93 lines
2.0 KiB
Go
93 lines
2.0 KiB
Go
package serialport
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import (
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"io"
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"go.bug.st/serial"
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"gobot.io/x/gobot/v2"
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)
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// Adaptor represents a Gobot Adaptor for the Serial Communication
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type Adaptor struct {
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name string
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port string
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sp io.ReadWriteCloser
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connected bool
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connect func(string) (io.ReadWriteCloser, error)
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}
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// NewAdaptor returns a new adaptor given a port for the serial communication
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func NewAdaptor(port string) *Adaptor {
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return &Adaptor{
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name: gobot.DefaultName("Serial"),
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port: port,
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connect: func(port string) (io.ReadWriteCloser, error) {
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return serial.Open(port, &serial.Mode{BaudRate: 115200})
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},
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}
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}
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// Name returns the Adaptor's name
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func (a *Adaptor) Name() string { return a.name }
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// SetName sets the Adaptor's name
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func (a *Adaptor) SetName(n string) { a.name = n }
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// Connect initiates a connection to the serial port.
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func (a *Adaptor) Connect() error {
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sp, err := a.connect(a.Port())
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if err != nil {
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return err
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}
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a.sp = sp
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a.connected = true
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return nil
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}
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// Finalize finalizes the adaptor by disconnect
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func (a *Adaptor) Finalize() error {
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return a.Disconnect()
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}
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// Disconnect terminates the connection to the port.
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func (a *Adaptor) Disconnect() error {
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if a.connected {
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if err := a.sp.Close(); err != nil {
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return err
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}
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a.connected = false
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}
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return nil
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}
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// Reconnect attempts to reconnect to the port. If the port is connected it will first close
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// that connection and then establish a new connection.
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func (a *Adaptor) Reconnect() error {
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if a.connected {
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if err := a.Disconnect(); err != nil {
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return err
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}
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}
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return a.Connect()
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}
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// Port returns the Adaptor's port
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func (a *Adaptor) Port() string { return a.port }
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// IsConnected returns the connection state
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func (a *Adaptor) IsConnected() bool {
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return a.connected
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}
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// SerialRead reads from the port
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func (a *Adaptor) SerialRead(p []byte) (int, error) {
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return a.sp.Read(p)
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}
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// SerialWrite writes to the port
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func (a *Adaptor) SerialWrite(p []byte) (int, error) {
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return a.sp.Write(p)
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}
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