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ableos/sysdata/programs/ps2_mouse_driver/src/main.hb

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.{memory, buffer, log, string, math} := @use("../../../libraries/stn/src/lib.hb")
Vec2 := math.Vec2
intouch := @use("../../../libraries/intouch/src/lib.hb");
.{MouseEvent} := intouch.events
i9 := packed struct {sign: bool, value: u8}
Button := struct {id: u8}
$LeftButton := Button.(1)
$RightButton := Button.(2)
$MiddleButton := Button.(4)
$Button4 := Button.(8)
$Button5 := Button.(16)
send_byte := fn(target: u8, data: u8): void {
loop if (memory.inb(0x64) & 2) == 0 break
memory.outb(target, data)
}
reset_mouse := fn(): void {
@inline(send_byte, 0x64, 0xD4)
@inline(send_byte, 0x60, 0xFF)
loop if memory.inb(0x60) == 0xAA {
log.info("Self check passed.\0")
return
}
}
send_command_byte := fn(byte: u8): void {
@inline(send_byte, 0x64, 0xD4)
@inline(send_byte, 0x60, byte)
loop if memory.inb(0x60) == 0xFA {
return
}
}
set_defaults := fn(): void @inline(send_command_byte, 0xF6)
disable_streaming := fn(): void @inline(send_command_byte, 0xF5)
enable_streaming := fn(): void @inline(send_command_byte, 0xF4)
set_remote_mode := fn(): void @inline(send_command_byte, 0xF0)
set_warp_mode := fn(): void @inline(send_command_byte, 0xEE)
reset_warp_mode := fn(): void @inline(send_command_byte, 0xEC)
set_stream_mode := fn(): void @inline(send_command_byte, 0xEA)
set_non_linear_scaling := fn(): void @inline(send_command_byte, 0xE7)
set_linear_scaling := fn(): void @inline(send_command_byte, 0xE6)
resend_packet := fn(): void @inline(send_command_byte, 0xFE)
SampleRate := struct {value: u8}
$sr10 := SampleRate.(10)
$sr20 := SampleRate.(20)
$sr40 := SampleRate.(40)
$sr60 := SampleRate.(60)
$sr80 := SampleRate.(80)
$sr100 := SampleRate.(100)
$sr200 := SampleRate.(200)
set_sample_rate := fn(sample_rate: SampleRate): void {
@inline(send_command_byte, 0xE6)
@inline(send_command_byte, sample_rate.value)
}
Resolution := struct {value: u8}
$res_1count_per_mm := Resolution.(0)
$res_2count_per_mm := Resolution.(1)
$res_4count_per_mm := Resolution.(2)
$res_8count_per_mm := Resolution.(3)
set_resolution := fn(resolution: Resolution): void {
@inline(send_command_byte, 0xE6)
@inline(send_command_byte, resolution.value)
}
set_up_mouse := fn(): void {
@inline(reset_mouse)
@inline(set_resolution, res_8count_per_mm)
@inline(enable_streaming)
}
button_states := @as(u8, 0)
main := fn(): int {
mouse_buffer := buffer.create("PS/2 Mouse\0")
format_page := memory.alloc(u8, 1024)
send_byte(0x64, 0xA8)
log.info("Aux mouse device enabled.\0")
set_up_mouse()
set_resolution(res_8count_per_mm)
x := @as(u8, 0)
y := @as(u8, 0)
loop {
loop if (memory.inb(0x64) & 0x20) == 0x20 break
status := memory.inb(0x60)
if status == 0xAA {
loop if memory.inb(0x60) == 0 break
log.info("Mouse plugged in!\0")
set_up_mouse()
continue
}
event := MouseEvent.(0, 0, false, false, false)
changes := button_states ^ status & 7
if (changes & LeftButton.id) != 0 | (status & LeftButton.id) != 0 {
event.left = true
} else {
event.left = false
}
if (changes & MiddleButton.id) != 0 | (status & MiddleButton.id) != 0 {
event.middle = true
} else {
event.middle = false
}
if (changes & RightButton.id) != 0 | (status & RightButton.id) != 0 {
event.right = true
} else {
event.right = false
}
button_states ^= changes
dx := i9.(false, 0)
dy := i9.(false, 0)
dx.value = memory.inb(0x60)
dx.sign = (status & 0x10) > 0
dy.value = memory.inb(0x60)
dy.sign = (status & 0x20) != 0
y_change := @as(i8, @bitcast(dy.value))
x_change := @as(i8, @bitcast(dx.value))
event.x_change = x_change
event.y_change = y_change
buffer.write(MouseEvent, mouse_buffer, &event)
}
return 0
}