What is the benefit of using /dev/ttyS0 instead of "com1" on Cygwin? Do you have a short explanation for me, or perhaps a pointer to some more detailed info?
Thanks a lot, ;Henning
On Wed, 24 Mar 2004, Curt, WE7U wrote:
Our application runs on multiple OS'es. A few of our WinXP users (and perhaps Win2k, can't remember) have had "if test -c com1" hang during our configure stage.
We've already figured out that we should be using "/dev/ttyS0" instead of "com1", and have switched to that. Because of the hang we're trying "if test -d /proc/registry as the test". If /proc/registry is found, we skip the file test for the serial device on Cygwin boxes, thereby avoiding the hang.
Excerpt (the version that hangs sometimes):
AC_DEFUN([XASTIR_DETECT_DEVICES], [ AC_MSG_CHECKING([for devices]) if test -c com1 ; then ac_tnc_port=com1 ac_gps_port=com2 elif test -c /dev/cuaa0 ; then ac_tnc_port=/dev/cuaa0 ac_gps_port=/dev/cuaa1
New improved version:
AC_DEFUN([XASTIR_DETECT_DEVICES], [ AC_MSG_CHECKING([for devices]) if test -d /proc/registry ; then ac_tnc_port=/dev/ttyS0 ac_gps_port=/dev/ttyS1 elif test -c /dev/cuaa0 ; then ac_tnc_port=/dev/cuaa0 ac_gps_port=/dev/cuaa1
Should "if test -c com1" or "if test -c /dev/ttyS0" work on Cygwin across all Windows platforms it supports?
We'd rather do "if test -c /dev/ttyS0" if possible, so that it's similar across all platforms we support.
-- H. Henning Schmidt email: [EMAIL PROTECTED] phone: +49 (0) 6155 / 899 283 fax: +49 (0) 6155 / 899 284
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