/x/periph/devices/apa102" | ||
| "periph.io/x/periph/host" | ||
| ) | ||
|
|
||
| const ( | ||
| numLEDs int = 3 | ||
| OnlineLED int = 0 | ||
| ParticipantsLED int = 1 | ||
| TransmitLED int = 2 | ||
| OnlineCol string = "FF0000" | ||
| ParticipantsCol string = "00FF00" | ||
| TransmitCol string = "0000FF" | ||
| OffCol string = "000000" | ||
| ) | ||
|
|
||
| type LedStrip struct { | ||
| buf []byte | ||
| display *apa102.Dev | ||
| spiInterface spi.PortCloser | ||
| } | ||
|
|
||
| func NewLedStrip() (*LedStrip, error) { | ||
| var spiID string = "SPI0.0" //SPI port to use | ||
| var intensity uint8 = 16 //light intensity [1-255] | ||
| var temperature uint16 = 5000 //light temperature in °Kelvin [3500-7500] | ||
| var hz physic.Frequency //SPI port speed | ||
| var globalPWM bool = false | ||
|
|
||
| if _, err := host.Init(); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| // Open the display device. | ||
| s, err := spireg.Open(spiID) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| //Set port speed | ||
| if hz != 0 { | ||
| if err := s.LimitSpeed(hz); err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
| if p, ok := s.(spi.Pins); ok { | ||
| log.Printf("debug: Using pins CLK: %s MOSI: %s MISO: %s", p.CLK(), p.MOSI(), p.MISO()) | ||
| } | ||
| o := apa102.DefaultOpts | ||
| o.NumPixels = numLEDs | ||
| o.Intensity = intensity | ||
| o.Temperature = temperature | ||
| o.DisableGlobalPWM = globalPWM | ||
| display, err := apa102.New(s, &o) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| log.Printf("debug: init display: %s\n", display) | ||
|
|
||
| buf := make([]byte, numLEDs*3) | ||
|
|
||
| return &LedStrip{ | ||
| buf: buf, | ||
| display: display, | ||
| spiInterface: s, | ||
| }, nil | ||
| } | ||
|
|
||
| func (ls *LedStrip) ledCtrl(num int, color string) error { | ||
| rgb, err := strconv.ParseUint(color, 16, 32) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| r := byte(rgb >> 16) | ||
| g := byte(rgb >> 8) | ||
| b := byte(rgb) | ||
| ls.buf[num*numLEDs+0] = r | ||
| ls.buf[num*numLEDs+1] = g | ||
| ls.buf[num*numLEDs+2] = b | ||
|
|
||
| _, err = ls.display.Write(ls.buf) | ||
|
|
||
| log.Printf("debug: LedStrip %v\n", ls.buf) | ||
|
|
||
| return err | ||
| } | ||
|
|
||
| func (ls *LedStrip) closePort() { | ||
| ls.spiInterface.Close() | ||
| } |
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