Merge pull request #89 from hathach/develop

resolve #35 (vendor class), implement #86 (webusb)

22 files changed, 910 insertions, 177 deletions

diff --git a/examples/device/cdc_msc_hid/src/main.c b/examples/device/cdc_msc_hid/src/main.c
index 771638ac4..65ef1dcbd 100644
--- a/examples/device/cdc_msc_hid/src/main.c
+++ b/examples/device/cdc_msc_hid/src/main.c
@@ -30,6 +30,8 @@
 #include "bsp/board.h"
 #include "tusb.h"
 
+#include "usb_descriptors.h"
+
 //--------------------------------------------------------------------+
 // MACRO CONSTANT TYPEDEF PROTYPES
 //--------------------------------------------------------------------+
@@ -61,9 +63,7 @@ int main(void)
 
   while (1)
   {
-    // tinyusb device task
-    tud_task();
-
+    tud_task(); // tinyusb device task
     led_blinking_task();
 
 #if CFG_TUD_CDC
@@ -164,13 +164,6 @@ void tud_cdc_rx_cb(uint8_t itf)
 //--------------------------------------------------------------------+
 #if CFG_TUD_HID
 
-// Must match with ID declared by HID Report Descriptor, better to be in header file
-enum
-{
-  REPORT_ID_KEYBOARD = 1,
-  REPORT_ID_MOUSE
-};
-
 void hid_task(void)
 {
   // Poll every 10ms
diff --git a/examples/device/cdc_msc_hid/src/tusb_config.h b/examples/device/cdc_msc_hid/src/tusb_config.h
index e55dc9d01..1c0ee349c 100644
--- a/examples/device/cdc_msc_hid/src/tusb_config.h
+++ b/examples/device/cdc_msc_hid/src/tusb_config.h
@@ -62,32 +62,32 @@
 #endif
 
 #ifndef CFG_TUSB_MEM_ALIGN
-#define CFG_TUSB_MEM_ALIGN          TU_ATTR_ALIGNED(4)
+#define CFG_TUSB_MEM_ALIGN          __attribute__ ((aligned(4)))
 #endif
 
 //--------------------------------------------------------------------
 // DEVICE CONFIGURATION
 //--------------------------------------------------------------------
 
-#define CFG_TUD_ENDOINT0_SIZE       64
+#define CFG_TUD_ENDOINT0_SIZE    64
 
 //------------- CLASS -------------//
-#define CFG_TUD_CDC                 1
-#define CFG_TUD_MSC                 1
-#define CFG_TUD_HID                 1
+#define CFG_TUD_CDC              1
+#define CFG_TUD_MSC              1
+#define CFG_TUD_HID              1
 
-#define CFG_TUD_MIDI                0
-#define CFG_TUD_CUSTOM_CLASS        0
+#define CFG_TUD_MIDI             0
+#define CFG_TUD_VENDOR           0
 
 // CDC FIFO size of TX and RX
-#define CFG_TUD_CDC_RX_BUFSIZE      64
-#define CFG_TUD_CDC_TX_BUFSIZE      64
+#define CFG_TUD_CDC_RX_BUFSIZE   64
+#define CFG_TUD_CDC_TX_BUFSIZE   64
 
 // MSC Buffer size of Device Mass storage
-#define CFG_TUD_MSC_BUFSIZE         512
+#define CFG_TUD_MSC_BUFSIZE      512
 
 // HID buffer size Should be sufficient to hold ID (if any) + Data
-#define CFG_TUD_HID_BUFSIZE         16
+#define CFG_TUD_HID_BUFSIZE      16
 
 #ifdef __cplusplus
  }
diff --git a/examples/device/cdc_msc_hid/src/usb_descriptors.c b/examples/device/cdc_msc_hid/src/usb_descriptors.c
index 1692151a0..ee79f4ece 100644
--- a/examples/device/cdc_msc_hid/src/usb_descriptors.c
+++ b/examples/device/cdc_msc_hid/src/usb_descriptors.c
@@ -24,6 +24,7 @@
  */
 
 #include "tusb.h"
+#include "usb_descriptors.h"
 
 /* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug.
  * Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC.
@@ -32,9 +33,12 @@
  *   [MSB]         HID | MSC | CDC          [LSB]
  */
 #define _PID_MAP(itf, n)  ( (CFG_TUD_##itf) << (n) )
-#define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | _PID_MAP(MIDI, 3) )
+#define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \
+                           _PID_MAP(MIDI, 3) | _PID_MAP(VENDOR, 4) )
 
-//------------- Device Descriptors -------------//
+//--------------------------------------------------------------------+
+// Device Descriptors
+//--------------------------------------------------------------------+
 tusb_desc_device_t const desc_device =
 {
     .bLength            = sizeof(tusb_desc_device_t),
@@ -66,13 +70,17 @@ tusb_desc_device_t const desc_device =
     .bNumConfigurations = 0x01
 };
 
