Am Dienstag, den 03.11.2009, 09:39 +0100 schrieb Tomas Hajny: > On Tue, November 3, 2009 02:33, Holger Bruns wrote: > > Brad Campbell schrieb: > >> > >> Why not try attaching your test code that is failing so we can help > >> you get it working? > > > > Done. My fault was the following declaration: > > > > var inbuffer: array of char; > > > > This is a better declaration: > > > > var inbuffer: array[0..10] of char; > > > > Now I got my code working. Hidden pointers are new to me. Therefore I > > felt in trouble with it. Secondly, it appears to be necessary to use the > > fpc compiler as "root", not simply as a user, I guess. > > The compiler may be certainly run under other users (well, at least if > installed properly), but access to ports requires root privileges as far > as I know.
No it doesn't if the access rights are set properly. 1. make all users of the program members of a special group (e.g. dialers) 2. as root change the ownership of the tty device node to that group At my desk: $ cat /etc/group|grep dialer dialer:*:68:marc $ ls -l /dev/cua* crw-rw---- 1 uucp dialer 0, 71 3 Nov 14:36 /dev/cuad0 crw-rw---- 1 uucp dialer 0, 72 3 Nov 14:36 /dev/cuad0.init crw-rw---- 1 uucp dialer 0, 73 3 Nov 14:36 /dev/cuad0.lock crw-rw---- 1 uucp dialer 0, 77 3 Nov 14:36 /dev/cuad1 crw-rw---- 1 uucp dialer 0, 78 3 Nov 14:36 /dev/cuad1.init crw-rw---- 1 uucp dialer 0, 79 3 Nov 14:36 /dev/cuad1.lock As you can see I'm allowed to attach my dmm and open the serial port for reading it's measurements without being root or using sudo. I don't know wheter todays Lunix systems have static device nodes seen here for ttys or if they are created dynamically and the rights have to be set in some configuration file - consult your systems docs or a good tutorial or book an those questions. Try at the console: $ man chown $ man group $ man ttys at least on FreeBSD this manual pages exist and are very informative. Have fun, Marc -- Marc Santhoff <m.santh...@web.de> _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
