Big Gotool Refactoring

- Added Event Bus
- Reworked Package Parsing
- Rewokred Frame Parsing

goTool/UARTCom/com.go

@@ -1,358 +0,0 @@
-package main
-
-import (
-	"encoding/binary"
-	"fmt"
-	"log"
-	"math"
-	"time"
-
-	"github.com/pterm/pterm"
-	"go.bug.st/serial"
-)
-
-type ParserState int
-
-const (
-	// MISC
-	UART_ECHO         = 0x01
-	UART_VERSION      = 0x02
-	UART_CLIENT_INFO  = 0x03
-	UART_CLIENT_INPUT = 0x04
-
-	// OTA
-	UART_OTA_START        = 0x10
-	UART_OTA_PAYLOAD      = 0x11
-	UART_OTA_END          = 0x12
-	UART_OTA_STATUS       = 0x13
-	UART_OTA_START_ESPNOW = 0x14
-)
-
-const (
-	WAITING_FOR_START_BYTE ParserState = iota
-	ESCAPED_MESSAGE_ID
-	GET_MESSAGE_ID
-	IN_PAYLOD
-	ESCAPED_PAYLOAD_BYTE
-)
-
-const (
-	START_BYTE  = 0xAA
-	ESCAPE_BYTE = 0xBB
-	END_BYTE    = 0xCC
-)
-
-type ParseError int
-
-const (
-	WRONG_CHECKSUM ParseError = iota
-	UNEXPECETD_BYTE
-)
-
-type MessageReceive struct {
-	raw_message     []byte
-	parsed_message  []byte
-	checksum        byte
-	error           ParseError
-	state           ParserState
-	write_index     int
-	raw_write_index int
-}
-
-type OTASyncManager struct {
-	OTA_MessageCounter         int
-	OTA_PayloadMessageSequence int
-	NewOTAMessage              chan MessageReceive
-	TimeoutMessage             time.Duration
-}
-
-func (ot *OTASyncManager) WaitForNextMessageTimeout() (*MessageReceive, error) {
-	select {
-	case msg := <-ot.NewOTAMessage:
-		return &msg, nil
-	case <-time.After(ot.TimeoutMessage):
-		return nil, fmt.Errorf("Message Timeout")
-	}
-}
-
-func initMessageReceive(mr *MessageReceive) {
-	mr.raw_message = make([]byte, 1024*4)
-	mr.parsed_message = make([]byte, 1024*4)
-	mr.checksum = 0
-	mr.error = 0
-	mr.write_index = 0
-	mr.raw_write_index = 0
-	mr.state = WAITING_FOR_START_BYTE
-}
-
-func addByteToRawBuffer(mr *MessageReceive, pbyte byte) {
-	mr.raw_message[mr.raw_write_index] = pbyte
-	mr.raw_write_index += 1
-}
-func addByteToParsedBuffer(mr *MessageReceive, pbyte byte) {
-	mr.parsed_message[mr.write_index] = pbyte
-	mr.write_index += 1
-	mr.checksum ^= pbyte
-}
-
-func parse_uart_ota_payload_payload(payloadBuffer []byte, payload_len int) {
-	//fmt.Printf("RAW BUFFER: % 02X", payloadBuffer[:payload_len])
-	if payload_len != 4 {
-		fmt.Printf("Payload should be 4 is %v", payload_len)
-		return
-	}
-
-	fmt.Printf("Sequence %v, WriteIndex %v", binary.LittleEndian.Uint16(payloadBuffer[0:1]), binary.LittleEndian.Uint16(payloadBuffer[2:3]))
-}
-
-func parse_uart_version_payload(payloadBuffer []byte, payload_len int) {
-	type payload_data struct {
-		Version   uint16
-		BuildHash [7]uint8
-	}
-
-	tableHeaders := pterm.TableData{
-		{"Version", "Buildhash"},
-	}
-
-	tableData := tableHeaders
-
-	tableData = append(tableData, []string{
-		fmt.Sprintf("%d", binary.LittleEndian.Uint16(payloadBuffer[1:3])),
-		fmt.Sprintf("%s", payloadBuffer[3:10]),
-	})
-
-	err := pterm.DefaultTable.WithHasHeader().WithBoxed().WithData(tableData).Render()
-	if err != nil {
-		fmt.Printf("Fehler beim Rendern der Tabelle: %s\n", err)
-	}
-
-}
-
-func parse_uart_client_info_payload(payloadBuffer []byte, payload_len int) {
-
-	type payload_data struct {
-		ClientID           uint8
-		IsAvailable        uint8
-		SlotIsUsed         uint8
-		MACAddr            [6]uint8
-		LastPing           uint32
-		LastSuccessfulPing uint32
-		Version            uint16
-	}
-
-	tableHeaders := pterm.TableData{
-		{"Client ID", "Verfügbar", "Genutzt", "MAC-Adresse", "Last Ping", "Letzter Erfolg Ping", "Version"},
-	}
-
-	tableData := tableHeaders
-
-	currentOffset := 2
-
-	const (
-		ENTRY_LEN                = 19
-		OFFSET_MAC_ADDR          = 3
-		OFFSET_LAST_PING         = 9
-		OFFSET_LAST_SUCCESS_PING = 13
-		OFFSET_VERSION           = 17
-	)
-
-	for i := 0; i < int(payloadBuffer[1]); i++ {
-		if currentOffset+ENTRY_LEN > payload_len {
-			fmt.Printf("Fehler: Payload zu kurz für Client-Eintrag %d\n", i)
-			break
-		}
-
-		entryBytes := payloadBuffer[currentOffset : currentOffset+ENTRY_LEN]
-
-		var clientData payload_data
-
-		clientData.ClientID = entryBytes[0]
-		clientData.IsAvailable = entryBytes[1]
-		clientData.SlotIsUsed = entryBytes[2]
-
-		copy(clientData.MACAddr[:], entryBytes[OFFSET_MAC_ADDR:OFFSET_MAC_ADDR+6])
-
-		clientData.LastPing = binary.LittleEndian.Uint32(entryBytes[OFFSET_LAST_PING : OFFSET_LAST_PING+4])
-		clientData.LastSuccessfulPing = binary.LittleEndian.Uint32(entryBytes[OFFSET_LAST_SUCCESS_PING : OFFSET_LAST_SUCCESS_PING+4])
-		clientData.Version = binary.LittleEndian.Uint16(entryBytes[OFFSET_VERSION : OFFSET_VERSION+2])
-
-		// Füge die geparsten Daten als String-Slice zur Tabelle hinzu
-		tableData = append(tableData, []string{
-			fmt.Sprintf("%d", clientData.ClientID),
-			fmt.Sprintf("%d", clientData.IsAvailable),
-			fmt.Sprintf("%d", clientData.SlotIsUsed),
-			fmt.Sprintf("%X:%X:%X:%X:%X:%X",
