components/
proximity.rs
1use capsules_extra::proximity::ProximitySensor;
15use core::mem::MaybeUninit;
16use kernel::capabilities;
17use kernel::component::Component;
18use kernel::create_capability;
19use kernel::hil;
20
21#[macro_export]
22macro_rules! proximity_component_static {
23 () => {{
24 kernel::static_buf!(capsules_extra::proximity::ProximitySensor<'static>)
25 };};
26}
27
28pub struct ProximityComponent<P: hil::sensors::ProximityDriver<'static> + 'static> {
29 sensor: &'static P,
30 board_kernel: &'static kernel::Kernel,
31 driver_num: usize,
32}
33
34impl<P: hil::sensors::ProximityDriver<'static>> ProximityComponent<P> {
35 pub fn new(
36 sensor: &'static P,
37 board_kernel: &'static kernel::Kernel,
38 driver_num: usize,
39 ) -> ProximityComponent<P> {
40 ProximityComponent {
41 sensor,
42 board_kernel,
43 driver_num,
44 }
45 }
46}
47
48impl<P: hil::sensors::ProximityDriver<'static>> Component for ProximityComponent<P> {
49 type StaticInput = &'static mut MaybeUninit<ProximitySensor<'static>>;
50 type Output = &'static ProximitySensor<'static>;
51
52 fn finalize(self, s: Self::StaticInput) -> Self::Output {
53 let grant_cap = create_capability!(capabilities::MemoryAllocationCapability);
54 let grant = self.board_kernel.create_grant(self.driver_num, &grant_cap);
55
56 let proximity = s.write(ProximitySensor::new(self.sensor, grant));
57
58 hil::sensors::ProximityDriver::set_client(self.sensor, proximity);
59 proximity
60 }
61}