commit 2021-12-10]10:14:32

change_permission.go

@@ -0,0 +1,20 @@
+package manager
+
+import (
+	"fmt"
+	"log"
+	"os/exec"
+)
+
+func ChangePermission(iface string) error {
+	log.Println("changing the mod of file")
+
+	cmd := exec.Command("chmod", "a+rw", iface)
+	b, err := cmd.CombinedOutput()
+	if err != nil {
+		return err
+	}
+
+	fmt.Println(string(b))
+	return nil
+}

cli.go

@@ -0,0 +1,103 @@
+package manager
+
+import (
+	"bufio"
+	"context"
+	"encoding/json"
+	"fmt"
+	"log"
+	"time"
+
+	"git.godopu.net/lab/etri-smartfarm-poc-controller-serial/puserial"
+	"github.com/jacobsa/go-serial/serial"
+	"github.com/rjeczalik/notify"
+)
+
+var ctx context.Context
+var cancel context.CancelFunc
+var ch_discover chan notify.EventInfo
+var _managerObj *_manager
+
+func init() {
+	ctx, cancel = context.WithCancel(context.Background())
+	ch_discover = make(chan notify.EventInfo)
+	_managerObj = &_manager{
+		devices:      map[string]*_device{},
+		SyncListener: nil,
+		RecvListener: nil,
+	}
+}
+
+func Close() {
+	cancel()
+}
+
+func register(iface string) {
+	fmt.Println("Handle] ", iface)
+
+	// change permission
+	err := ChangePermission(iface)
+	if err != nil {
+		panic(err)
+	}
+
+	// Set up options.
+	options := serial.OpenOptions{
+		PortName:        iface,
+		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()
+	reader := bufio.NewReader(port)
+	dev := &_device{}
+
+	for {
+		b, _, _ := reader.ReadLine()
+
+		err := json.Unmarshal(b, &dev)
+
+		if err != nil {
+			continue
+		}
+
+		fmt.Println(dev)
+		port.Write([]byte{200})
+		time.Sleep(time.Second)
+		break
+	}
+
+	// var data string
+}
+
+func Run() error {
+	iface, err := puserial.InitDevice()
+	if err != nil {
+		if err.Error() != "USB Not found" {
+			return err
+		}
+	} else {
+		// _managerObj.onAdd(iface)
+		register(iface)
+	}
+
+	go puserial.WatchNewDevice(ctx, ch_discover)
+
+	for {
+		e, ok := <-ch_discover
+		if !ok {
+			log.Println("manager exit")
+			return nil
+		}
+		register(e.Path())
+	}
+}

communication.go

@@ -0,0 +1,69 @@
+package manager
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"io"
+	"log"
+)
+
+func recv(reader bufio.Reader, input chan<- Event) {
+	for {
+		b, _, err := reader.ReadLine()
+		if err != nil {
+			if err == io.EOF {
+				log.Println("USB is disconnected")
+				return
+			}
+		}
+		recvObj := map[string]interface{}{}
+		err = json.Unmarshal(b, &recvObj)
+		// err = readJsonFromSerial(recvObj, decoder)
+
+		if err == nil {
+			fmt.Println("line : ", string(b))
+
+		}
+		// data = string(b)
+	}
+}
+
+func send(sender io.Writer, output <-chan Event) {
+
+}
+
+// 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)
+// 	}
+// }

examples/main.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+	"fmt"
+	"time"
+
+	manager "git.godopu.net/lab/etri-smartfarm-poc-controller-serial"
+)
+
+func main() {
+	go manager.Run()
+
+	fmt.Print("> ")
+	var cmd string
+	fmt.Scanln(&cmd)
+
+	if cmd == "exit" {
+		manager.Close()
+	}
+
+	time.Sleep(time.Second)
+}

go.mod

@@ -2,6 +2,9 @@ module git.godopu.net/lab/etri-smartfarm-poc-controller-serial
 
 go 1.17
 
-require github.com/rjeczalik/notify v0.9.2
+require (
+	github.com/jacobsa/go-serial v0.0.0-20180131005756-15cf729a72d4
+	github.com/rjeczalik/notify v0.9.2
+)
 