-				clientData.MACAddr[0], clientData.MACAddr[1], clientData.MACAddr[2],
-				clientData.MACAddr[3], clientData.MACAddr[4], clientData.MACAddr[5]),
-			fmt.Sprintf("%d", clientData.LastPing),
-			fmt.Sprintf("%d", clientData.LastSuccessfulPing),
-			fmt.Sprintf("%d", clientData.Version),
-		})
-
-		currentOffset += ENTRY_LEN
-	}
-	err := pterm.DefaultTable.WithHasHeader().WithBoxed().WithData(tableData).Render()
-	if err != nil {
-		fmt.Printf("Fehler beim Rendern der Tabelle: %s\n", err)
-	}
-}
-
-func parse_uart_client_input(payloadBuffer []byte, payload_len int) {
-
-	clientCount := payloadBuffer[1]
-	fmt.Printf("Client Count %d\n", clientCount)
-	clientInputLen := 13
-
-	for i := 0; i < int(clientCount); i++ {
-		offset := 2 + (i * clientInputLen)
-
-		// --- Client ID (uint8) ---
-		clientID := payloadBuffer[offset]
-		offset += 1
-
-		fmt.Printf("Client: %d\n", clientID)
-
-		// --- Lage X (float32) ---
-		xBits := binary.LittleEndian.Uint32(payloadBuffer[offset : offset+4])
-		lageX := math.Float32frombits(xBits)
-		offset += 4
-
-		fmt.Printf("\tLAGE_X: %f\n", lageX)
-
-		// --- Lage Y (float32) ---
-		yBits := binary.LittleEndian.Uint32(payloadBuffer[offset : offset+4])
-		lageY := math.Float32frombits(yBits)
-		offset += 4
-
-		fmt.Printf("\tLAGE_Y: %f\n", lageY)
-
-		// --- Bitmask (int32) ---
-		maskBits := binary.LittleEndian.Uint32(payloadBuffer[offset : offset+4])
-		bitmask := uint32(maskBits)
-		offset += 4
-
-		fmt.Printf("\tBITMASK: %032b\n", bitmask)
-	}
-}
-
-func message_receive_callback(mr MessageReceive) {
-	log.Printf("Message Received: % 02X\n", mr.raw_message[:mr.raw_write_index])
-	switch mr.parsed_message[0] {
-	case byte(UART_ECHO):
-	case UART_VERSION:
-		parse_uart_version_payload(mr.parsed_message, mr.write_index)
-	case UART_CLIENT_INFO:
-		parse_uart_client_info_payload(mr.parsed_message, mr.write_index)
-	case UART_OTA_START:
-		OTA_UpdateHandler.NewOTAMessage <- mr
-	case UART_OTA_PAYLOAD:
-		parse_uart_ota_payload_payload(mr.parsed_message, mr.write_index)
-		OTA_UpdateHandler.NewOTAMessage <- mr
-	case UART_OTA_END:
-		OTA_UpdateHandler.NewOTAMessage <- mr
-	case UART_OTA_STATUS:
-		OTA_UpdateHandler.NewOTAMessage <- mr
-	case UART_CLIENT_INPUT:
-		parse_uart_client_input(mr.parsed_message, mr.write_index)
-	}
-}
-
-func message_receive_failed_callback(mr MessageReceive) {
-	log.Printf("Error Message Received: % 02X\n", mr.raw_message[:mr.raw_write_index])
-}
-
-func parseByte(mr *MessageReceive, pbyte byte) {
-	addByteToRawBuffer(mr, pbyte)
-	switch mr.state {
-	case WAITING_FOR_START_BYTE:
-		if pbyte == START_BYTE {
-			initMessageReceive(mr)
-			mr.state = GET_MESSAGE_ID
-			addByteToRawBuffer(mr, pbyte)
-		}
-		// ignore every other byte
-	case GET_MESSAGE_ID:
-		if pbyte == ESCAPE_BYTE {
-			mr.state = ESCAPED_MESSAGE_ID
-		} else {
-			addByteToParsedBuffer(mr, pbyte)
-			mr.state = IN_PAYLOD
-		}
-	case ESCAPED_MESSAGE_ID:
-		addByteToParsedBuffer(mr, pbyte)
-		mr.state = IN_PAYLOD
-	case IN_PAYLOD:
-		if pbyte == ESCAPE_BYTE {
-			mr.state = ESCAPED_PAYLOAD_BYTE
-			break
-		}
-		if pbyte == START_BYTE {
-			mr.error = UNEXPECETD_BYTE
-			go message_receive_failed_callback(*mr)
-			initMessageReceive(mr)
-			return
-		}
-		if pbyte == END_BYTE {
-			if mr.checksum != 0 { // checksum wrong
-				mr.error = WRONG_CHECKSUM
-				go message_receive_failed_callback(*mr)
-				initMessageReceive(mr)
-				return
-			}
-			go message_receive_callback(*mr)
-			initMessageReceive(mr)
-			break
-		}
-		// normal case
-		addByteToParsedBuffer(mr, pbyte)
-	case ESCAPED_PAYLOAD_BYTE:
-		addByteToParsedBuffer(mr, pbyte)
-		mr.state = IN_PAYLOD
-	default:
-		panic(fmt.Sprintf("unexpected main.ParserState: %#v", mr.state))
-	}
-}
-
-func buildMessage(payloadBuffer []byte, payload_len int, sendBuffer []byte) int {
-	var writeIndex int
-	checksum := byte(0x00)
-	writeIndex = 0
-	sendBuffer[writeIndex] = START_BYTE
-	writeIndex++
-	for i := range payload_len {
-		b := payloadBuffer[i]
-		if b == START_BYTE || b == ESCAPE_BYTE || b == END_BYTE {
-			sendBuffer[writeIndex] = ESCAPE_BYTE
-			writeIndex++
-		}
-		sendBuffer[writeIndex] = b
-		writeIndex++
-		checksum ^= b
-	}
-	if checksum == START_BYTE || checksum == ESCAPE_BYTE || checksum == END_BYTE {
-		sendBuffer[writeIndex] = ESCAPE_BYTE
-		writeIndex++
-	}
-	sendBuffer[writeIndex] = checksum
-	writeIndex++
-	sendBuffer[writeIndex] = END_BYTE
-	writeIndex++
-	return writeIndex
-}
-
-func sendMessage(port serial.Port, sendBuffer []byte) {
-	n, err := port.Write(sendBuffer)
-	if err != nil {
-		log.Printf("Could not Send %v to Serial Port", sendBuffer)
-	}
-	if n < len(sendBuffer) {
-		log.Printf("Did not send all data %v, only send %v", len(sendBuffer), n)
-	}
-	fmt.Printf("Send Message % 02X\n", sendBuffer[:n])
-}
-
-var (
-	updatePath        string
-	OTA_UpdateHandler OTASyncManager
-)

