touchSerialPortAt1200bps

touchSerialPortAt1200bps.go

package main

import (
	"fmt"
	"log"
	"time"

	"go.bug.st/serial"
)

func main() {
	err := touchSerialPortAt1200bps(`COM7`)
	if err != nil {
		log.Fatal(err)
	}
}

func touchSerialPortAt1200bps(port string) (err error) {
	retryCount := 3
	for i := 0; i < retryCount; i++ {
		// Open port
		p, e := serial.Open(port, &serial.Mode{BaudRate: 1200})
		if e != nil {
			time.Sleep(1 * time.Second)
			err = e
			continue
		}
		defer p.Close()

		p.SetDTR(false)
		return nil
	}
	return fmt.Errorf("opening port: %s", err)
}