88 lines
1.9 KiB
Go
88 lines
1.9 KiB
Go
//
|
|
// Copyright 2014-2023 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 "golang.org/x/sys/unix"
|
|
|
|
const devFolder = "/dev"
|
|
const regexFilter = "^(cu|tty)\\..*"
|
|
|
|
// termios manipulation functions
|
|
|
|
var baudrateMap = map[int]uint32{
|
|
0: unix.B9600, // Default to 9600
|
|
50: unix.B50,
|
|
75: unix.B75,
|
|
110: unix.B110,
|
|
134: unix.B134,
|
|
150: unix.B150,
|
|
200: unix.B200,
|
|
300: unix.B300,
|
|
600: unix.B600,
|
|
1200: unix.B1200,
|
|
1800: unix.B1800,
|
|
2400: unix.B2400,
|
|
4800: unix.B4800,
|
|
9600: unix.B9600,
|
|
19200: unix.B19200,
|
|
38400: unix.B38400,
|
|
57600: unix.B57600,
|
|
115200: unix.B115200,
|
|
230400: unix.B230400,
|
|
460800: unix.B460800,
|
|
921600: unix.B921600,
|
|
}
|
|
|
|
var databitsMap = map[int]uint32{
|
|
0: unix.CS8, // Default to 8 bits
|
|
5: unix.CS5,
|
|
6: unix.CS6,
|
|
7: unix.CS7,
|
|
8: unix.CS8,
|
|
}
|
|
|
|
const tcCMSPAR uint32 = 0 // may be CMSPAR or PAREXT
|
|
const tcIUCLC uint32 = 0
|
|
|
|
const tcCCTS_OFLOW uint32 = 0x00010000
|
|
const tcCRTS_IFLOW uint32 = 0x00020000
|
|
|
|
const tcCRTSCTS uint32 = tcCCTS_OFLOW
|
|
|
|
const ioctlTcgetattr = unix.TIOCGETA
|
|
const ioctlTcsetattr = unix.TIOCSETA
|
|
const ioctlTcflsh = unix.TIOCFLUSH
|
|
const ioctlTioccbrk = unix.TIOCCBRK
|
|
const ioctlTiocsbrk = unix.TIOCSBRK
|
|
|
|
func toTermiosSpeedType(speed uint32) uint32 {
|
|
return speed
|
|
}
|
|
|
|
func setTermSettingsBaudrate(speed int, settings *unix.Termios) (error, bool) {
|
|
baudrate, ok := baudrateMap[speed]
|
|
if !ok {
|
|
return nil, true
|
|
}
|
|
// XXX: Is Cflag really needed
|
|
// revert old baudrate
|
|
for _, rate := range baudrateMap {
|
|
settings.Cflag &^= rate
|
|
}
|
|
// set new baudrate
|
|
settings.Cflag |= baudrate
|
|
|
|
settings.Ispeed = toTermiosSpeedType(baudrate)
|
|
settings.Ospeed = toTermiosSpeedType(baudrate)
|
|
return nil, false
|
|
}
|
|
|
|
func (port *unixPort) setSpecialBaudrate(speed uint32) error {
|
|
// TODO: unimplemented
|
|
return &PortError{code: InvalidSpeed}
|
|
}
|