public byte CheckValue(byte[] btAryData)
{
UHFMessageTran msgTran = new UHFMessageTran();
return(msgTran.CheckSum(btAryData, 0, btAryData.Length));
}
private void RunReceiveDataCallback(byte[] btAryReceiveData)
{
try
{
if (ReceiveCallback != null)
{
ReceiveCallback(btAryReceiveData);
}
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);
UHFMessageTran msgTran = new UHFMessageTran(btAryAnaly);
if (AnalyCallback != null)
{
AnalyCallback(msgTran);
}
nLoop += 1 + nLen;
nIndex = nLoop + 1;
}
else
{
nLoop += 1 + nLen;
}
}
else
{
nMarkIndex = nLoop;
}
}
}
if (nIndex < nMarkIndex)
{
nIndex = nMarkIndex + 1;
}
//larry 2017/4/12 strange here, should test here
if (nIndex < btAryBuffer.Length)
{
m_nLenth = btAryBuffer.Length - nIndex;
Array.Clear(m_btAryBuffer, 0, 4096);
Array.Copy(btAryBuffer, nIndex, m_btAryBuffer, 0, btAryBuffer.Length - nIndex);
}
else
{
m_nLenth = 0;
}
}
catch (System.Exception ex)
{
}
}
private int SendMessage(byte btReadId, byte btCmd, byte[] btAryData)
{
UHFMessageTran msgTran = new UHFMessageTran(btReadId, btCmd, btAryData);
return(SendMessage(msgTran.AryTranData));
}