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Add SetDTR() SetRTS() GetStatus() for linux. #91

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Add SetDTR() SetRTS() GetStatus() for linux. #91

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56 changes: 52 additions & 4 deletions serial_linux.go
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Original file line number Diff line number Diff line change
Expand Up @@ -109,14 +109,11 @@ func openPort(name string, baud int, databits byte, parity Parity, stopbits Stop
t.Cc[unix.VMIN] = vmin
t.Cc[unix.VTIME] = vtime

if _, _, errno := unix.Syscall6(
if _, _, errno := unix.Syscall(
unix.SYS_IOCTL,
uintptr(fd),
uintptr(unix.TCSETS),
uintptr(unsafe.Pointer(&t)),
0,
0,
0,
); errno != 0 {
return nil, errno
}
Expand Down Expand Up @@ -159,6 +156,57 @@ func (p *Port) Flush() error {
return errno
}

func (p *Port) GetStatus() (n uint, err error) {
var status uint
if _, _, errno := unix.Syscall(
unix.SYS_IOCTL,
uintptr(p.f.Fd()),
uintptr(unix.TIOCMGET),
uintptr(unsafe.Pointer(&status)),
); errno != 0 {
return status, errno
} else {
return status, nil
}
}

func (p *Port) SetDTR(v byte) (err error) {
req := unix.TIOCMBIS
if 0 == v {
req = unix.TIOCMBIC
}
var m uint = unix.TIOCM_DTR
if _, _, errno := unix.Syscall(
unix.SYS_IOCTL,
uintptr(p.f.Fd()),
uintptr(req),
uintptr(unsafe.Pointer(&m)),
); errno != 0 {
return errno
} else {
return nil
}
}


func (p *Port) SetRTS(v byte) (err error) {
req := unix.TIOCMBIS
if 0 == v {
req = unix.TIOCMBIC
}
var m uint = unix.TIOCM_RTS
if _, _, errno := unix.Syscall(
unix.SYS_IOCTL,
uintptr(p.f.Fd()),
uintptr(req),
uintptr(unsafe.Pointer(&m)),
); errno != 0 {
return errno
} else {
return nil
}
}

func (p *Port) Close() (err error) {
return p.f.Close()
}