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Full Discussion: minicom works, but stty does not
Top Forums Shell Programming and Scripting minicom works, but stty does not Post 302575369 by pa-trick on Monday 21st of November 2011 11:56:49 AM
Old 11-21-2011
minicom works, but stty does not
Hi all,

I have some trouble getting stty to talk to some serial/usb converter.
Getting minicom to work was however quite simple after I entered the following settings in addition to its standard-setup:

Code:
pu port             /dev/ttyUSB0
pu baudrate         19200
pu bits             8
pu parity           N
pu stopbits         1
pu rtscts           No

I tried to reproduce these settings for stty:

Code:
stty 19200 cs8 -raw -parenb -cstopb crtscts -echo -F /dev/ttyUSB0

But this does not seem to work. Because
Code:
echo "my_serial_command" /dev/ttyUSB0

does not produce any output to
Code:
cat < /dev/ttyUSB0

.

I would appreciate if anybody of you would be willing to look in the full settings of stty in order to tell me if there's maybe some other flag or option set wrong:

Code:
speed 19200 baud; rows 0; columns 0; line = 0;
intr = ^C; quit = ^\; erase = ^?; kill = ^H; eof = ^D; eol = <undef>; eol2 = <undef>; swtch = <undef>;
start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 5;
-parenb -parodd cs8 -hupcl -cstopb cread clocal crtscts
ignbrk brkint ignpar -parmrk -inpck istrip -inlcr -igncr icrnl ixon -ixoff -iuclc -ixany -imaxbel -iutf8
opost -olcuc -ocrnl -onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
isig icanon -iexten -echo -echoe -echok -echonl -noflsh -xcase -tostop -echoprt -echoctl -echoke

Thanks in advance for your help,
Pa-trick.
 

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LEARN ABOUT NETBSD

stty

STTY(3) 						   BSD Library Functions Manual 						   STTY(3)

NAME

     stty, gtty -- set and get terminal state (defunct)

LIBRARY

     Compatibility Library (libcompat, -lcompat)

SYNOPSIS

     #include <sgtty.h>

     stty(int fd, struct sgttyb *buf);

     gtty(int fd, struct sgttyb *buf);

DESCRIPTION

     These interfaces are obsoleted by ioctl(2).  They are available from the compatibility library, libcompat.

     The stty() function sets the state of the terminal associated with fd.  The gtty() function retrieves the state of the terminal associated
     with fd.  To set the state of a terminal the call must have write permission.

     The stty() call is actually 'ioctl(fd, TIOCSETP, buf)', while the gtty() call is 'ioctl(fd, TIOCGETP, buf)'.  See ioctl(2) and tty(4) for an
     explanation.

DIAGNOSTICS

     If the call is successful 0 is returned, otherwise -1 is returned and the global variable errno contains the reason for the failure.

SEE ALSO

     ioctl(2), tty(4)

HISTORY

     The stty() and gtty() functions appeared in 4.2BSD.

BSD
								   June 4, 1993 							       BSD
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