107 lines
2.3 KiB
Go
107 lines
2.3 KiB
Go
package PinControlService
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import (
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"errors"
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log "github.com/sirupsen/logrus"
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)
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type Pin struct {
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Id int
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Name string
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Direction PinDirection
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PullConfig PinPull
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InitialState *PinCommand
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PinHandle HardwarePinInterface
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SendPollingEvents bool
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SendChangeEvents bool
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}
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func NewPin(config PinConfig) Pin {
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p := Pin{
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Direction: config.Direction,
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PullConfig: config.PullConfig,
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Name: config.Name,
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Id: config.PinNumber,
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PinHandle: NewHardwarePin(config.PinNumber),
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}
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if config.SendPollingEvents != nil {
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p.SendPollingEvents = *config.SendPollingEvents
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} else {
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p.SendPollingEvents = true
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}
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if config.SendChangeEvents != nil {
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p.SendChangeEvents = *config.SendChangeEvents
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} else {
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p.SendChangeEvents = true
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}
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p.InitialState = config.InitialState
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return p
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}
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func (p *Pin) State() PinState {
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if state := p.PinHandle.Read(); State(state) == HighState {
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return StateOn
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} else {
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return StateOff
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}
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}
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func (p *Pin) Command(cmd PinCommand) error {
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log.Infof("send command \"%s\" for pin %s (pin no: %d)", cmd, p.Name, p.Id)
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if p.Direction != Output {
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return errors.New("pin is not an output")
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}
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if cmd == On {
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p.PinHandle.High()
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} else if cmd == Off {
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p.PinHandle.Low()
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} else if cmd == Toggle {
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p.PinHandle.Toggle()
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} else {
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return errors.New("unknown command")
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}
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return nil
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}
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func (p *Pin) Configure() {
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if p.Direction == Input {
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log.Infof("configuring pin %s (pin no: %d) as Input", p.Name, p.Id)
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p.PinHandle.Input()
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} else if p.Direction == Output {
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log.Infof("configuring pin %s (pin no: %d) as Output", p.Name, p.Id)
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p.PinHandle.Output()
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if p.InitialState != nil {
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log.Infof("set initial state \"%s\" for pin %s (pin no: %d)", *p.InitialState, p.Name, p.Id)
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_ = p.Command(*p.InitialState)
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}
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}
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p.PinHandle.Detect(AnyEdge)
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if p.PullConfig == PullUp {
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p.PinHandle.PullUp()
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} else if p.PullConfig == PullDown {
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p.PinHandle.PullDown()
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} else if p.PullConfig == PullOff {
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p.PinHandle.PullOff()
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} else {
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log.Errorf("unknown config value \"%s\" for pull-config", p.PullConfig)
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}
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}
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func (p *Pin) Changed() bool {
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ret := p.PinHandle.EdgeDetected()
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if ret {
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log.Infof("pin %s (pin no: %d) changed state", p.Name, p.Id)
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}
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return ret
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}
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