140 lines
3.1 KiB
Go
140 lines
3.1 KiB
Go
package gpio
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import (
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"gobot.io/x/gobot/v2"
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)
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// RgbLedDriver represents a digital RGB Led
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type RgbLedDriver struct {
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*driver
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pinRed string
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redColor byte
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pinGreen string
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greenColor byte
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pinBlue string
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blueColor byte
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high bool
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}
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// NewRgbLedDriver return a new RgbLedDriver given a PwmWriter and 3 pins: redPin, greenPin, and bluePin
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//
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// Supported options:
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//
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// "WithName"
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//
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// Adds the following API Commands:
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//
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// "SetRGB" - See RgbLedDriver.SetRGB
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// "Toggle" - See RgbLedDriver.Toggle
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// "On" - See RgbLedDriver.On
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// "Off" - See RgbLedDriver.Off
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func NewRgbLedDriver(a PwmWriter, redPin string, greenPin string, bluePin string, opts ...interface{}) *RgbLedDriver {
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//nolint:forcetypeassert // no error return value, so there is no better way
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d := &RgbLedDriver{
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driver: newDriver(a.(gobot.Connection), "RGBLED", opts...),
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pinRed: redPin,
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pinGreen: greenPin,
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pinBlue: bluePin,
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}
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//nolint:forcetypeassert // ok here
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d.AddCommand("SetRGB", func(params map[string]interface{}) interface{} {
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r := byte(params["r"].(int))
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g := byte(params["g"].(int))
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b := byte(params["b"].(int))
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return d.SetRGB(r, g, b)
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})
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d.AddCommand("Toggle", func(params map[string]interface{}) interface{} {
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return d.Toggle()
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})
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d.AddCommand("On", func(params map[string]interface{}) interface{} {
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return d.On()
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})
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d.AddCommand("Off", func(params map[string]interface{}) interface{} {
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return d.Off()
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})
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return d
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}
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// Pin returns the RgbLedDrivers pins
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func (d *RgbLedDriver) Pin() string {
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return "r=" + d.pinRed + ", g=" + d.pinGreen + ", b=" + d.pinBlue
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}
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// RedPin returns the RgbLedDrivers redPin
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func (d *RgbLedDriver) RedPin() string { return d.pinRed }
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// GreenPin returns the RgbLedDrivers redPin
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func (d *RgbLedDriver) GreenPin() string { return d.pinGreen }
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// BluePin returns the RgbLedDrivers bluePin
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func (d *RgbLedDriver) BluePin() string { return d.pinBlue }
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// State return true if the led is On and false if the led is Off
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func (d *RgbLedDriver) State() bool {
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return d.high
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}
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// On sets the led's pins to their various states
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func (d *RgbLedDriver) On() error {
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if err := d.SetLevel(d.pinRed, d.redColor); err != nil {
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return err
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}
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if err := d.SetLevel(d.pinGreen, d.greenColor); err != nil {
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return err
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}
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if err := d.SetLevel(d.pinBlue, d.blueColor); err != nil {
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return err
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}
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d.high = true
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return nil
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}
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// Off sets the led to black.
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func (d *RgbLedDriver) Off() error {
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if err := d.SetLevel(d.pinRed, 0); err != nil {
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return err
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}
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if err := d.SetLevel(d.pinGreen, 0); err != nil {
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return err
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}
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if err := d.SetLevel(d.pinBlue, 0); err != nil {
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return err
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}
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d.high = false
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return nil
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}
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// Toggle sets the led to the opposite of it's current state
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func (d *RgbLedDriver) Toggle() error {
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if d.State() {
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return d.Off()
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}
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return d.On()
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}
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// SetLevel sets the led to the specified color level
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func (d *RgbLedDriver) SetLevel(pin string, level byte) error {
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return d.pwmWrite(pin, level)
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}
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// SetRGB sets the Red Green Blue value of the LED.
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func (d *RgbLedDriver) SetRGB(r, g, b byte) error {
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d.redColor = r
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d.greenColor = g
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d.blueColor = b
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return d.On()
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}
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