Jürgen Hestermann schrieb:
function SerRead(Handle: TSerialHandle; var Buffer; Count: LongInt):
LongInt;
begin
Result := fpRead(Handle, Buffer, Count);
end;
i don't understand the declaration for "buffer" in the function
below, because no type is declared for "buffer".
I believe that the type is irrelevant, you can use whatever you want.
I think that it's just used by fpRead to buffer data. You only provide
the space for the buffer but you don't need to read it directly. It
seems that Count has to be the size of the buffer. But I am just
guessing....
My hope was to read more than guessing. As I pointed out, the "buffer"
seems not to be filled with incoming data from the selected serial port.
Hence I cannot read just this data, and serread seems to be faulty. For
this reason I ask for an advice. I need to look on working sample code
to use this function in a working manner. In my example, serread replies
only, what has been written with serwrite right before. Not even
serflush, executed right after serwrite, can solve this problem to me.
Holger
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