On Fri, Jan 26, 2007 at 09:06:52AM -0600, Paul Fulghum wrote: > ioctl(TIOCSETD/TIOCGETD) sets/returns an integer identifier > that can be compared agains the N_XXX macros. If you are > not explicitly setting this then is is probably the default N_TTY.
Yes it is N_TTY (value 0). I never set it. > Also at the application level, look at tcsetattr() for setting > the termios features. Look specifically at the c_cc[VTIME] and c_cc[VMIN] > members of the termios structure. These settings control how > much data must be available before returning data to a read(). > Try VTIME=0 and VMIN=1. > > Since your 'missing' data is always on the tail end, maybe > VMIN is set to 64 or something. OK, the tty settings according to stty that I am using are: # stty -F /dev/ttyn0 -a speed 230400 baud; rows 0; columns 0; line = 0; intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>; eol2 = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 0; -parenb -parodd cs8 hupcl -cstopb cread clocal -crtscts -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl -ixon -ixoff -iuclc -ixany -imaxbel -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 So min and time seems good. I am not explicitly setting those in my test program (unless one of the other settings implies it). I will add it explicitly just in case too. -- Len Sorensen - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
