goでwindowsでRS232C

　インストール

go get github.com/ohisama/serial

　画像

サンプルコード

package main
import (
    "bufio"
    "fmt"
    "github.com/ohisama/serial"
    "os"
)
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")
    scanner := bufio.NewScanner(os.Stdin)
    buf := make([]byte, 100)
    for scanner.Scan() {
        n, err := port.Write([]byte(scanner.Text() + "\r"))
        if err != nil {
            fmt.Println("serial write error:", err)
        }
        fmt.Println("Sent -> ", n)
        n, err = port.Read(buf)
        if err != nil {
            fmt.Println("serial read error:", err)
            break
        }
        fmt.Println(n, "-> read ", string(buf[:n]))
    }
}