 require golang.org/x/sys v0.0.0-20180926160741-c2ed4eda69e7 // indirect

go.sum

@@ -1,3 +1,5 @@
+github.com/jacobsa/go-serial v0.0.0-20180131005756-15cf729a72d4 h1:G2ztCwXov8mRvP0ZfjE6nAlaCX2XbykaeHdbT6KwDz0=
+github.com/jacobsa/go-serial v0.0.0-20180131005756-15cf729a72d4/go.mod h1:2RvX5ZjVtsznNZPEt4xwJXNJrM3VTZoQf7V6gk0ysvs=
 github.com/rjeczalik/notify v0.9.2 h1:MiTWrPj55mNDHEiIX5YUSKefw/+lCQVoAFmD6oQm5w8=
 github.com/rjeczalik/notify v0.9.2/go.mod h1:aErll2f0sUX9PXZnVNyeiObbmTlk5jnMoCa4QEjJeqM=
 golang.org/x/sys v0.0.0-20180926160741-c2ed4eda69e7 h1:bit1t3mgdR35yN0cX0G8orgLtOuyL9Wqxa1mccLB0ig=

interface.go

@@ -0,0 +1,8 @@
+package manager
+
+type Event interface {
+	ToJson()
+}
+type EventHandler interface {
+	Handle(e Event)
+}

listener.go

@@ -0,0 +1,13 @@
+package manager
+
+type SyncHandler struct{}
+
+func (_ *SyncHandler) Handle() {
+
+}
+
+type RecvHandler struct{}
+
+func (_ *RecvHandler) Handle() {
+
+}

manager.go

@@ -1,27 +1,75 @@
 package manager
 
 import (
-	"context"
-	"fmt"
-	"time"
+	"bufio"
+	"encoding/json"
+	"log"
 
-	"git.godopu.net/lab/etri-smartfarm-poc-controller-serial/puserial"
-	"github.com/rjeczalik/notify"
+	"github.com/jacobsa/go-serial/serial"
 )
 
-func Run() {
-	fmt.Println("Hello world")
+type _manager struct {
+	devices      map[string]*_device
+	SyncListener EventHandler
+	RecvListener EventHandler
+}
 
-	ctx, _ := context.WithTimeout(context.Background(), time.Second*10)
-	ch_discover := make(chan notify.EventInfo)
-	go puserial.WatchNewDevice(ctx, ch_discover)
+func (m *_manager) onAdd(iface string) {
+	err := ChangePermission(iface)
+	if err != nil {
+		panic(err)
+	}
+
+	// Set up options.
+	options := serial.OpenOptions{
+		PortName:        iface,
+		BaudRate:        9600,
+		DataBits:        8,
+		StopBits:        1,
+		MinimumReadSize: 16,
+	}
+
+	// Open the port.
+	go func() {
+		port, err := serial.Open(options)
+		if err != nil {
+			log.Fatalf("serial.Open: %v", err)
+		}
+
+		reader := bufio.NewReader(port)
 
 		for {
-		e, ok := <-ch_discover
-		if !ok {
-			fmt.Println("byebye~!")
+			port.Write([]byte("Introduce\n"))
+
+			b, _, err := reader.ReadLine()
+			if err != nil {
 				return
 			}
-		fmt.Println(e)
+
+			var obj map[string]interface{}
+			err = json.Unmarshal(b, &obj)
+			if err != nil {
+				continue
+			}
+
+			uuid, ok := obj["uuid"]
+			if ok {
+				m.devices[iface] = &_device{
+					UUID:      uuid.(string),
+					IfaceName: iface,
+					Iface:     port,
+				}
+				break
 			}
 		}
+	}()
+
+}
+
+func (m *_manager) onSync(e Event) {
+
+}
+
+func (m *_manager) onRecv(e Event) {
+
+}

model.go

@@ -0,0 +1,14 @@
+package manager
+
+import "io"
+
+type _device struct {
+	UUID      string
+	IfaceName string
+	Iface     io.ReadWriter
+	states    []map[string]interface{}
+}
+
+type RecvEvent struct {
+	Params map[string]interface{}
+}

puserial/serial.go

@@ -2,12 +2,29 @@ package puserial
 
 import (
 	"context"
+	"errors"
 	"fmt"
+	"io/ioutil"
+	"path/filepath"
 	"strings"
 
 	"github.com/rjeczalik/notify"
 )
 
+func InitDevice() (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 WatchNewDevice(ctx context.Context, ch_discover chan<- notify.EventInfo) error {
 	defer close(ch_discover)
 
@@ -20,7 +37,6 @@ func WatchNewDevice(ctx context.Context, ch_discover chan<- notify.EventInfo) er
 	for {
 		select {
 		case <-ctx.Done():
-			fmt.Println("routine bye")
 			return nil
 		case e := <-filter:
 			if strings.Contains(e.Path(), "/dev/ttyACM") {