Thanks! I was wanting to do that just the other day, for tuning up
my radio... wanted to write a script to beep whenever an incoming
packet was decoded, with a different tone for different senders...
I was pinging two stations at once, and watching the "quality" signal
from my TNC, so my eyes were busy and I would've liked to hear the
beeps when I had it tuned right and it actually got a packet (hiss -
voltage goes up - "beep!"). Was tweaking the discriminator can in a
Mitrek, and it's really touchy. So now I know how to write a beep
utility to call from a shell script.
On Thu, Apr 20, 2000 at 07:46:36AM -0400, Dave Mielke wrote:
> [quoted lines by r00t the LiNuXeRRR on April 20, 2000, at 10:59]
>
> > Does exist a sound(); function like the one from Borland C from
> >dos that turns on the speaker at a given frequance... The sound();
> >function doesn't work in linux...
>
> Yes. You do it through ioctl. Open a file descriptor to the console:
>
> int fd = open("/dev/tty0", O_WRONLY);
>
> Start the tone by:
>
> ioctl(fd, KIOCSOUND, (1190000 / herz));
>
> Stop the tone by:
>
> ioctl(fd, KIOCSOUND, 0);
>
> For O_WRONLY, you'll need:
>
> #include <fcntl.h>
>
> For KIOCSOUND, you'll need:
>
> #include <linux/kd.h>
--
_______ Shawn T. Rutledge / KB7PWD [EMAIL PROTECTED]
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