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]))
        }
    }
}