Wednesday, November 23, 2011: Generating a Tone on Internal PC Speaker (Linux C, C++)
So I played a bit with the PC Speaker like I like to do before in an AX-11. I tried using Beep() on Windows 7, but it didn’t work, so I had to use Linux. I searched a lot on the Internet for how to make it generate a tone so I’ll post it here for future reference.
By the way here’s the result:
Enabling the PC Speaker
sudo modprobe pcspkr
#include <unistd.h> #include <fcntl.h> #include <linux/kd.h> #include <sys/ioctl.h> // ... ioctl(STDOUT_FILENO, KIOCSOUND, 1193180 / freq); usleep(wait); ioctl(STDOUT_FILENO, KIOCSOUND, 0);