software: Implement serial port detection

1 files changed, 87 insertions, 0 deletions

diff --git a/software/vendor/go.bug.st/serial/serial_freebsd.go b/software/vendor/go.bug.st/serial/serial_freebsd.go
new file mode 100644
index 0000000..aceb08a
--- /dev/null
+++ b/software/vendor/go.bug.st/serial/serial_freebsd.go
@@ -0,0 +1,87 @@
+//
+// 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}
+}