Go入門筆記-5 實現串口收發數據

1、代碼

//project main.go
package main

import (
	"fmt"
	"strings"

	serial "github.com/tarm/goserial"
)

const MAXRWLEN = 8000

func main() {

	cfg := &serial.Config{Name: "COM1", Baud: 9600, ReadTimeout: 3 /*毫秒*/}

	iorwc, err := serial.OpenPort(cfg)
	if err != nil {
		fmt.Println(err)
		return
	}

	defer iorwc.Close()
	buffer := make([]byte, MAXRWLEN)

	//發命令之前清空緩沖區
	num, err := iorwc.Read(buffer)
	if err != nil {
		fmt.Println(err)
		return
	}

	//發命令數據類型為[]byte
	num, err = iorwc.Write([]byte("AT\r\n"))
	if err != nil {
		fmt.Println(err)
		return
	}

	var tmpstr string = ""
	for i := 0; i < 3000; i++ {

		num, err = iorwc.Read(buffer)
		if num > 0 {
			tmpstr += fmt.Sprintf("%s", string(buffer[:num]))
		}

		//查找讀到信息的結尾標志
		if strings.LastIndex(tmpstr, "\r\nOK\r\n") > 0 {
			break
		}
	}

	//打印輸出讀到的信息
	fmt.Println(tmpstr)

	return
}

2、在vscode控制台下執行如下代碼

go mod init github.com/tarm
go get github.com/tarm/goserial

3、編譯運行