1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
// Copyright 2019 Robin Krahl <robin.krahl@ireas.org>
// SPDX-License-Identifier: GPL-3.0-or-later
use usb_device::bus::{InterfaceNumber, StringIndex, UsbBus, UsbBusAllocator};
use usb_device::class::{ControlIn, ControlOut, UsbClass};
use usb_device::descriptor::DescriptorWriter;
use usb_device::endpoint::{EndpointAddress, EndpointIn};
use usb_device::Result;
const INTERFACE_CLASS_HID: u8 = 0x03;
enum_u8! {
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum Subclass {
None = 0x00,
BootInterface = 0x01,
}
}
enum_u8! {
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum Protocol {
None = 0x00,
Keyboard = 0x01,
Mouse = 0x02,
}
}
pub trait HidDevice {
fn subclass(&self) -> Subclass;
fn protocol(&self) -> Protocol;
}
pub struct HidClass<'a, B: UsbBus, D: HidDevice> {
device: D,
interface: InterfaceNumber,
endpoint_interrupt_in: EndpointIn<'a, B>,
expect_interrupt_in_complete: bool,
}
impl<B: UsbBus, D: HidDevice> HidClass<'_, B, D> {
pub fn new(device: D, alloc: &UsbBusAllocator<B>) -> HidClass<'_, B, D> {
HidClass {
device,
interface: alloc.interface(),
endpoint_interrupt_in: alloc.interrupt(8, 10),
expect_interrupt_in_complete: false,
}
}
}
impl<B: UsbBus, D: HidDevice> UsbClass<B> for HidClass<'_, B, D> {
fn poll(&mut self) {}
fn reset(&mut self) {
self.expect_interrupt_in_complete = false;
}
fn get_configuration_descriptors(&self, writer: &mut DescriptorWriter) -> Result<()> {
writer.interface(
self.interface,
INTERFACE_CLASS_HID,
self.device.subclass().into(),
self.device.protocol().into(),
)?;
writer.endpoint(&self.endpoint_interrupt_in)?;
Ok(())
}
fn get_string(&self, _index: StringIndex, _lang_id: u16) -> Option<&str> {
None
}
fn endpoint_in_complete(&mut self, addr: EndpointAddress) {
if addr == self.endpoint_interrupt_in.address() {
if self.expect_interrupt_in_complete {
self.expect_interrupt_in_complete = false;
} else {
panic!("unexpected endpoint_in_complete");
}
}
}
fn endpoint_out(&mut self, _addr: EndpointAddress) {}
fn control_in(&mut self, _xfer: ControlIn<B>) {}
fn control_out(&mut self, _xfer: ControlOut<B>) {}
}
|