Serport is a Go package providing access to serial ports on Linux and Windows. Its sub-package serenum helps finding serial ports on a system.

In the following example a serial port is selected by serport.Choose; if there is more than one serial port present on a system, Choose will display a list of ports it has found and ask the user to select one. If there is only one serial port present on a system, Choose will try to use this port directly. On success, the selected port is opened using 115200 baud, and obeying CTS.

package main

import (
	"fmt"
	"log"

	"github.com/knieriem/serport"
)

func main() {
	deviceName, err := serport.Choose("")
	if err != nil {
		log.Fatal(err)
	}
	conf := serport.MergeCtlCmds(serport.StdConf, "r1 m1")
	port, err := serport.Open(deviceName, conf)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println("# connected to", deviceName)

	// do something with `port'
	buf := make([]byte, 4096)
	n, err := port.Read(buf)
	fmt.Println(n, err)
}

For a more complex example, see cmd/sercom.

For the syntax of control strings (for configuring baudrate, line control, ...) see uart(3).