public bool frameDecoder(byte b)
{
switch (state)
{
case frameState.S_READY:
if (b == STARTCHAR)
{
state = frameState.S_SYNC;
}
else
{
state = frameState.S_READY;
}
break;
case frameState.S_SYNC:
if (b == thisaddr)
{
state = frameState.S_IDENT;
}
else
{
state = frameState.S_READY;
}
break;
case frameState.S_IDENT:
length = b;
checksum = 0;
decode = "";
if (length != 0)
{
state = frameState.S_READ;
}
else
{
state = frameState.S_READY;
}
break;
case frameState.S_READ:
checksum ^= b;
decode += (char)b;
if (--length == 0)
{
state = frameState.S_CHECK;
}
else
{
state = frameState.S_READ;
}
break;
case frameState.S_CHECK:
state = frameState.S_READY;
if (checksum == b)
{
return(true);
}
break;
}
return(false);
}
public frameDecode(byte address)
{
state = frameState.S_READY;
thisaddr = address;
}
