Date: Sun, 27 Oct 2002 13:20:39 -0800 (PST) From: David Nicholas Kayal <davek@saturn5.com> To: freebsd-hackers@freebsd.org Subject: Show me the light Message-ID: <Pine.BSF.4.44.0210271319360.709-100000@blackbox.yayproductions.com>
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I got a LED and touched it to the positive and negative ends of two 1.5v
AA batteries in a serial configuration.
The LED lit up. I then crimped on pins to the end of the LED wires and
again tested it with the batteries. Again, I saw the light.
I plugged said tinned pins into the 2nd and 25th pinout of a 25 pin port
(the parallel port): positive lead to the 2 pin, and negative pin to\
the the 25 pin.
I then executed the following program:
I have written a small program:
#include <stdio.h>
#include <dev/ppbus/ppi.h>
#include <dev/ppbus/ppbconf.h>
int main()
{
int fd;
while(1)
{
ioctl(fd, PPISDATA, 255);
}
}
I am expecting to see that LED light up, flashing if not creating a solid
light. However, I am not.
any help would be very much appreciated
Sincerely,
David
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