commit 2021-12-09]12:53:08

serial/serial.go

@@ -1,164 +0,0 @@
-package puserial
-
-import (
-	"bufio"
-	"encoding/json"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"log"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strconv"
-	"strings"
-	"time"
-
-	"github.com/jacobsa/go-serial/serial"
-	"github.com/rjeczalik/notify"
-)
-
-func DiscoverUSB() string {
-	fmt.Println("Waiting USB")
-	ch := make(chan notify.EventInfo, 1)
-	if err := notify.Watch("/dev", ch, notify.Create, notify.Remove); err != nil {
-		log.Fatalln(err)
-	}
-	defer notify.Stop(ch)
-
-	for e := range ch {
-		if strings.Contains(e.Path(), "/dev/ttyACM") {
-			if e.Event() == notify.Create {
-				log.Println("Got event:", e.Path())
-				return e.Path()
-			}
-		}
-	}
-
-	return ""
-}
-
-func InitUSB() (string, error) {
-	fs, err := ioutil.ReadDir("/dev")
-	if err != nil {
-		return "", err
-	}
-
-	for _, f := range fs {
-		if strings.Contains(f.Name(), "ttyACM") {
-			return filepath.Join("/dev", f.Name()), nil
-		}
-	}
-
-	return "", errors.New("USB Not found")
-}
-
-func Run() {
-	dev, err := InitUSB()
-	if err != nil {
-		if err.Error() == "USB Not found" {
-			dev = DiscoverUSB()
-		} else {
-			log.Fatalln(err.Error())
-		}
-	}
-
-	fmt.Println("discover: ", dev)
-	time.Sleep(time.Second)
-
-	log.Println("changing the mod of file")
-	cmd := exec.Command("chmod", "a+rw", dev)
-	b, _ := cmd.CombinedOutput()
-	fmt.Println(string(b))
-
-	// Set up options.
-	options := serial.OpenOptions{
-		PortName:        dev,
-		BaudRate:        9600,
-		DataBits:        8,
-		StopBits:        1,
-		MinimumReadSize: 16,
-	}
-
-	// Open the port.
-	port, err := serial.Open(options)
-	if err != nil {
-		log.Fatalf("serial.Open: %v", err)
-	}
-
-	// Make sure to close it later.
-	defer port.Close()
-
-	// Write 4 bytes to the port.
-	// b := []byte{0x00, 0x01, 0x02, 0x03}
-	// n, err := port.Write(b)
-	// if err != nil {
-	// 	log.Fatalf("port.Write: %v", err)
-	// }
-
-	// fmt.Println("Wrote", n, "bytes.")
-	// var tokenByte string
-
-	reader := bufio.NewReader(port)
-	// decoder := json.NewDecoder(port)
-	encoder := json.NewEncoder(port)
-	command := map[string]interface{}{}
-	command["code"] = 1
-	command["light"] = 0
-
-	var data string
-	go func() {
-		for {
-			b, _, _ := reader.ReadLine()
-			recvObj := map[string]interface{}{}
-			err := json.Unmarshal(b, &recvObj)
-			// err = readJsonFromSerial(recvObj, decoder)
-			if err != nil {
-				if err.Error() == "EOF" {
-					return
-				}
-
-				fmt.Println("error: ", string(b))
-			}
-
-			data = string(b)
-			// fmt.Println("line : ", recvObj)
-		}
-	}()
-
-	cmdReader := bufio.NewReader(os.Stdin)
-	for {
-		fmt.Print("> ")
-		cmd, _, _ := cmdReader.ReadLine()
-		cmdTkns := strings.Split(string(cmd), " ")
-
-		if cmdTkns[0] == "light" {
-			command["code"] = 1
-			if cmdTkns[1] == "on" {
-				command["light"] = 100
-			} else {
-				command["light"] = 0
-			}
-		} else if cmdTkns[0] == "fan" {
-			command["code"] = 2
-			if cmdTkns[1] == "on" {
-				command["status"] = 1
-			} else {
-				command["status"] = 0
-			}
-		} else if cmdTkns[0] == "servo" {
-			command["code"] = 3
-			angle, err := strconv.Atoi(cmdTkns[1])
-			if err != nil {
-				continue
-			}
-			command["angle"] = angle
-		} else if cmdTkns[0] == "print" {
-			fmt.Println(data)
-		}
-		err := encoder.Encode(command)
-		if err != nil {
-			panic(err)
-		}
-	}
-}