Date: Sun, 3 Sep 2006 13:39:00 -0700 (PDT) From: backyard <backyard1454-bsd@yahoo.com> To: stan <stanb@panix.com>, ?????? ????? <bug2bug@bug2bug.tk> Cc: freebsd-questions@freebsd.org Subject: Re: A question about programming RS-232 Message-ID: <20060903203900.98946.qmail@web83114.mail.mud.yahoo.com> In-Reply-To: <20060903173516.GA27923@teddy.fas.com>
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--- stan <stanb@panix.com> wrote: > On Sun, Sep 03, 2006 at 11:26:04PM +0600, ?????? > ????? wrote: > > Hello. > > I have a question I can't deal myself. > > And nobody can help me in resolving my problem. > > > > Problem: > > I have a hand-made device, I want to control from > FreeBSD 6.1 > > (I am porting this application from Windows > equivalent). > > But I don't know, in what device /dev/ I should > write to get reults. > > I tryed to write bytes into /dev/ttyd0, > /dev/cuad0, but got nothing. :( > > > Start off by using minicom (or cu) to talk to the > device. By doing > this you can sort through baud rate/parity,hardware > issues. > > Once you have that working, then move on to code. > > -- > Unix is very simple, but it takes a genius to > understand the simplicity. > (Dennis Ritchie) > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org" > does your handmade device use RS-232? If its PIC or some such microcontroller based they claim to be RS-232 compliant but they do not always use +12V and -12V levels. MAX-232 chips can correct this. I assume if it worked in windows for you this might not the case, but you never know. -brian
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