diff --git a/src/device/usbd_control.c b/src/device/usbd_control.c
index de1075033..e8bb648c9 100644
--- a/src/device/usbd_control.c
+++ b/src/device/usbd_control.c
@@ -1,167 +1,167 @@
-/* 
- * The MIT License (MIT)
- *
- * Copyright (c) 2019 Ha Thach (tinyusb.org)
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * This file is part of the TinyUSB stack.
- */
-
-#include "tusb_option.h"
-
-#if TUSB_OPT_DEVICE_ENABLED
-
-#include "tusb.h"
-#include "device/usbd_pvt.h"
-#include "dcd.h"
-
-enum
-{
-  EDPT_CTRL_OUT = 0x00,
-  EDPT_CTRL_IN  = 0x80
-};
-
-typedef struct
-{
-  tusb_control_request_t request;
-
-  void* buffer;
-  uint16_t len;
-  uint16_t total_transferred;
-  uint16_t requested_len;
-
-  bool (*complete_cb) (uint8_t, tusb_control_request_t const *);
-} usbd_control_xfer_t;
-
-static usbd_control_xfer_t _control_state;
-
-CFG_TUSB_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t _usbd_ctrl_buf[CFG_TUD_ENDPOINT0_SIZE];
-
-void usbd_control_reset (uint8_t rhport)
-{
-  (void) rhport;
-  tu_varclr(&_control_state);
-}
-
-bool tud_control_status(uint8_t rhport, tusb_control_request_t const * request)
-{
-  // status direction is reversed to one in the setup packet
-  return dcd_edpt_xfer(rhport, request->bmRequestType_bit.direction ? EDPT_CTRL_OUT : EDPT_CTRL_IN, NULL, 0);
-}
-
-// Each transaction is up to endpoint0's max packet size
-static bool start_control_data_xact(uint8_t rhport)
-{
-  uint16_t const xact_len = tu_min16(_control_state.len - _control_state.total_transferred, CFG_TUD_ENDPOINT0_SIZE);
-
-  uint8_t ep_addr = EDPT_CTRL_OUT;
-
-  if ( _control_state.request.bmRequestType_bit.direction == TUSB_DIR_IN )
-  {
-    ep_addr = EDPT_CTRL_IN;
-    memcpy(_usbd_ctrl_buf, _control_state.buffer, xact_len);
-  }
-
-  return dcd_edpt_xfer(rhport, ep_addr, _usbd_ctrl_buf, xact_len);
-}
-
-// TODO may find a better way
-void usbd_control_set_complete_callback( bool (*fp) (uint8_t, tusb_control_request_t const * ) )
-{
-  _control_state.complete_cb = fp;
-}
-
-bool tud_control_xfer(uint8_t rhport, tusb_control_request_t const * request, void* buffer, uint16_t len)
-{
-  // transmitted length must be <= requested length (USB 2.0 spec: 8.5.3.1 )
-  // FIXME: Should logic be here or in place that calls this function?
-  if(len > request->wLength)
-    len = request->wLength;
-
-  _control_state.request = (*request);
-  _control_state.buffer = buffer;
-  _control_state.total_transferred = 0;
-  _control_state.requested_len = request->wLength;
-  _control_state.len = len;
-
-  if ( len )
-  {
-    TU_ASSERT(buffer);
-
-    // Data stage
-    TU_ASSERT( start_control_data_xact(rhport) );
-  }else
-  {
-    // Status stage
-    TU_ASSERT( tud_control_status(rhport, request) );
-  }
-
-  return true;
-}
-
-// callback when a transaction complete on DATA stage of control endpoint
-bool usbd_control_xfer_cb (uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes)
-{
-  (void) result;
-  (void) ep_addr;
-
-  if ( _control_state.request.bmRequestType_bit.direction == TUSB_DIR_OUT )
-  {
-    TU_VERIFY(_control_state.buffer);
-    memcpy(_control_state.buffer, _usbd_ctrl_buf, xferred_bytes);
-  }
-
-  _control_state.total_transferred += xferred_bytes;
-  _control_state.buffer = ((uint8_t*)_control_state.buffer) + xferred_bytes;
-
-  if ( (_control_state.requested_len == _control_state.total_transferred) || xferred_bytes < CFG_TUD_ENDPOINT0_SIZE )
-
-  {
-    // DATA stage is complete
-    bool is_ok = true;
-
-    // invoke complete callback if set
-    // callback can still stall control in status phase e.g out data does not make sense
-    if ( _control_state.complete_cb )
-    {
-      is_ok = _control_state.complete_cb(rhport, &_control_state.request);
-    }
-
-    if ( is_ok )
-    {
-      // Send status
-      TU_ASSERT( tud_control_status(rhport, &_control_state.request) );
-    }else
-    {
-      // Stall both IN and OUT control endpoint
-      dcd_edpt_stall(rhport, EDPT_CTRL_OUT);
-      dcd_edpt_stall(rhport, EDPT_CTRL_IN);
