Date: Wed, 07 Mar 2001 10:26:54 -0700 From: Don Wilde <Don@Silver-Lynx.com> To: freebsd-questions@freebsd.org Subject: simple hardware interface Message-ID: <3AA66F5E.961A15E1@Silver-Lynx.com>
next in thread | raw e-mail | index | archive | help
Hi, folks -
I'm looking to do some simple hardware IO on a picobsd system, and I
came across an old hardware interface protocol as per 'man 4 io'. Is
this a valid approach? It seems too easy, after all the driver source
I've been reading!
fh = open("/dev/io", O_RDONLY);
outb(port,value);
close(fh);
I just want to attach some bi-color LEDs to the settable lines (RTS,
DTR, TXD, etc.) in my second serial port and poke them a few dozen times
a second, and I'd rather not go to the trouble of sorting out a full
device driver.
Please reply directly, if you have experience with this. Thanks in
advance!
--
Don Wilde Don@Silver-Lynx.com
Silver Lynx Embedded Microsystems Architects
2218 Southern Bl. Ste. 12 Rio Rancho, NM 87124
505-891-4175 FAX 891-4185
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3AA66F5E.961A15E1>