add tud_control_vendor_request_cb()/tud_control_vendor_complete_cb(), expose usbd control transfer

rename usbd_control_transfer/status to tud_control_transfer/status

examples/device/webusb/src/main.c

@@ -30,12 +30,6 @@
 #include "bsp/board.h"
 #include "tusb.h"
 
-/* This MIDI example send sequence of note (on/off) repeatedly. To test on PC, you need to install
- * synth software and midi connection management software. On
- * - Linux (Ubuntu) : install qsynth, qjackctl. Then connect TinyUSB output port to FLUID Synth input port
- *
- */
-
 //--------------------------------------------------------------------+
 // MACRO CONSTANT TYPEDEF PROTYPES
 //--------------------------------------------------------------------+

examples/device/webusb/src/usb_descriptors.c

@@ -174,3 +174,41 @@ uint16_t const* tud_descriptor_string_cb(uint8_t index)
 
   return _desc_str;
 }
+
+//--------------------------------------------------------------------+
+// WebUSB URL Descriptor
+//--------------------------------------------------------------------+
+#define URL  "github.com/hathach/tinyusb"
+
+typedef struct TU_ATTR_PACKED
+{
+  uint8_t bLength;
+  uint8_t bDescriptorType;
+  uint8_t bScheme;
+  char    url[];
+} tusb_desc_webusb_url_t;
+
+const tusb_desc_webusb_url_t desc_url =
+{
+  .bLength = 3 + sizeof(URL) - 1,
+  .bDescriptorType = 3, // WEBUSB URL type
+  .bScheme = 1, // 0: http, 1: https
+  .url = URL
+};
+
+bool tud_control_vendor_request_cb(uint8_t rhport, tusb_control_request_t const * request)
+{
+  if ( request->bRequest == 0x01 ) // webusb vendor code
+  {
+    return tud_control_xfer(rhport, request, (void*) &desc_url, desc_url.bLength);
+  }else
+  {
+    return false;
+  }
+}
+
+bool tud_control_vendor_complete_cb(uint8_t rhport, tusb_control_request_t const * request)
+{
+  (void) rhport;
+  return true;
+}