goTool/api/frontend.go

@@ -0,0 +1,11 @@
+package api
+
+const (
+	TopicFrontendCmd = "front:cmd"
+)
+
+type FrontendCmd struct {
+	Action string `json:"action"`
+	ID     byte   `json:"id"`
+	Data   []byte `json:"data"`
+}

goTool/api/uart.go

@@ -0,0 +1,39 @@
+package api
+
+// Topics
+const (
+	TopicUARTRx    = "uart:rx"
+	TopicUARTTx    = "uart:tx"
+	TopicUARTError = "uart:error"
+)
+
+type Frame struct {
+	Time uint64
+	ID   byte
+	Data []byte
+}
+
+const (
+	CmdEcho        byte = 0x01
+	CmdVersion     byte = 0x02
+	CmdClientInfo  byte = 0x03
+	CmdClientInput byte = 0x04
+)
+
+type PayloadVersion struct {
+	Version   uint16
+	Buildhash [7]uint8
+}
+
+type PayloadClientInfo struct {
+	ClientID           uint8
+	IsAvailable        uint8
+	SlotIsUsed         uint8
+	MACAddr            [6]uint8
+	LastPing           uint32
+	LastSuccessfulPing uint32
+	Version            uint16
+}
+
+type PayloadClientInput struct {
+}

goTool/config.go

@@ -0,0 +1,8 @@
+package main
+
+type Config struct {
+	Port     int
+	Host     string
+	UartPort string
+	Baudrate int
+}

goTool/eventbus/bus.go

@@ -0,0 +1,64 @@
+package eventbus
+
+import (
+	"log"
+	"sync"
+)
+
+type EventBus interface {
+	Subscribe(topic string) chan any
+	Publish(topic string, data any)
+	Unsubscribe(topic string, ch chan any)
+}
+
+type EBus struct {
+	mu     sync.RWMutex
+	topics map[string][]chan any
+}
+
+func New() *EBus {
+	return &EBus{
+		mu:     sync.RWMutex{},
+		topics: map[string][]chan any{},
+	}
+}
+
+func (eb *EBus) Subscribe(topic string) chan any {
+	eb.mu.Lock()
+	defer eb.mu.Unlock()
+
+	ch := make(chan any, 20)
+	eb.topics[topic] = append(eb.topics[topic], ch)
+	return ch
+}
+
+func (eb *EBus) Publish(topic string, data any) {
+	eb.mu.RLock()
+	defer eb.mu.RUnlock()
+	for _, ch := range eb.topics[topic] {
+		select {
+		case ch <- data:
+		default:
+			log.Printf("[Event Bus]: Could not pass Message %v to %v channel full", data, topic)
+		}
+	}
+}
+
+func (eb *EBus) Unsubscribe(topic string, c chan any) {
+	eb.mu.Lock()
+	defer eb.mu.Unlock()
+
+	channels, ok := eb.topics[topic]
+	if !ok {
+		return
+	}
+
+	for i, ch := range channels {
+		if ch != c {
+			eb.topics[topic] = append(channels[:i], channels[i+1:]...) // example: 5 channels max i=3 channels[:3] (0,1,2) + channels[3+1:] (4,5)
+
+			close(ch)
+			return
+		}
+	}
+}

goTool/frontend/server.go

@@ -1,71 +1,102 @@
 package frontend
 
 import (
+	"context"
 	"embed"
-	"fmt"
+	"io/fs"
 	"log"
 	"net/http"
+	"time"
 
+	"alox.tool/api"
+	"alox.tool/eventbus"
 	"github.com/gorilla/websocket"
 )
 
 //go:embed www
 var staticFiles embed.FS
 
-func home(w http.ResponseWriter, r *http.Request) {
+var upgrader = websocket.Upgrader{}
-	content, err := staticFiles.ReadFile("www/index.html")
+
+type FServer struct {
+	bus eventbus.EventBus
+	mux *http.ServeMux
+}
+
+func New(bus eventbus.EventBus) *FServer {
+	fsrv := &FServer{
+		bus: bus,
+		mux: http.NewServeMux(),
+	}
+	fsrv.routes()
+	return fsrv
+}
+
+func (fsrv *FServer) routes() {
+	// Statische Dateien aus dem Embed-FS
+	// "www" Präfix entfernen, damit index.html unter / verfügbar ist
+	root, _ := fs.Sub(staticFiles, "www")
+	fsrv.mux.Handle("/", http.FileServer(http.FS(root)))
+
+	// WebSocket Endpunkt
+	fsrv.mux.HandleFunc("/ws", fsrv.handleWS)
+}
+
+func (fsrv *FServer) handleWS(w http.ResponseWriter, r *http.Request) {
+	conn, err := upgrader.Upgrade(w, r, nil)
 	if err != nil {
-		log.Printf("Could not Read file %v", err)
+		log.Printf("Upgrade error: %v", err)
-	}
-	fmt.Fprintf(w, string(content))
-}
-
-var upgrader = websocket.Upgrader{} // use default options
-
-type ValueChangeResp struct {
-	Cmd   string `json:"cmd"`
-	Name  string `json:"name"`
-	Value string `json:"value"`
-}
-
-func echo(w http.ResponseWriter, r *http.Request) {
-
-	type resp struct {
-		Cmd string `json:"cmd"`
-		Arg string `json:"arg"`
-	}
-
-	c, err := upgrader.Upgrade(w, r, nil)
-	if err != nil {
-		log.Print("upgrade:", err)
 		return
 	}
-	defer c.Close()
+	defer conn.Close()
+
+	// Kanäle für die Hardware-Events abonnieren
+	rxChan := fsrv.bus.Subscribe(api.TopicUARTRx)
+	txChan := fsrv.bus.Subscribe(api.TopicUARTTx)
+
+	// Context nutzen, um Goroutinen zu stoppen, wenn die Verbindung abreißt
+	ctx, cancel := context.WithCancel(r.Context())
+	defer cancel()
+
+	// WRITER: Send Events to Browser
+	go func() {
 		for {
-		_, message, err := c.ReadMessage()
+			select {
-		if err != nil {
+			case <-ctx.Done():
-			log.Println("read:", err)
+				return
+			case f := <-rxChan:
+				if err := conn.WriteJSON(map[string]any{"type": "rx", "frame": f}); err != nil {
+					return
+				}
+			case f := <-txChan:
+				if err := conn.WriteJSON(map[string]any{"type": "tx", "frame": f}); err != nil {
+					return
+				}
+			}
+		}
+	}()
+
+	// READER: Commands from Browser
+	for {
+		var cmd api.FrontendCmd
+		if err := conn.ReadJSON(&cmd); err != nil {
+			log.Printf("WS Read Error: %v", err)
 			break
 		}
-		log.Printf("recv: %s", message)
 
-		jsonResp := resp{
+		fsrv.bus.Publish(api.TopicFrontendCmd, cmd)
-			Cmd: "echo",
+		log.Printf("Browser Action: %s auf ID 0x%02X", cmd.Action, cmd.ID)
-			Arg: string(message),
-		}
-
-		err = c.WriteJSON(jsonResp)
-		if err != nil {
-			log.Println("write:", err)
-			break
-		}
 	}
 }
 
