129 lines
2.8 KiB
Go
129 lines
2.8 KiB
Go
package main
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import (
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"encoding/hex"
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"net"
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"time"
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)
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// 传感器通信相关结构和函数
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type SensorComm struct {
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conn net.Conn
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address string
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lastQueryTime time.Time
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lastResetTime time.Time
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querySuccess bool
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responseRecv chan bool
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queryCmd []byte
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resetCmd []byte
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}
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// 创建新的传感器通信实例
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func newSensorComm(conn net.Conn) *SensorComm {
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sc := &SensorComm{
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conn: conn,
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address: conn.RemoteAddr().String(),
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lastQueryTime: time.Time{},
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lastResetTime: time.Time{},
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querySuccess: false,
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responseRecv: make(chan bool, 1), // 带缓冲的通道，避免阻塞
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queryCmd: prepareQueryCommand(),
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resetCmd: prepareResetCommand(),
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}
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return sc
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}
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// 准备查询命令
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func prepareQueryCommand() []byte {
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queryHexData := "01 03 01 F4 00 10 04 08"
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queryHexData = removeSpaces(queryHexData)
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queryData, err := hex.DecodeString(queryHexData)
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if err != nil {
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logger.Printf("解析查询命令错误: %v", err)
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return nil
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}
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return queryData
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}
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// 准备重置命令
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func prepareResetCommand() []byte {
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resetHexData := "01 06 60 02 00 5A B6 31"
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resetHexData = removeSpaces(resetHexData)
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resetData, err := hex.DecodeString(resetHexData)
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if err != nil {
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logger.Printf("解析重置命令错误: %v", err)
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return nil
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}
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return resetData
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}
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// 发送查询命令
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func (sc *SensorComm) sendQuery() bool {
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sc.querySuccess = false
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_, err := sc.conn.Write(sc.queryCmd)
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if err != nil {
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logger.Printf("发送查询命令错误: %v", err)
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return false
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}
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sc.lastQueryTime = time.Now()
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logger.Printf("发送查询命令: %s", time.Now().Format("15:04:05"))
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return true
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}
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// 发送整点重置命令，在查询成功后执行
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func (sc *SensorComm) resetHourly() bool {
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// 检查是否在过去5分钟内已经重置过
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if time.Since(sc.lastResetTime) < 5*time.Minute {
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logger.Printf("最近5分钟内已重置过雨量，跳过本次重置")
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return false
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}
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// 直接发送重置命令
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_, err := sc.conn.Write(sc.resetCmd)
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if err != nil {
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logger.Printf("发送重置命令错误: %v", err)
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return false
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}
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logger.Printf("发送雨量重置命令: %s", time.Now().Format("15:04:05"))
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sc.lastResetTime = time.Now()
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return true
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}
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// 处理接收到的数据
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func (sc *SensorComm) handleData(data []byte) *SensorData {
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sensorData := parseData(data)
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if sensorData != nil {
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sc.querySuccess = true
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// 通知已收到响应
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select {
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case sc.responseRecv <- true:
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default:
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// 通道已满或无接收者，这里不阻塞
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}
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return sensorData
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}
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return nil
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}
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// 关闭连接
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func (sc *SensorComm) close() {
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if sc.conn != nil {
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sc.conn.Close()
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}
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close(sc.responseRecv)
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}
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// 移除字符串中的空格
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func removeSpaces(s string) string {
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var result []rune
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for _, r := range s {
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if r != ' ' {
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result = append(result, r)
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}
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}
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return string(result)
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}
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