diff --git a/embassy-rp/src/usb.rs b/embassy-rp/src/usb.rs index 0a904aab..7a83dcb4 100644 --- a/embassy-rp/src/usb.rs +++ b/embassy-rp/src/usb.rs @@ -811,8 +811,8 @@ impl<'d, T: Instance> driver::ControlPipe for ControlPipe<'d, T> { async move { trace!("control: accept"); + let bufcontrol = T::dpram().ep_in_buffer_control(0); unsafe { - let bufcontrol = T::dpram().ep_in_buffer_control(0); bufcontrol.write(|w| { w.set_length(0, 0); w.set_pid(0, true); @@ -826,6 +826,18 @@ impl<'d, T: Instance> driver::ControlPipe for ControlPipe<'d, T> { w.set_available(0, true); }); } + + // wait for completion before returning, needed so + // set_address() doesn't happen early. + poll_fn(|cx| { + EP_IN_WAKERS[0].register(cx.waker()); + if unsafe { bufcontrol.read().available(0) } { + Poll::Pending + } else { + Poll::Ready(()) + } + }) + .await; } }