-func StartServer() {
+func (fsrv *FServer) Start(addr string) error {
-	http.Handle("/www/", http.FileServer(http.FS(staticFiles)))
+	server := &http.Server{
-	http.HandleFunc("/", home)
+		Addr:         addr,
-	http.HandleFunc("/echo", echo)
+		Handler:      fsrv.mux,
-
+		ReadTimeout:  5 * time.Second,
-	http.ListenAndServe("0.0.0.0:8000", nil)
+		WriteTimeout: 10 * time.Second,
+	}
+
+	log.Printf("Frontend Server gestartet auf %s", addr)
+	return server.ListenAndServe()
 }

goTool/main.go

@@ -1,560 +1,85 @@
 package main
 
 import (
-	"context"
-	"encoding/binary"
-	"flag"
 	"fmt"
 	"log"
-	"math"
-	"os"
-	"strconv"
 	"time"
 
+	"alox.tool/api"
+	"alox.tool/eventbus"
 	"alox.tool/frontend"
-	"github.com/pterm/pterm"
+	"alox.tool/uart"
-	"go.bug.st/serial"
-)
-
-type ParserState int
-
-const (
-	// MISC
-	UART_ECHO         = 0x01
-	UART_VERSION      = 0x02
-	UART_CLIENT_INFO  = 0x03
-	UART_CLIENT_INPUT = 0x04
-
-	// OTA
-	UART_OTA_START        = 0x10
-	UART_OTA_PAYLOAD      = 0x11
-	UART_OTA_END          = 0x12
-	UART_OTA_STATUS       = 0x13
-	UART_OTA_START_ESPNOW = 0x14
-)
-
-const (
-	WAITING_FOR_START_BYTE ParserState = iota
-	ESCAPED_MESSAGE_ID
-	GET_MESSAGE_ID
-	IN_PAYLOD
-	ESCAPED_PAYLOAD_BYTE
-)
-
-const (
-	START_BYTE  = 0xAA
-	ESCAPE_BYTE = 0xBB
-	END_BYTE    = 0xCC
-)
-
-type ParseError int
-
-const (
-	WRONG_CHECKSUM ParseError = iota
-	UNEXPECETD_BYTE
-)
-
-type MessageReceive struct {
-	raw_message     []byte
-	parsed_message  []byte
-	checksum        byte
-	error           ParseError
-	state           ParserState
-	write_index     int
-	raw_write_index int
-}
-
-type OTASyncManager struct {
-	OTA_MessageCounter         int
-	OTA_PayloadMessageSequence int
-	NewOTAMessage              chan MessageReceive
-	TimeoutMessage             time.Duration
-}
-
-func (ot *OTASyncManager) WaitForNextMessageTimeout() (*MessageReceive, error) {
-	select {
-	case msg := <-ot.NewOTAMessage:
-		return &msg, nil
-	case <-time.After(ot.TimeoutMessage):
-		return nil, fmt.Errorf("Message Timeout")
-	}
-}
-
-func initMessageReceive(mr *MessageReceive) {
-	mr.raw_message = make([]byte, 1024*4)
-	mr.parsed_message = make([]byte, 1024*4)
-	mr.checksum = 0
-	mr.error = 0
-	mr.write_index = 0
-	mr.raw_write_index = 0
-	mr.state = WAITING_FOR_START_BYTE
-}
-
-func addByteToRawBuffer(mr *MessageReceive, pbyte byte) {
-	mr.raw_message[mr.raw_write_index] = pbyte
-	mr.raw_write_index += 1
-}
-func addByteToParsedBuffer(mr *MessageReceive, pbyte byte) {
-	mr.parsed_message[mr.write_index] = pbyte
-	mr.write_index += 1
-	mr.checksum ^= pbyte
-}
-
-func parse_uart_ota_payload_payload(payloadBuffer []byte, payload_len int) {
-	//fmt.Printf("RAW BUFFER: % 02X", payloadBuffer[:payload_len])
-	if payload_len != 4 {
-		fmt.Printf("Payload should be 4 is %v", payload_len)
-		return
-	}
-
-	fmt.Printf("Sequence %v, WriteIndex %v", binary.LittleEndian.Uint16(payloadBuffer[0:1]), binary.LittleEndian.Uint16(payloadBuffer[2:3]))
-}
-
-func parse_uart_version_payload(payloadBuffer []byte, payload_len int) {
-	type payload_data struct {
-		Version   uint16
-		BuildHash [7]uint8
-	}
-
-	tableHeaders := pterm.TableData{
-		{"Version", "Buildhash"},
-	}
-
-	tableData := tableHeaders
-
-	tableData = append(tableData, []string{
-		fmt.Sprintf("%d", binary.LittleEndian.Uint16(payloadBuffer[1:3])),
-		fmt.Sprintf("%s", payloadBuffer[3:10]),
-	})
-
-	err := pterm.DefaultTable.WithHasHeader().WithBoxed().WithData(tableData).Render()
-	if err != nil {
-		fmt.Printf("Fehler beim Rendern der Tabelle: %s\n", err)
-	}
-
-}
-
-func parse_uart_client_info_payload(payloadBuffer []byte, payload_len int) {
-
-	type payload_data struct {
-		ClientID           uint8
-		IsAvailable        uint8
-		SlotIsUsed         uint8
-		MACAddr            [6]uint8
-		LastPing           uint32
-		LastSuccessfulPing uint32
-		Version            uint16
-	}
-
-	tableHeaders := pterm.TableData{
-		{"Client ID", "Verfügbar", "Genutzt", "MAC-Adresse", "Last Ping", "Letzter Erfolg Ping", "Version"},
-	}
-
-	tableData := tableHeaders
-
-	currentOffset := 2
-
-	const (
-		ENTRY_LEN                = 19
-		OFFSET_MAC_ADDR          = 3
-		OFFSET_LAST_PING         = 9
-		OFFSET_LAST_SUCCESS_PING = 13
-		OFFSET_VERSION           = 17
-	)
-
-	for i := 0; i < int(payloadBuffer[1]); i++ {
-		if currentOffset+ENTRY_LEN > payload_len {
-			fmt.Printf("Fehler: Payload zu kurz für Client-Eintrag %d\n", i)
-			break
-		}
-
-		entryBytes := payloadBuffer[currentOffset : currentOffset+ENTRY_LEN]
-
-		var clientData payload_data
-
-		clientData.ClientID = entryBytes[0]
-		clientData.IsAvailable = entryBytes[1]
-		clientData.SlotIsUsed = entryBytes[2]
-
-		copy(clientData.MACAddr[:], entryBytes[OFFSET_MAC_ADDR:OFFSET_MAC_ADDR+6])
-
-		clientData.LastPing = binary.LittleEndian.Uint32(entryBytes[OFFSET_LAST_PING : OFFSET_LAST_PING+4])
-		clientData.LastSuccessfulPing = binary.LittleEndian.Uint32(entryBytes[OFFSET_LAST_SUCCESS_PING : OFFSET_LAST_SUCCESS_PING+4])
-		clientData.Version = binary.LittleEndian.Uint16(entryBytes[OFFSET_VERSION : OFFSET_VERSION+2])
-
-		// Füge die geparsten Daten als String-Slice zur Tabelle hinzu
-		tableData = append(tableData, []string{
-			fmt.Sprintf("%d", clientData.ClientID),
-			fmt.Sprintf("%d", clientData.IsAvailable),
-			fmt.Sprintf("%d", clientData.SlotIsUsed),
-			fmt.Sprintf("%X:%X:%X:%X:%X:%X",
