Re: Problem reading from COM1

["Arash Partow" <arashp at hotmail dot com>]

Hi,

Cygwin provides a posix layer for interfacing with i/o devices,
looking at this line you have written:

> $ stty -F /dev/com1

You need some more info about how serial i/o ports are described
in a posix system, this page is a good resource:

http://www.easysw.com/~mike/serial/serial.html


Regards


Arash



> Problem reading from COM1
>
> Hello,
>
> I have installed Cygwin on a windows98 computer.
> I have a problem using the serial port. (COM1)
> It is possible to write to COM1 but impossible to read from.
>
> ls >com1
> data is send and received
>
> cat< com1
> nothing is received.
>
> I did several tests with different programs.
> But nothing is received. (under cygwin)
> A normal HyperTerminal on windows did work.
> The stty command have the following settings.
>
>
> $ stty -F /dev/com1
> speed 9600 baud; line = 0;
> intr = <undef>; quit = <undef>; erase = <undef>; kill = <undef>; eof =
> <undef>;
> susp = <undef>; rprnt = <undef>; werase = <undef>; lnext = <undef>;
> flush = <undef>; min = 0; time = 0;
> -cread
> -brkint -icrnl -imaxbel
> -opost -onlcr
> -isig -icanon -iexten -echo -echoe -echok -echoctl -echoke
>
> $ stty -F /dev/com1 cread
> stty: /dev/com1: unable to perform all requested operations
>
> Why Can?t I read from the COM1?
> Is it because I use windows 98?
> Why can?t stty set cread?
>
> Thanks Robert Bon

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