On 11/08/11 05:00, Bruce Tulloch wrote:
I am using the latest synaser (007.005.002) from the synapse library which works just fine with (USB) serial ports on Linux and Windows but Mac OSX 10.6 it is proving problematic.The call which opens the port (synaser.pas:946) is: FHandle := THandle(fpOpen(FDevice, O_RDWR or O_SYNC)); where in my case, FDevice is /dev/tty.usbserial.DCUIYCH4. This fpOpen call blocks indefinitely (i.e. it never returns). The device is present, working and requires no flow control: My-Mac:~ admin$ stty -f /dev/tty.usbserial-DCUIYCH4 -a speed 9600 baud; 0 rows; 0 columns; lflags: -icanon -isig -iexten -echo -echoe -echok -echoke -echonl -echoctl -echoprt -altwerase -noflsh -tostop -flusho -pendin -nokerninfo -extproc iflags: -istrip -icrnl -inlcr -igncr -ixon -ixoff -ixany -imaxbel -iutf8 -ignbrk -brkint -inpck -ignpar -parmrk oflags: -opost -onlcr -oxtabs -onocr -onlret cflags: cread cs8 -parenb -parodd hupcl -clocal -cstopb -crtscts -dsrflow -dtrflow -mdmbuf cchars: discard = ^O; dsusp = ^Y; eof = ^D; eol =<undef>; eol2 =<undef>; erase = ^?; intr = ^C; kill = ^U; lnext = ^V; min = 1; quit = ^\; reprint = ^R; start = ^Q; status = ^T; stop = ^S; susp = ^Z; time = 0; werase = ^W;
Have you tried setting clocal under oflags? If "open" thinks it's a modem, then it can block until it sees carrier detection. I notice that my serial ports have clocal set.
and the screen command opens and communicates via this port just fine so I don't believe there is anything wrong with the device, the driver or the state of any port flags when fpOpen is attempted. Can anyone tell me what I might be doing wrong here? Note that adding the O_NONBLOCK flag allows the fpOpen to succeed but all subsequent attempts to talk to the port return ENOTTY which is of course wrong as it is a real (USB) serial (TTY) device.
This should have helped for the modem issue. Did you remove the O_SYNC? Maybe setting clocal after opening will help?
Henry _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