-				clientData.MACAddr[0], clientData.MACAddr[1], clientData.MACAddr[2],
-				clientData.MACAddr[3], clientData.MACAddr[4], clientData.MACAddr[5]),
-			fmt.Sprintf("%d", clientData.LastPing),
-			fmt.Sprintf("%d", clientData.LastSuccessfulPing),
-			fmt.Sprintf("%d", clientData.Version),
-		})
-
-		currentOffset += ENTRY_LEN
-	}
-	err := pterm.DefaultTable.WithHasHeader().WithBoxed().WithData(tableData).Render()
-	if err != nil {
-		fmt.Printf("Fehler beim Rendern der Tabelle: %s\n", err)
-	}
-}
-
-func parse_uart_client_input(payloadBuffer []byte, payload_len int) {
-
-	clientCount := payloadBuffer[1]
-	fmt.Printf("Client Count %d\n", clientCount)
-	clientInputLen := 13
-
-	for i := 0; i < int(clientCount); i++ {
-		offset := 2 + (i * clientInputLen)
-
-		// --- Client ID (uint8) ---
-		clientID := payloadBuffer[offset]
-		offset += 1
-
-		fmt.Printf("Client: %d\n", clientID)
-
-		// --- Lage X (float32) ---
-		xBits := binary.LittleEndian.Uint32(payloadBuffer[offset : offset+4])
-		lageX := math.Float32frombits(xBits)
-		offset += 4
-
-		fmt.Printf("\tLAGE_X: %f\n", lageX)
-
-		// --- Lage Y (float32) ---
-		yBits := binary.LittleEndian.Uint32(payloadBuffer[offset : offset+4])
-		lageY := math.Float32frombits(yBits)
-		offset += 4
-
-		fmt.Printf("\tLAGE_Y: %f\n", lageY)
-
-		// --- Bitmask (int32) ---
-		maskBits := binary.LittleEndian.Uint32(payloadBuffer[offset : offset+4])
-		bitmask := uint32(maskBits)
-		offset += 4
-
-		fmt.Printf("\tBITMASK: %032b\n", bitmask)
-	}
-}
-
-func message_receive_callback(mr MessageReceive) {
-	log.Printf("Message Received: % 02X\n", mr.raw_message[:mr.raw_write_index])
-	switch mr.parsed_message[0] {
-	case byte(UART_ECHO):
-	case UART_VERSION:
-		parse_uart_version_payload(mr.parsed_message, mr.write_index)
-	case UART_CLIENT_INFO:
-		parse_uart_client_info_payload(mr.parsed_message, mr.write_index)
-	case UART_OTA_START:
-		OTA_UpdateHandler.NewOTAMessage <- mr
-	case UART_OTA_PAYLOAD:
-		parse_uart_ota_payload_payload(mr.parsed_message, mr.write_index)
-		OTA_UpdateHandler.NewOTAMessage <- mr
-	case UART_OTA_END:
-		OTA_UpdateHandler.NewOTAMessage <- mr
-	case UART_OTA_STATUS:
-		OTA_UpdateHandler.NewOTAMessage <- mr
-	case UART_CLIENT_INPUT:
-		parse_uart_client_input(mr.parsed_message, mr.write_index)
-	}
-}
-
-func message_receive_failed_callback(mr MessageReceive) {
-	log.Printf("Error Message Received: % 02X\n", mr.raw_message[:mr.raw_write_index])
-}
-
-func parseByte(mr *MessageReceive, pbyte byte) {
-	addByteToRawBuffer(mr, pbyte)
-	switch mr.state {
-	case WAITING_FOR_START_BYTE:
-		if pbyte == START_BYTE {
-			initMessageReceive(mr)
-			mr.state = GET_MESSAGE_ID
-			addByteToRawBuffer(mr, pbyte)
-		}
-		// ignore every other byte
-	case GET_MESSAGE_ID:
-		if pbyte == ESCAPE_BYTE {
-			mr.state = ESCAPED_MESSAGE_ID
-		} else {
-			addByteToParsedBuffer(mr, pbyte)
-			mr.state = IN_PAYLOD
-		}
-	case ESCAPED_MESSAGE_ID:
-		addByteToParsedBuffer(mr, pbyte)
-		mr.state = IN_PAYLOD
-	case IN_PAYLOD:
-		if pbyte == ESCAPE_BYTE {
-			mr.state = ESCAPED_PAYLOAD_BYTE
-			break
-		}
-		if pbyte == START_BYTE {
-			mr.error = UNEXPECETD_BYTE
-			go message_receive_failed_callback(*mr)
-			initMessageReceive(mr)
-			return
-		}
-		if pbyte == END_BYTE {
-			if mr.checksum != 0 { // checksum wrong
-				mr.error = WRONG_CHECKSUM
-				go message_receive_failed_callback(*mr)
-				initMessageReceive(mr)
-				return
-			}
-			go message_receive_callback(*mr)
-			initMessageReceive(mr)
-			break
-		}
-		// normal case
-		addByteToParsedBuffer(mr, pbyte)
-	case ESCAPED_PAYLOAD_BYTE:
-		addByteToParsedBuffer(mr, pbyte)
-		mr.state = IN_PAYLOD
-	default:
-		panic(fmt.Sprintf("unexpected main.ParserState: %#v", mr.state))
-	}
-}
-
-func buildMessage(payloadBuffer []byte, payload_len int, sendBuffer []byte) int {
-	var writeIndex int
-	checksum := byte(0x00)
-	writeIndex = 0
-	sendBuffer[writeIndex] = START_BYTE
-	writeIndex++
-	for i := range payload_len {
-		b := payloadBuffer[i]
-		if b == START_BYTE || b == ESCAPE_BYTE || b == END_BYTE {
-			sendBuffer[writeIndex] = ESCAPE_BYTE
-			writeIndex++
-		}
-		sendBuffer[writeIndex] = b
-		writeIndex++
-		checksum ^= b
-	}
-	if checksum == START_BYTE || checksum == ESCAPE_BYTE || checksum == END_BYTE {
-		sendBuffer[writeIndex] = ESCAPE_BYTE
-		writeIndex++
-	}
-	sendBuffer[writeIndex] = checksum
-	writeIndex++
-	sendBuffer[writeIndex] = END_BYTE
-	writeIndex++
-	return writeIndex
-}
-
-func sendMessage(port serial.Port, sendBuffer []byte) {
-	n, err := port.Write(sendBuffer)
-	if err != nil {
-		log.Printf("Could not Send %v to Serial Port", sendBuffer)
-	}
-	if n < len(sendBuffer) {
-		log.Printf("Did not send all data %v, only send %v", len(sendBuffer), n)
-	}
-	fmt.Printf("Send Message % 02X\n", sendBuffer[:n])
-}
-
-var (
-	updatePath        string
-	OTA_UpdateHandler OTASyncManager
 )
 
 func main() {
-
+	config := Config{
-	frontend.StartServer()
+		Port:     8000,
-	os.Exit(0)
+		Host:     "0.0.0.0",
-
+		UartPort: "/dev/ttyUSB0",
-	flag.StringVar(&updatePath, "update", "", "Path to Updatefile")
+		Baudrate: 115200,
-	flag.Parse()
+	}
-
+	StartApp(config)
-	OTA_UpdateHandler = OTASyncManager{
-		OTA_MessageCounter:         0,
-		OTA_PayloadMessageSequence: 0,
-		NewOTAMessage:              make(chan MessageReceive),
-		TimeoutMessage:             time.Millisecond * 30000,
 }
 
