fix: 修改hex流发送逻辑

internal/tcp/sensor.go

@@ -2,8 +2,10 @@ package tcp
 
 import (
 	"encoding/binary"
+	"encoding/hex"
 	"fmt"
 	"net"
+	"strings"
 	"sync"
 	"time"
 
@@ -13,9 +15,9 @@ import (
 )
 
 const (
-	queryCmd = "01 03 01 F4 00 10 04 08" // 读取寄存器命令
-	resetCmd = "01 06 60 02 00 5A B6 31" // 清除雨量统计命令
-	tcpPort  = ":10004"                  // TCP服务器端口
+	queryCmd = "010301F400100408" // 读取寄存器命令
+	resetCmd = "0106600200005AB6" // 清除雨量统计命令
+	tcpPort  = ":10004"           // TCP服务器端口
 )
 
 type SensorComm struct {
@@ -39,8 +41,13 @@ func (s *SensorComm) sendQuery() error {
 	s.mu.Lock()
 	defer s.mu.Unlock()
 
-	cmd := hexStringToBytes(queryCmd)
-	_, err := s.conn.Write(cmd)
+	cmd, err := hex.DecodeString(queryCmd)
+	if err != nil {
+		logger.Logger.Printf("解析命令失败: %v", err)
+		return err
+	}
+
+	_, err = s.conn.Write(cmd)
 	if err != nil {
 		logger.Logger.Printf("发送查询命令失败: %v", err)
 		return err
@@ -173,24 +180,30 @@ func handleConnection(sensor *SensorComm) {
 
 // 辅助函数：将十六进制字符串转换为字节数组
 func hexStringToBytes(s string) []byte {
-	var bytes []byte
-	var b byte
-	var ok bool
+	// 移除空格
+	s = strings.ReplaceAll(s, " ", "")
 
-	for i := 0; i < len(s); i++ {
-		if s[i] == ' ' {
-			continue
+	// 确保字符串长度是偶数
+	if len(s)%2 != 0 {
+		return nil
+	}
+
+	bytes := make([]byte, len(s)/2)
+	for i := 0; i < len(s); i += 2 {
+		// 转换高位
+		high, ok := hexCharToByte(s[i])
+		if !ok {
+			return nil
 		}
 
-		if b, ok = hexCharToByte(s[i]); !ok {
-			continue
+		// 转换低位
+		low, ok := hexCharToByte(s[i+1])
+		if !ok {
+			return nil
 		}
 
-		if i%2 == 0 {
-			bytes = append(bytes, b<<4)
-		} else {
-			bytes[len(bytes)-1] |= b
-		}
+		// 组合高位和低位
+		bytes[i/2] = high<<4 | low
 	}
 
 	return bytes