Merge pull request #83 from ryan-summers/rs/issue-82/short-data-stage

Adding handling of short DATA stage during SETUP transactions

Author: eldruin

CHANGELOG.md

@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+* Fixed an issue where USB devices were not enumerating on Windows ([#32](https://github.com/rust-embedded-community/usb-device/issues/82))
+
 ...
 
 ## [0.2.8] - 2021-03-13

src/control_pipe.rs

@@ -147,7 +147,9 @@ impl<B: UsbBus> ControlPipe<'_, B> {
                     return Some(req);
                 }
             }
-            ControlState::StatusOut => {
+            // The host may terminate a DATA stage early by sending a zero-length status packet
+            // acknowledging the data we sent it.
+            ControlState::StatusOut | ControlState::DataIn | ControlState::DataInLast => {
                 self.ep_out.read(&mut []).ok();
                 self.state = ControlState::Idle;
             }