/// <summary>
/// HDLC层接收数据
/// </summary>
/// <param name="b">字节数据</param>
private void InputWrite(byte b)
{
try
{
if (b == HDLC_ESCAPE)
{
m_bInputEscaping = true;
}
else
{
if (m_bInputEscaping == true)
{
// Kous: 注意一下转化时候按思路执行的
b = (byte)(b ^ HDLC_ESCAPE_MASK);
m_bInputEscaping = false;
}
// add byte to input buffer
m_u8aInputBuf[m_u8InputBufFill] = b;
m_u8InputBufFill++;
// iterate through CRC calculator
m_u16InputCrc = FCS.Fcs16CalcByte(m_u16InputCrc, b);
}
}
catch (Exception ex)
{
CommStackLog.RecordErr(enLogLayer.eHdlc, "InputBuf(" + m_u8InputBufFill + ") " + ex.ToString());
}
}
/// <summary>
/// HDLC层发送数据
/// </summary>
/// <param name="b"></param>
public void OutputWrite(byte b)
{
m_u8aOutputPacketBuf[m_u8OutputPacketFill++] = b;
m_u16OutputCrc = FCS.Fcs16CalcByte(m_u16OutputCrc, b);
// write optional escape byte
if (b == HDLC_FLAG || b == HDLC_ESCAPE)
{
m_u8aOutputBuf[m_u8OutputBufFill++] = HDLC_ESCAPE;
b = (byte)(b ^ HDLC_ESCAPE_MASK);
}
// data byte
m_u8aOutputBuf[m_u8OutputBufFill++] = b;
}