Works on FreeBSD (even on armv6 and armv7 when cross compiled).

serial_freebsd.go

@@ -0,0 +1,58 @@
+//
+// Copyright 2014-2016 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 "go.bug.st/serial"
+
+import "syscall"
+
+const devFolder = "/dev"
+const regexFilter = "^(cu|tty)\\..*"
+
+// termios manipulation functions
+
+var baudrateMap = map[int]int{
+	0:      syscall.B9600, // Default to 9600
+	50:     syscall.B50,
+	75:     syscall.B75,
+	110:    syscall.B110,
+	134:    syscall.B134,
+	150:    syscall.B150,
+	200:    syscall.B200,
+	300:    syscall.B300,
+	600:    syscall.B600,
+	1200:   syscall.B1200,
+	1800:   syscall.B1800,
+	2400:   syscall.B2400,
+	4800:   syscall.B4800,
+	9600:   syscall.B9600,
+	19200:  syscall.B19200,
+	38400:  syscall.B38400,
+	57600:  syscall.B57600,
+	115200: syscall.B115200,
+	230400: syscall.B230400,
+}
+
+var databitsMap = map[int]int{
+	0: syscall.CS8, // Default to 8 bits
+	5: syscall.CS5,
+	6: syscall.CS6,
+	7: syscall.CS7,
+	8: syscall.CS8,
+}
+
+const tc_CMSPAR int = 0 // may be CMSPAR or PAREXT
+const tc_IUCLC int = 0
+
+// syscall wrappers
+
+//sys ioctl(fd int, req uint64, data uintptr) (err error)
+
+const ioctl_tcgetattr = syscall.TIOCGETA
+const ioctl_tcsetattr = syscall.TIOCSETA
+
+func termiosMask(data int) uint32 {
+	return uint32(data)
+}

serial_unix.go

@@ -4,7 +4,7 @@
 // license that can be found in the LICENSE file.
 //
 
-// +build linux darwin
+// +build linux darwin freebsd
 
 package serial // import "go.bug.st/serial"
 

syscall_freebsd.go

@@ -0,0 +1,21 @@
+//
+// Copyright 2014-2016 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.
+//
+
+// This file is machine generated by the command:
+//   mksyscall.pl serial_darwin.go
+// The generated stub is modified to make it compile under the "serial" package
+
+package serial // import "go.bug.st/serial"
+
+import "syscall"
+
+func ioctl(fd int, req uint64, data uintptr) (err error) {
+	_, _, e1 := syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(data))
+	if e1 != 0 {
+		err = e1
+	}
+	return
+}