diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/input/ps2/mouse.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/src/input/ps2/mouse.c b/src/input/ps2/mouse.c new file mode 100644 index 0000000..5113c70 --- /dev/null +++ b/src/input/ps2/mouse.c @@ -0,0 +1,105 @@ +#include "../../io/io.h" + +char mouse_cycle = 0; +signed char mouse_byte[3], mouse_ex[3]; +signed char mouse_x = 0; +signed char mouse_y = 0; +int mouse_but_1 = 0; +int mouse_but_2 = 0; +int mm_n[3] = {0, 0, 0,}; + +void mouse_handler(struct iregs *a_r) { + switch (mouse_cycle) { + case 0: + mouse_byte[0] = receive(0x60); + mouse_cycle++; + break; + case 1: + mouse_byte[1] = receive(0x60); + mouse_cycle++; + break; + case 2: + mouse_byte[2] = receive(0x60); + mouse_x = mouse_byte[1]; + mouse_y = mouse_byte[2]; + mouse_but_1 = (mouse_byte[0] % 2); + mouse_but_2 = ((mouse_byte[0] % 4) - (mouse_byte[0] % 2)) / 2; + mouse_cycle = 0; + mouse_ex[0] = mouse_byte[0]; + mm_n[0] = 1; + mouse_ex[1] = mouse_byte[1]; + mm_n[1] = 1; + mouse_ex[2] = mouse_byte[2]; + mm_n[2] = 1; + break; + } +} + +inline void mouse_wait(char a_type) { + unsigned int _time_out = 100000; + if (a_type == 0) { + while (_time_out--) { + if ((receive(0x64) & 1) == 1) { + return; + } + } + return; + } else { + while (_time_out--) { + if ((receive(0x64) & 2) == 0) { + return; + } + } + return; + } +} + +inline void mouse_write(char a_write) { + mouse_wait(1); + send(0x64, 0xD4); + mouse_wait(1); + send(0x60, a_write); +} + +char mouse_read() { + mouse_wait(0); + return receive(0x60); +} + +void mouse_install() { + char _status; + + // Enable auxiliary mouse device + mouse_wait(1); + send(0x64, 0xA8); + + // Enable interrupts + mouse_wait(1); + send(0x64, 0x20); + mouse_wait(0); + _status = (receive(0x60) | 2); + mouse_wait(1); + send(0x64, 0x60); + mouse_wait(1); + send(0x60, _status); + + // Use default settings + mouse_write(0xF6); + mouse_read(); + + // Enable mouse + mouse_write(0xF4); + mouse_read(); + + // Setup the mouse handler + // irq_install_handler(12, mouse_handler); +} + + +char get_mouse(int n) { + if (mm_n[n] == 1) { + mm_n[n] = 0; + return mouse_ex[n]; + } else + return 0; +}
\ No newline at end of file |