Yes, im having the exact same problem with USB to serial adapters on linux.
Sends ok but receives garbage...
Any clues?
2010/5/19 Jan Kåre Vatne <[email protected]>
>
> The synaser code fails when reading from an IgotU GPS, which uses
> a virtual serial port.
>
> Reading short messages works OK, but reading 4096 bytes fails,
> returning only a few hundred bytes - even with long time-outs.
>
> The problem is that the routine CanEvent() returns with the wrong event
> code.
> It should return EV_RXCHAR, but it returns 0, even if there are characters
> in the windows internal buffer.
>
> Line 1747 in synaser.pas evaluates to false:
>
> Result := (ex and Event) = Event;
>
> This leads the program to believe there was a time-out, while in reality
> there are more data in the buffer.
>
> A fix that seems to work is to change line 1791 to:
>
> Result := CanEvent(EV_RXCHAR, Timeout) or (WaitingData>0);
>
>
> Has anybody any experience with this problem?
>
>
>
> Jan Kåre Vatne
>
>
>
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>
>
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>
--
German Pablo Gentile
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