-	mode := &serial.Mode{
+func StartApp(config Config) {
-		//BaudRate: 115200,
+	bus := eventbus.New()
-		BaudRate: 921600,
+
-	}
+	com, err := uart.Connect(bus, config.UartPort, config.Baudrate)
-	port, err := serial.Open("/dev/ttyUSB0", mode)
 	if err != nil {
-		log.Fatal(err)
+		log.Printf("Could not Connect with Uart Device %v", err)
 	}
-
+	defer com.Close()
-	ctx, cancle := context.WithCancel(context.Background())
-	defer cancle()
 
 	go func() {
-		buff := make([]byte, 1024)
-		mr := MessageReceive{}
-		initMessageReceive(&mr)
 		for {
 			select {
-			case <-ctx.Done():
+			case msg := <-bus.Subscribe(api.TopicUARTTx):
-				return
+				log.Printf("MSG[TX]: % X", msg)
-			default:
+			case msg := <-bus.Subscribe(api.TopicUARTRx):
-				n, err := port.Read(buff)
+				log.Printf("MSG[RX]: % X", msg)
+				val, ok := msg.(api.Frame)
+				if !ok {
+					log.Printf("val is not type api.Frame its %T", val)
+					continue
+				}
+				log.Printf("[%d] Frame: %X, % X", val.Time, val.ID, val.Data)
+
+				switch val.ID {
+				case api.CmdEcho:
+				case api.CmdVersion:
+					v, err := uart.ParseFrameVersion(val)
 					if err != nil {
-					log.Print(err)
+						log.Printf("Could not Parse Version %v", err)
-					break
+						continue
 					}
-				if n == 0 {
+					log.Printf("Version Info %d %X", v.Version, v.Buildhash)
-					fmt.Println("\nEOF")
+				case api.CmdClientInfo:
-					break
+					v, err := uart.ParseFrameClientInfo(val)
+					if err != nil {
+						log.Printf("Could not Parse Client Info %v", err)
+						continue
+					}
+					for _, c := range v {
+						log.Printf("Client ID  %d", c.ClientID)
+						log.Printf("\tIsAvailable %d", c.IsAvailable)
+						log.Printf("\tLastPing %d", c.LastPing)
+						log.Printf("\tLastSuccessfulPing %d", c.LastSuccessfulPing)
+						log.Printf("\tSlotIsUsed %d", c.SlotIsUsed)
+						log.Printf("\tVersion %d", c.Version)
+						log.Printf("\tMACAddr % X", c.MACAddr)
 					}
-				for _, b := range buff[:n] {
-					parseByte(&mr, b)
 				}
-				//fmt.Printf("Empfangen: % 02X\n", string(buff[:n]))
-				break
 			}
 		}
 	}()
 
-	if updatePath != "" {
+	time.Sleep(time.Millisecond * 5)
-		// start update
-		update, err := os.ReadFile(updatePath)
-		if err != nil {
-			log.Printf("Could not read Update file %v", err)
-			return
-		}
-		log.Printf("Update Buffer read, update size %v", len(update))
-		log.Printf("Gonna break it down in 200 Bytes packages will send %v packages", len(update)/200)
 
-		// start
+	com.Send(api.CmdEcho, make([]byte, 0))
-		payload_buffer := make([]byte, 1024)
+	com.Send(api.CmdVersion, make([]byte, 0))
-		send_buffer := make([]byte, 1024)
+	com.Send(api.CmdClientInfo, make([]byte, 0))
-		payload_buffer[0] = UART_OTA_START
-		n := buildMessage(payload_buffer, 1, send_buffer)
-		sendMessage(port, send_buffer[:n])
-		msg, err := OTA_UpdateHandler.WaitForNextMessageTimeout()
-		if err != nil {
-			log.Printf("Error Message not acked %v", err)
-		} else {
-			if msg.parsed_message[2] != 0x00 {
-				log.Printf("Update Start failed %v", msg.parsed_message[2])
-				return
-			} else {
-				log.Printf("Update Start confirmed Updating Partition %v", msg.parsed_message[1])
-			}
-		}
 
