/// <summary>
/// 读取环境湿度
/// </summary>
/// <param name="Address">站号</param>
/// <param name="Humidity">返回环境湿度</param>
/// <returns>读取成功或失败</returns>
public static bool GetHumidity(int Address, ref float Humidity)
{
string SendString = Auxiliary.NumToHex(Address, 1) + Auxiliary.NumToHex(4, 1) + Auxiliary.NumToHex(1001, 2) + Auxiliary.NumToHex(1, 2);
byte[] SendData = Auxiliary.CheckCRC(SendString);
byte[] ReturnData = WriteData(SendData, 100);
if (ReturnData == null)
{
for (int i = 0; i < HTU21D_Channel.Length; i++)
{
if (HTU21D_Channel[i].Station == Address)
{
HTU21D_Channel[i].IsConnect = false;
}
}
return(false);
}
else
{
Humidity = Auxiliary.HexToNum(ReturnData[3].ToString("X2") + ReturnData[4].ToString("X2")) / 100f;
for (int i = 0; i < HTU21D_Channel.Length; i++)
{
if (HTU21D_Channel[i].Station == Address)
{
HTU21D_Channel[i].IsConnect = true;
}
}
return(true);
}
}
/// <summary>
/// 向串口写入数据
/// </summary>
/// <param name="SendData">需发送的数据</param>
/// <param name="TimeOut">超时</param>
/// <returns>返回Byte数组报文</returns>
private static byte[] WriteData(byte[] SendData, int TimeOut)
{
try
{
lock (LockValue)
{
byte[] GetBuffer;
Stopwatch TimeOutDelay = new Stopwatch();
if (AutoLoad == true || ExitRead == false)
{
if (SP.IsOpen == false)
{
SP.Open();
}
}
else
{
return(null);
}
if (SP.BytesToRead != 0)
{
SP.DiscardInBuffer();
}
SP.Write(SendData, 0, SendData.Length);
int ReturnDatByte = ReadDataBit(SendData);
if (TimeOut != 0)
{
TimeOutDelay.Start();
}
do
{
Thread.Sleep(1);
}while (SP.BytesToRead != ReturnDatByte && TimeOutDelay.ElapsedMilliseconds <= TimeOut);
if (TimeOutDelay.ElapsedMilliseconds < TimeOut)
{
GetBuffer = new byte[SP.BytesToRead];
SP.Read(GetBuffer, 0, SP.BytesToRead);
if (Auxiliary.CheckCRC(GetBuffer))
{
return(GetBuffer);
}
else
{
return(null);
}
}
else
{
return(null);
}
}
}
catch
{
return(null);
}
}
private static string WriteData(string SendData, int TimeOut)
{
try
{
lock (LockValue)
{
string RetData = "";
byte[] GetBuffer;
Stopwatch TimeOutDelay = new Stopwatch();
if (SP.IsOpen == false)
{
SP.Open();
}
if (SP.BytesToRead != 0)
{
SP.DiscardInBuffer();
}
byte[] WriteData = Auxiliary.CheckCRC(SendData);
SP.Write(WriteData, 0, WriteData.Length);
int ReturnDatByte = ReadDataBit(WriteData);
if (TimeOut != 0)
{
TimeOutDelay.Start();
}
do
{
Thread.Sleep(1);
}while (SP.BytesToRead != ReturnDatByte && TimeOutDelay.ElapsedMilliseconds <= TimeOut);
if (TimeOutDelay.ElapsedMilliseconds < TimeOut)
{
GetBuffer = new byte[SP.BytesToRead];
SP.Read(GetBuffer, 0, SP.BytesToRead);
if (Auxiliary.CheckCRC(GetBuffer))
{
if (GetBuffer[1] == 04)
{
for (int i = 0; i < GetBuffer[2] / 2; i += 2)
{
RetData += Convert.ToInt32(GetBuffer[3 + i].ToString("X2") + GetBuffer[4 + i].ToString("X2"), 16).ToString() + "-";
}
}
}
}
else
{
RetData = null;
}
return(RetData);
}
}
catch
{
return(null);
}
}
/// <summary>
/// 测试连接可行性
/// </summary>
/// <returns></returns>
private static bool TestConnect(int Address)
{
string SendString = Auxiliary.NumToHex(Address, 1) + Auxiliary.NumToHex(4, 1) + Auxiliary.NumToHex(1000, 2) + Auxiliary.NumToHex(1, 2);
byte[] SendData = Auxiliary.CheckCRC(SendString);
byte[] ReturnData = WriteData(SendData, 100);
if (ReturnData == null)
{
return(false);
}
else
{
return(true);
}
}
private static bool Get(int Address, ref SUTOBody[] Body)
{
string SendString = Auxiliary.NumToHex(Address, 1) + Auxiliary.NumToHex(3, 1) + Auxiliary.NumToHex(0, 2) + Auxiliary.NumToHex(18, 2);
byte[] SendData = Auxiliary.CheckCRC(SendString);
byte[] ReturnData = WriteData(SendData, 250);
if (ReturnData == null)
{
_IsConnect = false;
return(false);
}
Body[Address - 1].Temperature = Auxiliary.HexToFloat(ReturnData[5].ToString("X2") + ReturnData[6].ToString("X2") + ReturnData[3].ToString("X2") + ReturnData[4].ToString("X2"));
Body[Address - 1].Humidity = Auxiliary.HexToFloat(ReturnData[9].ToString("X2") + ReturnData[10].ToString("X2") + ReturnData[7].ToString("X2") + ReturnData[8].ToString("X2"));
Body[Address - 1].Pressure = Auxiliary.HexToFloat(ReturnData[13].ToString("X2") + ReturnData[14].ToString("X2") + ReturnData[11].ToString("X2") + ReturnData[12].ToString("X2"));
Body[Address - 1].PressureDewPoint = Auxiliary.HexToFloat(ReturnData[17].ToString("X2") + ReturnData[18].ToString("X2") + ReturnData[15].ToString("X2") + ReturnData[16].ToString("X2"));
Body[Address - 1].DewPoint = Auxiliary.HexToFloat(ReturnData[21].ToString("X2") + ReturnData[22].ToString("X2") + ReturnData[19].ToString("X2") + ReturnData[20].ToString("X2"));
Body[Address - 1].MixingRatio = Auxiliary.HexToFloat(ReturnData[25].ToString("X2") + ReturnData[26].ToString("X2") + ReturnData[23].ToString("X2") + ReturnData[24].ToString("X2"));
Body[Address - 1].AtHumidity = Auxiliary.HexToFloat(ReturnData[29].ToString("X2") + ReturnData[30].ToString("X2") + ReturnData[27].ToString("X2") + ReturnData[28].ToString("X2"));
Body[Address - 1].AtAbsoluteHumidity = Auxiliary.HexToFloat(ReturnData[33].ToString("X2") + ReturnData[34].ToString("X2") + ReturnData[31].ToString("X2") + ReturnData[32].ToString("X2"));
Body[Address - 1].VolumeRatio = Auxiliary.HexToFloat(ReturnData[37].ToString("X2") + ReturnData[38].ToString("X2") + ReturnData[35].ToString("X2") + ReturnData[36].ToString("X2"));
_IsConnect = true;
return(true);
}
