/// <summary>
/// 读取数据
/// </summary>
/// <returns></returns>
public List <string> ReadTrayRfid(string strPort, int nBaudrate, out string errString)
{
errString = string.Empty;
try
{
int nType = this.OpenCom(strPort, nBaudrate, out errString);
if (nType == 0)
{
DateTime now = DateTime.Now;
byte btReadId = 0xFF;
byte btCmd = 0xb0;
listRfid = new List <string>();
MessageTran msgTran = new MessageTran(btReadId, btCmd);
iSerialPort.Write(msgTran.AryTranData, 0, msgTran.AryTranData.Length);//给串口发送盘存命令
//读取到数据就返回信息
do
{
Thread.Sleep(300);
int nCount = iSerialPort.BytesToRead;
if (nCount == 0)
{
return(listRfid);
}
byte[] btAryBuffer = new byte[nCount];
int nRead = iSerialPort.Read(btAryBuffer, 0, nCount); //读取串口缓存区数据
RunReceiveDataCallback(btAryBuffer);
if (((TimeSpan)(DateTime.Now - now)).TotalSeconds < 5) //5秒后无数据就返回
{
break;
}
} while (listRfid.Count == 0 || listRfid == null);//如果集合没有数据就继续运行
}
this.CloseCom();
return(listRfid);
}
catch (Exception e)
{
errString += e.Message;
throw new Exception("操作串口错误：" + errString);
}
}
/// <summary>
/// 读取数据
/// </summary>
/// <returns></returns>
public List<string> ReadTrayRfid(string strPort, int nBaudrate,out string errString)
{
errString = string.Empty;
try
{
int nType = this.OpenCom(strPort, nBaudrate, out errString);
if (nType == 0)
{
DateTime now = DateTime.Now;
byte btReadId = 0xFF;
byte btCmd = 0xb0;
listRfid = new List<string>();
MessageTran msgTran = new MessageTran(btReadId, btCmd);
iSerialPort.Write(msgTran.AryTranData, 0, msgTran.AryTranData.Length);//给串口发送盘存命令
//读取到数据就返回信息
do
{
Thread.Sleep(300);
int nCount = iSerialPort.BytesToRead;
if (nCount == 0)
{
return listRfid;
}
byte[] btAryBuffer = new byte[nCount];
int nRead = iSerialPort.Read(btAryBuffer, 0, nCount);//读取串口缓存区数据
RunReceiveDataCallback(btAryBuffer);
if (((TimeSpan)(DateTime.Now - now)).TotalSeconds < 5)//5秒后无数据就返回
{
break;
}
} while (listRfid.Count == 0 || listRfid == null);//如果集合没有数据就继续运行
}
this.CloseCom();
return listRfid;
}
catch (Exception e)
{
errString += e.Message;
throw new Exception("操作串口错误：" + errString);
}
}
private void RunReceiveDataCallback(byte[] btAryReceiveData)
{
try
{
int nCount = btAryReceiveData.Length;
byte[] btAryBuffer = new byte[nCount + m_nLenth];
Array.Copy(m_btAryBuffer, btAryBuffer, m_nLenth);
Array.Copy(btAryReceiveData, 0, btAryBuffer, m_nLenth, btAryReceiveData.Length);
//分析接收数据，以0xA0为数据起点，以协议中数据长度为数据终止点
int nIndex = 0; //当数据中存在A0时，记录数据的终止点
int nMarkIndex = 0; //当数据中不存在A0时，nMarkIndex等于数据组最大索引
for (int nLoop = 0; nLoop < btAryBuffer.Length; nLoop++)
{
if (btAryBuffer.Length > nLoop + 1)
{
if (btAryBuffer[nLoop] == 0xA0)
{
int nLen = Convert.ToInt32(btAryBuffer[nLoop + 1]);
if (nLoop + 1 + nLen < btAryBuffer.Length)
{
byte[] btAryAnaly = new byte[nLen + 2];
Array.Copy(btAryBuffer, nLoop, btAryAnaly, 0, nLen + 2);
MessageTran msgTran = new MessageTran(btAryAnaly);
if (msgTran.AryData.Length == 9)
{
string strUID = CCommondMethod.ByteArrayToString(msgTran.AryData, 1, 8); //rfid数据
bool isUID = listRfid.Contains(strUID); //判断集合里面是否有这个rfid数据
if (isUID == false)
{
listRfid.Add(strUID);
}
}
nLoop += 1 + nLen;
nIndex = nLoop + 1;
}
else
{
nLoop += 1 + nLen;
}
}
else
{
nMarkIndex = nLoop;
}
}
}
if (nIndex < nMarkIndex)
{
nIndex = nMarkIndex + 1;
}
if (nIndex < btAryBuffer.Length)
{
m_nLenth = btAryBuffer.Length - nIndex;
Array.Copy(btAryBuffer, nIndex, m_btAryBuffer, 0, btAryBuffer.Length - nIndex);
}
else
{
m_nLenth = 0;
}
}
catch (System.Exception ex)
{
throw new Exception("读取数据出错了:" + ex.Message);
}
}
private void RunReceiveDataCallback(byte[] btAryReceiveData)
{
try
{
int nCount = btAryReceiveData.Length;
byte[] btAryBuffer = new byte[nCount + m_nLenth];
Array.Copy(m_btAryBuffer, btAryBuffer, m_nLenth);
Array.Copy(btAryReceiveData, 0, btAryBuffer, m_nLenth, btAryReceiveData.Length);
//分析接收数据，以0xA0为数据起点，以协议中数据长度为数据终止点
int nIndex = 0;//当数据中存在A0时，记录数据的终止点
int nMarkIndex = 0;//当数据中不存在A0时，nMarkIndex等于数据组最大索引
for (int nLoop = 0; nLoop < btAryBuffer.Length; nLoop++)
{
if (btAryBuffer.Length > nLoop + 1)
{
if (btAryBuffer[nLoop] == 0xA0)
{
int nLen = Convert.ToInt32(btAryBuffer[nLoop + 1]);
if (nLoop + 1 + nLen < btAryBuffer.Length)
{
byte[] btAryAnaly = new byte[nLen + 2];
Array.Copy(btAryBuffer, nLoop, btAryAnaly, 0, nLen + 2);
MessageTran msgTran = new MessageTran(btAryAnaly);
if (msgTran.AryData.Length == 9)
{
string strUID = CCommondMethod.ByteArrayToString(msgTran.AryData, 1, 8);//rfid数据
bool isUID = listRfid.Contains(strUID);//判断集合里面是否有这个rfid数据
if (isUID == false)
{
listRfid.Add(strUID);
}
}
nLoop += 1 + nLen;
nIndex = nLoop + 1;
}
else
{
nLoop += 1 + nLen;
}
}
else
{
nMarkIndex = nLoop;
}
}
}
if (nIndex < nMarkIndex)
{
nIndex = nMarkIndex + 1;
}
if (nIndex < btAryBuffer.Length)
{
m_nLenth = btAryBuffer.Length - nIndex;
Array.Copy(btAryBuffer, nIndex, m_btAryBuffer, 0, btAryBuffer.Length - nIndex);
}
else
{
m_nLenth = 0;
}
}
catch (System.Exception ex)
{
throw new Exception("读取数据出错了:" + ex.Message);
}
}