Turn on RAW_IO on Windows

src/device.rs

@@ -475,7 +475,12 @@ impl Interface {
     ///
     /// * An IN endpoint address must have the top (`0x80`) bit set.
     pub fn bulk_in_queue(&self, endpoint: u8) -> Queue<RequestBuffer> {
-        Queue::new(self.backend.clone(), endpoint, EndpointType::Bulk)
+        let interface = self.backend.clone();
+
+        #[cfg(target_os = "windows")]
+        interface.enable_raw_io(endpoint);
+
+        Queue::new(interface, endpoint, EndpointType::Bulk)
     }
 
     /// Create a queue for managing multiple **OUT (device-to-host)** transfers on a **bulk** endpoint.
@@ -512,7 +517,12 @@ impl Interface {
     ///
     /// * An IN endpoint address must have the top (`0x80`) bit set.
     pub fn interrupt_in_queue(&self, endpoint: u8) -> Queue<RequestBuffer> {
-        Queue::new(self.backend.clone(), endpoint, EndpointType::Interrupt)
+        let interface = self.backend.clone();
+
+        #[cfg(target_os = "windows")]
+        interface.enable_raw_io(endpoint);
+
+        Queue::new(interface, endpoint, EndpointType::Interrupt)
     }
 
     /// Create a queue for managing multiple **OUT (device-to-host)** transfers on an **interrupt** endpoint.

src/platform/windows_winusb/device.rs

@@ -12,7 +12,7 @@ use log::{debug, error, info, warn};
 use windows_sys::Win32::{
     Devices::Usb::{
         WinUsb_ControlTransfer, WinUsb_Free, WinUsb_Initialize, WinUsb_ResetPipe,
-        WinUsb_SetCurrentAlternateSetting, WinUsb_SetPipePolicy, PIPE_TRANSFER_TIMEOUT,
+        WinUsb_SetCurrentAlternateSetting, WinUsb_SetPipePolicy, PIPE_TRANSFER_TIMEOUT, RAW_IO,
         WINUSB_INTERFACE_HANDLE, WINUSB_SETUP_PACKET,
     },
     Foundation::{GetLastError, FALSE, TRUE},
@@ -289,6 +289,26 @@ impl WindowsInterface {
             }
         }
     }
+
+    pub(crate) fn enable_raw_io(&self, endpoint: u8) {
+        let enable: u32 = 1;
+        unsafe {
+            let r = WinUsb_SetPipePolicy(
+                self.winusb_handle,
+                endpoint,
+                RAW_IO,
+                size_of_val(&enable) as u32,
+                &enable as *const u32 as *const c_void,
+            );
+            if r == 1 {
+                debug!(
+                    "WinUsb_SetPipePolicy succeeded to enable RAW_IO on endpoint 0x{endpoint:02X}"
+                );
+            } else {
+                warn!("WinUsb_SetPipePolicy failed to enable RAW_IO on endpoint 0x{endpoint:02X}");
+            }
+        }
+    }
 }
 
 impl Drop for WindowsInterface {