实现 LoRaMeshUartPassthroughTransport 构造函数

internal/infra/transport/lora/lora_mesh_uart_passthrough_transport.go

@@ -1,19 +1,44 @@
 package lora
 
 import (
+	"fmt"
+	"sync"
+	"time"
+
 	"git.huangwc.com/pig/pig-farm-controller/internal/infra/config"
 	"git.huangwc.com/pig/pig-farm-controller/internal/infra/logs"
 	"git.huangwc.com/pig/pig-farm-controller/internal/infra/transport"
+
+	"github.com/tarm/serial"
 )
 
 // LoRaMeshUartPassthroughTransport 实现 transport.Communicator 接口, 用于 LoRa 网状网络 UART 透传
 type LoRaMeshUartPassthroughTransport struct {
-	// 在这里添加必要的字段
+	config config.LoraMeshConfig
+	logger *logs.Logger
+	mu     sync.Mutex // 保护对 LoRa 模块的并发访问
+	port   *serial.Port
 }
 
 // NewLoRaMeshUartPassthroughTransport 创建一个新的 LoRaMeshUartPassthroughTransport
-func NewLoRaMeshUartPassthroughTransport(config config.LoraMeshConfig, logger *logs.Logger) *LoRaMeshUartPassthroughTransport {
-	return &LoRaMeshUartPassthroughTransport{}
+func NewLoRaMeshUartPassthroughTransport(config config.LoraMeshConfig, logger *logs.Logger) (*LoRaMeshUartPassthroughTransport, error) {
+	c := &serial.Config{
+		Name:        config.UARTPort,
+		Baud:        config.BaudRate,
+		ReadTimeout: time.Second * time.Duration(config.Timeout),
+	}
+
+	port, err := serial.OpenPort(c)
+	if err != nil {
+		return nil, fmt.Errorf("无法打开串口 %s: %w", config.UARTPort, err)
+	}
+
+	return &LoRaMeshUartPassthroughTransport{
+		config: config,
+		logger: logger,
+		mu:     sync.Mutex{},
+		port:   port,
+	}, nil
 }
 
 // Send 将数据发送到指定的地址