-		update_write_index := 0
+	url := fmt.Sprintf("%s:%d", config.Host, config.Port)
-		// write update parts
+	fserver := frontend.New(bus)
-		for update_write_index < len(update) {
+	fserver.Start(url)
-			payload_buffer = make([]byte, 1024)
-			send_buffer = make([]byte, 1024)
-			payload_buffer[0] = UART_OTA_PAYLOAD
-
-			write_len := min(200, len(update)-update_write_index)
-
-			//end_payload_len := min(update_write_index+200, len(update))
-
-			copy(payload_buffer[1:write_len+1], update[update_write_index:update_write_index+write_len])
-			n = buildMessage(payload_buffer, write_len+1, send_buffer)
-			sendMessage(port, send_buffer[:n])
-			msg, err := OTA_UpdateHandler.WaitForNextMessageTimeout()
-			if err != nil {
-				log.Printf("Error Message not acked %v", err)
-				return
-			} else {
-				seqCounter := binary.LittleEndian.Uint16(msg.parsed_message[1:3])
-				buff_write_index := binary.LittleEndian.Uint16(msg.parsed_message[3:5])
-				log.Printf("Sequenzce Counter: %d, Update buffer Write Index: %d", seqCounter, buff_write_index)
-			}
-			update_write_index += 200
-		}
-
-		log.Printf("Update übertragen beende hier!!!")
-		// end
-		payload_buffer = make([]byte, 1024)
-		send_buffer = make([]byte, 1024)
-		payload_buffer[0] = UART_OTA_END
-		n = buildMessage(payload_buffer, 1, send_buffer)
-		sendMessage(port, send_buffer[:n])
-
-		_, err = OTA_UpdateHandler.WaitForNextMessageTimeout()
-		if err != nil {
-			log.Printf("Error Message not acked %v", err)
-			return
-		} else {
-			log.Printf("Message Waiting hat funktionioert")
-		}
-		return
-	}
-
-	for {
-		var input string
-		var input2 string
-		_, err := fmt.Scanln(&input, &input2)
-		if err != nil {
-			log.Fatalf("Could not read from stdin %v", err)
-			return
-		}
-		fmt.Printf("Input %v", input)
-
-		switch input {
-		case "q":
-			return
-		case "1":
-			payload_buffer := make([]byte, 1024)
-			send_buffer := make([]byte, 1024)
-			payload_buffer[0] = UART_ECHO
-			n := buildMessage(payload_buffer, 1, send_buffer)
-			sendMessage(port, send_buffer[:n])
-		case "2":
-			payload_buffer := make([]byte, 1024)
-			send_buffer := make([]byte, 1024)
-			payload_buffer[0] = UART_VERSION
-			n := buildMessage(payload_buffer, 1, send_buffer)
-			sendMessage(port, send_buffer[:n])
-		case "3":
-			payload_buffer := make([]byte, 1024)
-			send_buffer := make([]byte, 1024)
-			payload_buffer[0] = UART_CLIENT_INFO
-			n := buildMessage(payload_buffer, 1, send_buffer)
-			sendMessage(port, send_buffer[:n])
-		case "4": // start update
-			payload_buffer := make([]byte, 1024)
-			send_buffer := make([]byte, 1024)
-			payload_buffer[0] = UART_OTA_START
-			n := buildMessage(payload_buffer, 1, send_buffer)
-			sendMessage(port, send_buffer[:n])
-		case "5": // send payload
-			payload_buffer := make([]byte, 1024)
-			send_buffer := make([]byte, 1024)
-			payload_buffer[0] = UART_OTA_PAYLOAD
-			for i := range 200 {
-				payload_buffer[i+1] = byte(i)
-			}
-			n := buildMessage(payload_buffer, 201, send_buffer)
-			sendMessage(port, send_buffer[:n])
-		case "6": // end update
-		case "7": // Start OTA for ESP-NOW clients
-			payload_buffer := make([]byte, 1024)
-			send_buffer := make([]byte, 1024)
-			payload_buffer[0] = UART_OTA_START_ESPNOW
-			n := buildMessage(payload_buffer, 1, send_buffer)
-			sendMessage(port, send_buffer[:n])
-		case "8": // Get Fake Client Input
-			payload_buffer := make([]byte, 1024)
-			send_buffer := make([]byte, 1024)
-			payload_buffer[0] = UART_CLIENT_INPUT
-			seed, err := strconv.Atoi(input2)
-			if err != nil {
-				log.Printf("Could not parse %v to a number", input2)
-				return
-			}
-			payload_buffer[1] = byte(seed)
-			n := buildMessage(payload_buffer, 2, send_buffer)
-			sendMessage(port, send_buffer[:n])
-		default:
-			fmt.Printf("Not a valid input")
-		}
-	}
 }

goTool/testrunner/runner.go

@@ -0,0 +1,48 @@
+package testrunner
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"alox.tool/api"
+	"alox.tool/eventbus"
+	"alox.tool/uart"
+)
+
+type TestRunner struct {
+	bus eventbus.EventBus
+	com *uart.Com
+}
+
+func New(bus eventbus.EventBus, com *uart.Com) *TestRunner {
+	return &TestRunner{
+		bus: bus,
+		com: com,
+	}
+}
+
+func (tr *TestRunner) Expect(idToSend byte, payload []byte, expectedID byte, timeout time.Duration) (*api.Frame, error) {
+	rxChan := tr.bus.Subscribe(api.TopicUARTRx)
+	defer tr.bus.Unsubscribe(api.TopicUARTRx, rxChan)
+
+	if err := tr.com.Send(idToSend, payload); err != nil {
+		return nil, fmt.Errorf("send error: %w", err)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+
+	for {
+		select {
+		case <-ctx.Done():
+			return nil, fmt.Errorf("timeout waiting for ID 0x%02X", expectedID)
+		case frame := <-rxChan:
+			f := frame.(api.Frame)
+			if f.ID == expectedID {
+				return &f, nil
+			}
+			// Ignore other IDs and Messages on the Bus
+		}
+	}
+}

goTool/testrunner/tests.go

@@ -0,0 +1,21 @@
+package testrunner
+
+import (
+	"fmt"
+	"time"
+
+	"alox.tool/api"
+)
+
+func (tr *TestRunner) RunVersionTest() error {
+	fmt.Println("Starte Version Test...")
+
+	// Sende VersionRequest (0x02), erwarte VersionResponse (0x02)
+	frame, err := tr.Expect(api.CmdVersion, nil, api.CmdVersion, 1*time.Second)
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("Test bestanden! Hardware Version ist: %s\n", string(frame.Data))
+	return nil
+}

goTool/uart/com.go

@@ -0,0 +1,101 @@
+package uart
+
+import (
+	"context"
+	"log"
+	"time"
+
+	"alox.tool/api"
+	"alox.tool/eventbus"
+	"go.bug.st/serial"
+)
+
+type Com struct {
+	bus    eventbus.EventBus
+	port   serial.Port
+	cancel context.CancelFunc
+}
+
+func Connect(bus eventbus.EventBus, portName string, baudrate int) (*Com, error) {
+	mode := &serial.Mode{BaudRate: baudrate}
+	port, err := serial.Open(portName, mode)
+	if err != nil {
+		return nil, err
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	drv := New(bus)
+
+	go func() {
+		buff := make([]byte, 1024)
+		for {
+			select {
+			case <-ctx.Done():
+				return
+			default:
+				n, err := port.Read(buff)
+				if err != nil {
+					log.Print("Read Error:", err)
+					return // Loop beenden bei Hardware-Fehler
+				}
+				if n > 0 {
+					for _, b := range buff[:n] {
+						log.Printf("[RAW][RX] % X", b)
+						drv.ParseByte(b)
+					}
+				}
+			}
+		}
+	}()
+
+	return &Com{
+		bus:    bus,
+		port:   port,
+		cancel: cancel,
+	}, nil
+}
+
+func (c *Com) Close() {
+	c.cancel()
+	c.port.Close()
+}
+
+func packFrame(id byte, payload []byte) []byte {
+	out := make([]byte, 0, len(payload)+5) // Guessing extra Puffer size
+	checksum := id
+
+	out = append(out, StartByte)
+
+	// Helper für Escaping
+	writeEscaped := func(b byte) {
+		if b == StartByte || b == EscapeByte || b == EndByte {
+			out = append(out, EscapeByte)
+		}
+		out = append(out, b)
+	}
+
+	writeEscaped(id)
+	for _, b := range payload {
+		writeEscaped(b)
+		checksum ^= b
+	}
+
+	writeEscaped(checksum)
+	out = append(out, EndByte)
+	return out
+}
+
+func (c *Com) Send(id byte, payload []byte) error {
+	raw := packFrame(id, payload)
+
+	log.Printf("RAW: % X", raw)
+	_, err := c.port.Write(raw)
+
+	c.bus.Publish(api.TopicUARTTx, api.Frame{
+		Time: uint64(time.Now().UnixNano()),
+		ID:   id,
+		Data: payload,
+	})
+
+	return err
+}

