improve usbd control transfer

1 files changed, 73 insertions, 0 deletions

diff --git a/tinyusb/device/usbd_pvt.h b/tinyusb/device/usbd_pvt.h
new file mode 100644
index 000000000..067052e5f
--- /dev/null
+++ b/tinyusb/device/usbd_pvt.h
@@ -0,0 +1,73 @@
+/**************************************************************************/
+/*!
+    @file     usbd_pvt.h
+    @author   hathach
+
+    @section LICENSE
+
+    Software License Agreement (BSD License)
+
+    Copyright (c) 2018, hathach (tinyusb.org)
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are met:
+    1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+    3. Neither the name of the copyright holders nor the
+    names of its contributors may be used to endorse or promote products
+    derived from this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
+    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+/**************************************************************************/
+#ifndef USBD_PVT_H_
+#define USBD_PVT_H_
+
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+//--------------------------------------------------------------------+
+// INTERNAL API
+//--------------------------------------------------------------------+
+extern osal_semaphore_t usbd_control_xfer_sem_hdl;
+
+tusb_error_t usbd_init(void);
+void         usbd_task( void* param);
+
+// Carry out Data and Status stage of control transfer
+tusb_error_t usbd_control_xfer_stask(uint8_t port, tusb_dir_t dir, uint8_t * buffer, uint16_t length);
+
+// Return Status of control transfer
+// Note dir is value of direction bit in setup packet (aka DATA stage direction)
+static inline bool usbd_control_status(uint8_t port, tusb_dir_t dir)
+{
+  // status direction is reversed to one in the setup packet
+  return tusb_dcd_control_xfer(port, 1-dir, NULL, 0);
+}
+
+static inline void usbd_control_stall(uint8_t port)
+{
+  tusb_dcd_edpt_stall(port, 0);
+}
+
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* USBD_PVT_H_ */