M5StackC plusとGolangでシリアル通信する

type PortDetails struct {
	Name         string
	IsUSB        bool
	VID          string
	PID          string
	SerialNumber string

	// Product is an OS-dependent string that describes the serial port, it may
	// be not always available and it may be different across OS.
	Product string
}

package main

import (
	"bufio"
	"errors"
	"fmt"
	"log"
	"os"

	"go.bug.st/serial"
	"go.bug.st/serial/enumerator"
)

func getPortName() (string, error) {
	ports, error := enumerator.GetDetailedPortsList()
	if error != nil {
		return "", error
	}
	for _, port := range ports {
		/*
			if port.IsUSB {
				fmt.Printf("   USB ID     %s:%s\n", port.VID, port.PID)
				fmt.Printf("   USB serial %s\n", port.SerialNumber)
		*/

		if port.IsUSB && port.VID == "0403" && port.PID == "6001" {
			return port.Name, nil
		}
	}
	return "", errors.New("M5Stack cplus is not conntected")
}

func main() {
	portName, err := getPortName()
	if err != nil {
		log.Fatal(err)
		os.Exit(1)
	}
	mode := &serial.Mode{
		BaudRate: 115200,
	}
	port, err := serial.Open(portName, mode)
	if err != nil {
		log.Fatal(err)
		os.Exit(1)
	}
	scanner := bufio.NewScanner(port)
	for scanner.Scan() {
		fmt.Println(scanner.Text())
	}
}