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From:	"Campbell" <cf AT cannex DOT com DOT au>
To:	<cygwin AT cygwin DOT com>
Subject:	stty on serial ports
Date:	Sun, 18 May 2003 10:54:05 +1000
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Having trouble with stty.

On w2k appears to correctly change speed, but complains. Unable to read
settings. ixon & inpck have no effect.

$ stty -F /dev/ttyS0 speed 4800 ixon inpck
0
stty: /dev/ttyS0: unable to perform all requested operations

$ stty -F /dev/ttyS0
speed 0 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

$ cmd /c mode com1

Status for device COM1:
-----------------------
    Baud:            4800
    Parity:          None
    Data Bits:       8
    Stop Bits:       1
    Timeout:         OFF
    XON/XOFF:        OFF
    CTS handshaking: OFF
    DSR handshaking: OFF
    DSR sensitivity: OFF
    DTR circuit:     ON
    RTS circuit:     ON

On w95, the results are similar, except that it seems to remember the
previous stty speed setting.
$ stty -F /dev/ttyS0 speed 4800 ixon inpck
1200 <---previously set with stty. Not the same as speed set using MODE.
stty: /dev/ttyS0: unable to perform all requested operations

Does this mean that the functionality relied upon by stty is not yet
implemented in cygwin1.dll ?

Campbell.


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