forked from albenik/go-serial
/
termios_unix.go
130 lines (118 loc) · 3.12 KB
/
termios_unix.go
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//
// Copyright 2014-2017 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.
//
//go:build linux || darwin || freebsd || openbsd
// +build linux darwin freebsd openbsd
package serial
import (
"golang.org/x/sys/unix"
)
func (s *settings) setParity(parity Parity) error {
switch parity {
case NoParity:
s.termios.Cflag &^= unix.PARENB
s.termios.Cflag &^= unix.PARODD
s.termios.Cflag &^= tcCMSPAR
s.termios.Iflag &^= unix.INPCK
case OddParity:
s.termios.Cflag |= unix.PARENB
s.termios.Cflag |= unix.PARODD
s.termios.Cflag &^= tcCMSPAR
s.termios.Iflag |= unix.INPCK
case EvenParity:
s.termios.Cflag |= unix.PARENB
s.termios.Cflag &^= unix.PARODD
s.termios.Cflag &^= tcCMSPAR
s.termios.Iflag |= unix.INPCK
case MarkParity:
if tcCMSPAR == 0 {
return &PortError{code: InvalidParity}
}
s.termios.Cflag |= unix.PARENB
s.termios.Cflag |= unix.PARODD
s.termios.Cflag |= tcCMSPAR
s.termios.Iflag |= unix.INPCK
case SpaceParity:
if tcCMSPAR == 0 {
return &PortError{code: InvalidParity}
}
s.termios.Cflag |= unix.PARENB
s.termios.Cflag &^= unix.PARODD
s.termios.Cflag |= tcCMSPAR
s.termios.Iflag |= unix.INPCK
default:
return &PortError{code: InvalidParity}
}
return nil
}
func (s *settings) setDataBits(bits int) error {
databits, ok := databitsMap[bits]
if !ok {
return &PortError{code: InvalidDataBits}
}
// Remove previous databits setting
s.termios.Cflag &^= unix.CSIZE
// Set requested databits
s.termios.Cflag |= databits
return nil
}
func (s *settings) setStopBits(bits StopBits) error {
switch bits {
case OneStopBit:
s.termios.Cflag &^= unix.CSTOPB
case OnePointFiveStopBits:
return &PortError{code: InvalidStopBits}
case TwoStopBits:
s.termios.Cflag |= unix.CSTOPB
default:
return &PortError{code: InvalidStopBits}
}
return nil
}
func (s *settings) setCtsRts(enable bool) {
if enable {
s.termios.Cflag |= tcCRTSCTS
} else {
s.termios.Cflag &^= tcCRTSCTS
}
}
func (s *settings) setRawMode(hupcl bool) {
// Set local mode
s.termios.Cflag |= unix.CREAD
s.termios.Cflag |= unix.CLOCAL
if hupcl {
s.termios.Cflag |= unix.HUPCL
} else {
s.termios.Cflag &^= unix.HUPCL
}
// Set raw mode
s.termios.Lflag &^= unix.ICANON
s.termios.Lflag &^= unix.ECHO
s.termios.Lflag &^= unix.ECHOE
s.termios.Lflag &^= unix.ECHOK
s.termios.Lflag &^= unix.ECHONL
s.termios.Lflag &^= unix.ECHOCTL
s.termios.Lflag &^= unix.ECHOPRT
s.termios.Lflag &^= unix.ECHOKE
s.termios.Lflag &^= unix.ISIG
s.termios.Lflag &^= unix.IEXTEN
s.termios.Iflag &^= unix.IXON
s.termios.Iflag &^= unix.IXOFF
s.termios.Iflag &^= unix.IXANY
s.termios.Iflag &^= unix.INPCK
s.termios.Iflag &^= unix.IGNPAR
s.termios.Iflag &^= unix.PARMRK
s.termios.Iflag &^= unix.ISTRIP
s.termios.Iflag &^= unix.IGNBRK
s.termios.Iflag &^= unix.BRKINT
s.termios.Iflag &^= unix.INLCR
s.termios.Iflag &^= unix.IGNCR
s.termios.Iflag &^= unix.ICRNL
s.termios.Iflag &^= tcIUCLC
s.termios.Oflag &^= unix.OPOST
// Block reads until at least one char is available (no timeout)
s.termios.Cc[unix.VMIN] = 1
s.termios.Cc[unix.VTIME] = 0
}