74 lines
1.3 KiB
Go
74 lines
1.3 KiB
Go
//
|
|
// Copyright 2014 Cristian Maglie. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
//
|
|
|
|
package serial
|
|
|
|
import "io"
|
|
|
|
// SerialPort object
|
|
type SerialPort interface {
|
|
// Read(p []byte) (n int, err error)
|
|
// Write(p []byte) (n int, err error)
|
|
// Close() error
|
|
io.ReadWriteCloser
|
|
|
|
// Set port speed
|
|
SetSpeed(baudrate int) error
|
|
|
|
// Set port parity
|
|
SetParity(parity Parity) error
|
|
}
|
|
|
|
type Parity int
|
|
|
|
const (
|
|
PARITY_NONE Parity = iota
|
|
PARITY_ODD
|
|
PARITY_EVEN
|
|
PARITY_MARK
|
|
PARITY_SPACE
|
|
)
|
|
|
|
// Platform independent error type for serial ports
|
|
type SerialPortError struct {
|
|
err string
|
|
code int
|
|
}
|
|
|
|
const (
|
|
ERROR_PORT_BUSY = iota
|
|
ERROR_PORT_NOT_FOUND
|
|
ERROR_INVALID_SERIAL_PORT
|
|
ERROR_PERMISSION_DENIED
|
|
ERROR_INVALID_PORT_SPEED
|
|
ERROR_ENUMERATING_PORTS
|
|
ERROR_OTHER
|
|
)
|
|
|
|
func (e SerialPortError) Error() string {
|
|
switch e.code {
|
|
case ERROR_PORT_BUSY:
|
|
return "Serial port busy"
|
|
case ERROR_PORT_NOT_FOUND:
|
|
return "Serial port not found"
|
|
case ERROR_INVALID_SERIAL_PORT:
|
|
return "Invalid serial port"
|
|
case ERROR_PERMISSION_DENIED:
|
|
return "Permission denied"
|
|
case ERROR_INVALID_PORT_SPEED:
|
|
return "Invalid port speed"
|
|
case ERROR_ENUMERATING_PORTS:
|
|
return "Could not enumerate serial ports"
|
|
}
|
|
return e.err
|
|
}
|
|
|
|
func (e SerialPortError) Code() int {
|
|
return e.code
|
|
}
|
|
|
|
// vi:ts=2
|