-    }
-  }
-  else
-  {
-    // More data to transfer
-    TU_ASSERT( start_control_data_xact(rhport) );
-  }
-
-  return true;
-}
-
-#endif
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#include "tusb_option.h"
+
+#if TUSB_OPT_DEVICE_ENABLED
+
+#include "tusb.h"
+#include "device/usbd_pvt.h"
+#include "dcd.h"
+
+enum
+{
+  EDPT_CTRL_OUT = 0x00,
+  EDPT_CTRL_IN  = 0x80
+};
+
+typedef struct
+{
+  tusb_control_request_t request;
+
+  void* buffer;
+  uint16_t len;
+  uint16_t total_transferred;
+  uint16_t requested_len;
+
+  bool (*complete_cb) (uint8_t, tusb_control_request_t const *);
+} usbd_control_xfer_t;
+
+static usbd_control_xfer_t _control_state;
+
+CFG_TUSB_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t _usbd_ctrl_buf[CFG_TUD_ENDPOINT0_SIZE];
+
+void usbd_control_reset (uint8_t rhport)
+{
+  (void) rhport;
+  tu_varclr(&_control_state);
+}
+
+bool tud_control_status(uint8_t rhport, tusb_control_request_t const * request)
+{
+  // status direction is reversed to one in the setup packet
+  return dcd_edpt_xfer(rhport, request->bmRequestType_bit.direction ? EDPT_CTRL_OUT : EDPT_CTRL_IN, NULL, 0);
+}
+
+// Each transaction is up to endpoint0's max packet size
+static bool start_control_data_xact(uint8_t rhport)
+{
+  uint16_t const xact_len = tu_min16(_control_state.len - _control_state.total_transferred, CFG_TUD_ENDPOINT0_SIZE);
+
+  uint8_t ep_addr = EDPT_CTRL_OUT;
+
+  if ( _control_state.request.bmRequestType_bit.direction == TUSB_DIR_IN )
+  {
+    ep_addr = EDPT_CTRL_IN;
+    memcpy(_usbd_ctrl_buf, _control_state.buffer, xact_len);
+  }
+
+  return dcd_edpt_xfer(rhport, ep_addr, _usbd_ctrl_buf, xact_len);
+}
+
+// TODO may find a better way
+void usbd_control_set_complete_callback( bool (*fp) (uint8_t, tusb_control_request_t const * ) )
+{
+  _control_state.complete_cb = fp;
+}
+
+bool tud_control_xfer(uint8_t rhport, tusb_control_request_t const * request, void* buffer, uint16_t len)
+{
+  // transmitted length must be <= requested length (USB 2.0 spec: 8.5.3.1 )
+  // FIXME: Should logic be here or in place that calls this function?
+  if(len > request->wLength)
+    len = request->wLength;
+
+  _control_state.request = (*request);
+  _control_state.buffer = buffer;
+  _control_state.total_transferred = 0;
+  _control_state.requested_len = request->wLength;
+  _control_state.len = len;
+
+  if ( len )
+  {
+    TU_ASSERT(buffer);
+
+    // Data stage
+    TU_ASSERT( start_control_data_xact(rhport) );
+  }else
+  {
+    // Status stage
+    TU_ASSERT( tud_control_status(rhport, request) );
+  }
+
+  return true;
+}
+
+// callback when a transaction complete on DATA stage of control endpoint
+bool usbd_control_xfer_cb (uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes)
+{
+  (void) result;
+  (void) ep_addr;
+
+  if ( _control_state.request.bmRequestType_bit.direction == TUSB_DIR_OUT )
+  {
+    TU_VERIFY(_control_state.buffer);
+    memcpy(_control_state.buffer, _usbd_ctrl_buf, xferred_bytes);
+  }
+
+  _control_state.total_transferred += xferred_bytes;
+  _control_state.buffer = ((uint8_t*)_control_state.buffer) + xferred_bytes;
+
+  if ( (_control_state.requested_len == _control_state.total_transferred) || xferred_bytes < CFG_TUD_ENDPOINT0_SIZE )
+
+  {
+    // DATA stage is complete
+    bool is_ok = true;
+
+    // invoke complete callback if set
+    // callback can still stall control in status phase e.g out data does not make sense
+    if ( _control_state.complete_cb )
+    {
+      is_ok = _control_state.complete_cb(rhport, &_control_state.request);
+    }
+
+    if ( is_ok )
+    {
+      // Send status
+      TU_ASSERT( tud_control_status(rhport, &_control_state.request) );
+    }else
+    {
+      // Stall both IN and OUT control endpoint
+      dcd_edpt_stall(rhport, EDPT_CTRL_OUT);
+      dcd_edpt_stall(rhport, EDPT_CTRL_IN);
+    }
+  }
+  else
+  {
+    // More data to transfer
+    TU_ASSERT( start_control_data_xact(rhport) );
+  }
+
+  return true;
+}
+
+#endif