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Re: Problem reading from COM1


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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