mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-21 18:37:58 +03:00
f4cec2f110
Also tweak the kernel's Makefile to use -nostdinc and -nostdinc++. This prevents us from picking up random headers from ../Root, which may include older versions of kernel headers. Since we still need <initializer_list> for Vector, we specifically include the necessary GCC path. This is a bit hackish but it works for now.
21 lines
497 B
C++
21 lines
497 B
C++
#include <Kernel/Arch/i386/CPU.h>
|
|
#include <Kernel/Arch/i386/PIT.h>
|
|
#include <Kernel/Devices/PCSpeaker.h>
|
|
#include <Kernel/IO.h>
|
|
|
|
void PCSpeaker::tone_on(int frequency)
|
|
{
|
|
IO::out8(PIT_CTL, TIMER2_SELECT | WRITE_WORD | MODE_SQUARE_WAVE);
|
|
u16 timer_reload = BASE_FREQUENCY / frequency;
|
|
|
|
IO::out8(TIMER2_CTL, LSB(timer_reload));
|
|
IO::out8(TIMER2_CTL, MSB(timer_reload));
|
|
|
|
IO::out8(0x61, IO::in8(0x61) | 3);
|
|
}
|
|
|
|
void PCSpeaker::tone_off()
|
|
{
|
|
IO::out8(0x61, IO::in8(0x61) & ~3);
|
|
}
|