private byte bufcnt; //data buffer count
public FrameBuffer()
{
flag = RF_STATE.RF_IDLE;
data = new byte[32];
bufcnt = 0;
}
public void pushc(byte c)
{
if (flag == RF_STATE.RF_CKSUM)
{
throw new Exception("unexpected incoming char before last frame is handled.");
}
if (flag == RF_STATE.RF_DATABUF)
{
if (c == get_cksum())
{
flag = RF_STATE.RF_CKSUM; //means we are handling command
return;
}
}
if (flag == RF_STATE.RF_DATALEN)
{
try
{
data[bufcnt] = c;
}
catch
{
MessageBox.Show("so weird " + bufcnt.ToString() + ">" + data.Length);
}
bufcnt++;
if (datalen <= bufcnt)
{
flag = RF_STATE.RF_DATABUF;
}
return;
}
if (flag == RF_STATE.RF_CMD)
{
if ((c > 0) && (c < data.Length)) //valid frame
{
bufcnt = 0;
datalen = c;
flag = RF_STATE.RF_DATALEN;
}
else
{
flag = RF_STATE.RF_IDLE;
}
return;
}
if (flag == RF_STATE.RF_ADDRTO)
{
cmd = c;
flag = RF_STATE.RF_CMD;
return;
}
if (flag == RF_STATE.RF_ADDRFROM)
{
if (c == 0x00) //send to pc node
{
flag = RF_STATE.RF_ADDRTO;
}
return;
}
if (flag == RF_STATE.RF_HEAD2)
{
addr = c;
flag = RF_STATE.RF_ADDRFROM;
return;
}
if (flag == RF_STATE.RF_HEAD1)
{
if (c == 0x68)
{
flag = RF_STATE.RF_HEAD2;
return;
}
}
if (flag == RF_STATE.RF_IDLE)
{
if (c == 0xfe)
{
flag = RF_STATE.RF_HEAD1;
return;
}
}
flag = RF_STATE.RF_IDLE;
}
public void ResetFlag()
{
flag = RF_STATE.RF_IDLE;
}
public void ResetFlag()
{
flag = RF_STATE.RF_IDLE;
}
private byte bufcnt; //data buffer count
public FrameBuffer()
{
flag = RF_STATE.RF_IDLE;
data = new byte[32];
bufcnt = 0;
}
public void pushc(byte c)
{
if (flag == RF_STATE.RF_CKSUM)
{
throw new Exception("unexpected incoming char before last frame is handled.");
}
if (flag == RF_STATE.RF_DATABUF)
{
if (c == get_cksum())
{
flag = RF_STATE.RF_CKSUM; //means we are handling command
return;
}
}
if (flag == RF_STATE.RF_DATALEN)
{
try
{
data[bufcnt] = c;
}
catch
{
Program.MsgShow("so weird " + bufcnt.ToString() + ">" + data.Length);
}
bufcnt++;
if (datalen <= bufcnt)
{
flag = RF_STATE.RF_DATABUF;
}
return;
}
if (flag == RF_STATE.RF_CMD)
{
if ((c > 0) && (c < data.Length)) //valid frame
{
bufcnt = 0;
datalen = c;
flag = RF_STATE.RF_DATALEN;
}
else
{
flag = RF_STATE.RF_IDLE;
}
return;
}
if (flag == RF_STATE.RF_ADDRTO)
{
cmd = c;
flag = RF_STATE.RF_CMD;
return;
}
if (flag == RF_STATE.RF_ADDRFROM)
{
if (c == 0x00) //send to pc node
{
flag = RF_STATE.RF_ADDRTO;
}
return;
}
if (flag == RF_STATE.RF_HEAD2)
{
addr = c;
flag = RF_STATE.RF_ADDRFROM;
return;
}
if (flag == RF_STATE.RF_HEAD1)
{
if (c == 0x68)
{
flag = RF_STATE.RF_HEAD2;
return;
}
}
if (flag == RF_STATE.RF_IDLE)
{
if (c == 0xfe)
{
flag = RF_STATE.RF_HEAD1;
return;
}
}
flag = RF_STATE.RF_IDLE;
}