goTool/uart/commands.go

@@ -0,0 +1,109 @@
+package uart
+
+import (
+	"encoding/binary"
+	"fmt"
+	"log"
+	"math"
+
+	"alox.tool/api"
+)
+
+func ParseFrameVersion(frame api.Frame) (api.PayloadVersion, error) {
+	if len(frame.Data) != 10 {
+		return api.PayloadVersion{}, fmt.Errorf("payload wrong size: got %d bytes, want 10", len(frame.Data))
+	}
+
+	v := api.PayloadVersion{
+		Version:   binary.LittleEndian.Uint16(frame.Data[0:2]),
+		Buildhash: [7]uint8(frame.Data[2:10])}
+	return v, nil
+}
+
+func parseFrameClientInfoPart(data []byte) (api.PayloadClientInfo, error) {
+	if len(data) != 19 {
+		return api.PayloadClientInfo{}, fmt.Errorf("payload wrong size: got %d bytes, want 19", len(data))
+	}
+
+	v := api.PayloadClientInfo{
+		ClientID:           data[0],
+		IsAvailable:        data[1],
+		SlotIsUsed:         data[2],
+		MACAddr:            [6]uint8(data[3:9]),
+		LastPing:           binary.LittleEndian.Uint32(data[9:13]),
+		LastSuccessfulPing: binary.LittleEndian.Uint32(data[13:17]),
+		Version:            binary.LittleEndian.Uint16(data[17:19]),
+	}
+
+	return v, nil
+}
+
+func ParseFrameClientInfo(frame api.Frame) ([]api.PayloadClientInfo, error) {
+	if len(frame.Data) == 0 {
+		return nil, fmt.Errorf("empty frame data")
+	}
+
+	clientCount := int(frame.Data[0])
+
+	log.Printf("Clients %d", clientCount)
+
+	expectedLen := 1 + (clientCount * 19)
+
+	if len(frame.Data) < expectedLen {
+		return nil, fmt.Errorf("frame data too short: got %d, want %d", len(frame.Data), expectedLen)
+	}
+
+	clientList := make([]api.PayloadClientInfo, 0, clientCount)
+
+	for i := 0; i < clientCount; i++ {
+		start := 1 + (i * 19)
+		end := start + 19
+
+		client, err := parseFrameClientInfoPart(frame.Data[start:end])
+		if err != nil {
+			log.Printf("Could not parse client part %d: %v", i, err)
+			continue
+		}
+		clientList = append(clientList, client)
+	}
+
+	return clientList, nil
+}
+
+func parse_uart_client_input(payloadBuffer []byte, payload_len int) {
+
+	clientCount := payloadBuffer[1]
+	fmt.Printf("Client Count %d\n", clientCount)
+	clientInputLen := 13
+
+	for i := 0; i < int(clientCount); i++ {
+		offset := 2 + (i * clientInputLen)
+
+		// --- Client ID (uint8) ---
+		clientID := payloadBuffer[offset]
+		offset += 1
+
+		fmt.Printf("Client: %d\n", clientID)
+
+		// --- Lage X (float32) ---
+		xBits := binary.LittleEndian.Uint32(payloadBuffer[offset : offset+4])
+		lageX := math.Float32frombits(xBits)
+		offset += 4
+
+		fmt.Printf("\tLAGE_X: %f\n", lageX)
+
+		// --- Lage Y (float32) ---
+		yBits := binary.LittleEndian.Uint32(payloadBuffer[offset : offset+4])
+		lageY := math.Float32frombits(yBits)
+		offset += 4
+
+		fmt.Printf("\tLAGE_Y: %f\n", lageY)
+
+		// --- Bitmask (int32) ---
+		maskBits := binary.LittleEndian.Uint32(payloadBuffer[offset : offset+4])
+		bitmask := uint32(maskBits)
+		offset += 4
+
+		fmt.Printf("\tBITMASK: %032b\n", bitmask)
+	}
+}

goTool/uart/parser.go

@@ -0,0 +1,128 @@
+package uart
+
+import (
+	"fmt"
+	"time"
+
+	"alox.tool/api"
+	"alox.tool/eventbus"
+)
+
+const (
+	StartByte  = 0xAA
+	EscapeByte = 0xBB
+	EndByte    = 0xCC
+)
+
+type parserState int
+
+const (
+	stateWaitingForStart parserState = iota
+	stateGetID
+	stateEscapedID
+	stateInPayload
+	stateEscapedPayload
+)
+
+type Parser struct {
+	bus        eventbus.EventBus
+	state      parserState
+	parsedData []byte
+	rawCapture []byte
+	checksum   byte
+}
+
+func New(bus eventbus.EventBus) *Parser {
+	return &Parser{
+		bus:        bus,
+		state:      stateWaitingForStart,
+		parsedData: make([]byte, 0, 1024*4),
+		rawCapture: make([]byte, 0, 1024*4),
+	}
+}
+
+func (p *Parser) reset() {
+	p.state = stateWaitingForStart
+	p.parsedData = p.parsedData[:0]
+	p.rawCapture = p.rawCapture[:0]
+	p.checksum = 0
+}
+
+func (p *Parser) pushError(reason string) {
+	// Throw Error on the Bus befor resetting
+	p.bus.Publish(api.TopicUARTError, fmt.Errorf("%s: %02X", reason, p.rawCapture))
+	p.reset()
+}
+
+func (p *Parser) emitFrame() {
+	if len(p.parsedData) == 0 {
+		p.reset()
+		return
+	}
+
+	// Copy Data for Message Frame
+	dataCopy := make([]byte, len(p.parsedData)-1) // Exclude ID
+	copy(dataCopy, p.parsedData[1:])
+
+	f := api.Frame{
+		Time: uint64(time.Now().UnixNano()),
+		ID:   p.parsedData[0],
+		Data: dataCopy,
+	}
+
+	p.bus.Publish(api.TopicUARTRx, f)
+	p.reset()
+}
+
+func (p *Parser) addByte(b byte) {
+	p.parsedData = append(p.parsedData, b)
+	p.checksum ^= b
+}
+
+func (p *Parser) ParseByte(b byte) {
+	p.rawCapture = append(p.rawCapture, b)
+
+	switch p.state {
+	case stateWaitingForStart:
+		if b == StartByte {
+			p.reset()
+			p.rawCapture = append(p.rawCapture, b) // Start Byte behalten
+			p.state = stateGetID
+		}
+
+	case stateGetID:
+		if b == EscapeByte {
+			p.state = stateEscapedID
+		} else {
+			p.addByte(b)
+			p.state = stateInPayload
+		}
+
+	case stateEscapedID:
+		p.addByte(b)
+		p.state = stateInPayload
+
+	case stateInPayload:
+		if b == EscapeByte {
+			p.state = stateEscapedPayload
+			return
+		}
+		if b == StartByte {
+			p.pushError("unexpected start byte")
+			return
+		}
+		if b == EndByte {
+			if p.checksum != 0 {
+				p.pushError("checksum mismatch")
+				return
+			}
+			p.emitFrame()
+			return
+		}
+		p.addByte(b)
+
+	case stateEscapedPayload:
+		p.addByte(b)
+		p.state = stateInPayload
+	}
+}