Re: Programing in C...

[Dave Mielke]

[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>

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