goでwindowsでRS232C その２

ターミナルのようなやつ。

サンプルコード

package main
import (
	"fmt"
	"github.com/ohisama/serial"
	"github.com/ohisama/key"
	"time"
)
func main() {
	device := "COM5"
	baud := 9600
	fmt.Println("open", device, "at", baud)
	port, err := serial.Open(device, baud)
	if err != nil {
		fmt.Println("open failed:", err)
		return
	}
	defer port.Close()
	fmt.Println("ready")
	buf := make([]byte, 100)
	c := make([]byte, 1)
	for {
		time.Sleep(200 * time.Millisecond)
		c[0] = key.Scan()
		if c[0] > 0 {
			n, err := port.Write(c)
			if err != nil {
				fmt.Println("serial write error:", err)
			}
			n, err = port.Read(buf)
			if err != nil {
				fmt.Println("serial read error:", err)
				break
			}
			fmt.Printf(string(buf[:n]))
		}
	}
}