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New constructor to cater for the softdevice

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Also, correctly sets the initial power management state when using power management
This commit is contained in:
huntc 2022-07-08 16:22:25 +10:00
parent 8d71a358c8
commit 81796d29b4
1 changed files with 21 additions and 2 deletions
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23
embassy-nrf/src/usb.rs
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@ -35,6 +35,17 @@ pub struct Driver<'d, T: Instance> {
impl<'d, T: Instance> Driver<'d, T> {
pub fn new(_usb: impl Unborrow<Target = T> + 'd, irq: impl Unborrow<Target = T::Interrupt> + 'd) -> Self {
Self::with_power_state(_usb, irq, true)
}
/// Establish a new device that then puts the USB device into an initial power state.
/// Required when using the nRF softdevice where power is unavailable until
/// notified by it, at which time the the [`Self::power()`] method should then be called.
pub fn with_power_state(
_usb: impl Unborrow<Target = T> + 'd,
irq: impl Unborrow<Target = T::Interrupt> + 'd,
power_available: bool,
) -> Self {
unborrow!(irq);
irq.set_handler(Self::on_interrupt);
irq.unpend();
@ -42,7 +53,7 @@ impl<'d, T: Instance> Driver<'d, T> {
// Initialize the bus so that it signals that power is available.
// Not required when using with_power_management as we then rely on the irq.
POWER_AVAILABLE.store(true, Ordering::Relaxed);
POWER_AVAILABLE.store(power_available, Ordering::Relaxed);
BUS_WAKER.wake();
Self {
@ -68,7 +79,7 @@ impl<'d, T: Instance> Driver<'d, T> {
regs.intenset.write(|w| w.usbdetected().set().usbremoved().set());
Self::new(_usb, irq)
Self::with_power_state(_usb, irq, regs.usbregstatus.read().vbusdetect().is_vbus_present())
}
fn on_interrupt(_: *mut ()) {
@ -145,6 +156,14 @@ impl<'d, T: Instance> Driver<'d, T> {
BUS_WAKER.wake();
}
}
/// Manually declare that USB power is available or unavailable.
/// Useful in scenarios where power management cannot be managed
/// automatically e.g. when dealing with the nrf-softdevice.
pub fn power(available: bool) {
POWER_AVAILABLE.store(available, Ordering::Relaxed);
BUS_WAKER.wake();
}
}
impl<'d, T: Instance> driver::Driver<'d> for Driver<'d, T> {