-//------------- HID Report Descriptor -------------//
-#if CFG_TUD_HID
-enum
+// Invoked when received GET DEVICE DESCRIPTOR
+// Application return pointer to descriptor
+uint8_t const * tud_descriptor_device_cb(void)
 {
-  REPORT_ID_KEYBOARD = 1,
-  REPORT_ID_MOUSE
-};
+  return (uint8_t const *) &desc_device;
+}
+
+//--------------------------------------------------------------------+
+// HID Report Descriptor
+//--------------------------------------------------------------------+
+#if CFG_TUD_HID
 
 uint8_t const desc_hid_report[] =
 {
@@ -90,7 +98,10 @@ uint8_t const * tud_hid_descriptor_report_cb(void)
 
 #endif
 
-//------------- Configuration Descriptor -------------//
+//--------------------------------------------------------------------+
+// Configuration Descriptor
+//--------------------------------------------------------------------+
+
 enum
 {
 #if CFG_TUD_CDC
@@ -109,10 +120,7 @@ enum
   ITF_NUM_TOTAL
 };
 
-enum
-{
-  CONFIG_TOTAL_LEN = TUD_CONFIG_DESC_LEN + CFG_TUD_CDC*TUD_CDC_DESC_LEN + CFG_TUD_MSC*TUD_MSC_DESC_LEN + CFG_TUD_HID*TUD_HID_DESC_LEN
-};
+#define CONFIG_TOTAL_LEN    (TUD_CONFIG_DESC_LEN + CFG_TUD_CDC*TUD_CDC_DESC_LEN + CFG_TUD_MSC*TUD_MSC_DESC_LEN + CFG_TUD_HID*TUD_HID_DESC_LEN)
 
 #if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX
   // LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number
@@ -145,12 +153,6 @@ uint8_t const desc_configuration[] =
 #endif
 };
 
-// Invoked when received GET DEVICE DESCRIPTOR
-// Application return pointer to descriptor
-uint8_t const * tud_descriptor_device_cb(void)
-{
-  return (uint8_t const *) &desc_device;
-}
 
 // Invoked when received GET CONFIGURATION DESCRIPTOR
 // Application return pointer to descriptor
@@ -160,7 +162,10 @@ uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
   (void) index; // for multiple configurations
   return desc_configuration;
 }
-//------------- String Descriptors -------------//
+
+//--------------------------------------------------------------------+
+// String Descriptors
+//--------------------------------------------------------------------+
 
 // array of pointer to string descriptors
 char const* string_desc_arr [] =
diff --git a/examples/device/cdc_msc_hid/src/usb_descriptors.h b/examples/device/cdc_msc_hid/src/usb_descriptors.h
new file mode 100644
index 000000000..6992d3349
--- /dev/null
+++ b/examples/device/cdc_msc_hid/src/usb_descriptors.h
@@ -0,0 +1,34 @@
+/* 
+ * 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.
+ */
+
+#ifndef USB_DESCRIPTORS_H_
+#define USB_DESCRIPTORS_H_
+
+enum
+{
+  REPORT_ID_KEYBOARD = 1,
+  REPORT_ID_MOUSE
+};
+
+#endif /* USB_DESCRIPTORS_H_ */
diff --git a/examples/device/cdc_msc_hid_freertos/src/main.c b/examples/device/cdc_msc_hid_freertos/src/main.c
index 56ea3a7a3..cb707675d 100644
--- a/examples/device/cdc_msc_hid_freertos/src/main.c
+++ b/examples/device/cdc_msc_hid_freertos/src/main.c
@@ -36,6 +36,8 @@
 #include "bsp/board.h"
 #include "tusb.h"
 
+#include "usb_descriptors.h"
+
 //--------------------------------------------------------------------+
 // MACRO CONSTANT TYPEDEF PROTYPES
 //--------------------------------------------------------------------+
@@ -194,13 +196,6 @@ void tud_cdc_rx_cb(uint8_t itf)
 //--------------------------------------------------------------------+
 #if CFG_TUD_HID
 
-// Must match with ID declared by HID Report Descriptor, better to be in header file
-enum
-{
-  REPORT_ID_KEYBOARD = 1,
-  REPORT_ID_MOUSE
-};
-
 void hid_task(void* params)
 {
   (void) params;
diff --git a/examples/device/cdc_msc_hid_freertos/src/tusb_config.h b/examples/device/cdc_msc_hid_freertos/src/tusb_config.h
index 76ec948e5..bb31eac06 100644
--- a/examples/device/cdc_msc_hid_freertos/src/tusb_config.h
+++ b/examples/device/cdc_msc_hid_freertos/src/tusb_config.h
@@ -62,32 +62,32 @@
 #endif
 
 #ifndef CFG_TUSB_MEM_ALIGN
-#define CFG_TUSB_MEM_ALIGN          TU_ATTR_ALIGNED(4)
+#define CFG_TUSB_MEM_ALIGN          __attribute__ ((aligned(4)))
 #endif
 
 //--------------------------------------------------------------------
 // DEVICE CONFIGURATION
 //--------------------------------------------------------------------
 
-#define CFG_TUD_ENDOINT0_SIZE       64
+#define CFG_TUD_ENDOINT0_SIZE    64
 
 //------------- CLASS -------------//
-#define CFG_TUD_CDC                 1
-#define CFG_TUD_MSC                 1
-#define CFG_TUD_HID                 1
+#define CFG_TUD_CDC              1
+#define CFG_TUD_MSC              1
+#define CFG_TUD_HID              1
 
-#define CFG_TUD_MIDI                0
-#define CFG_TUD_CUSTOM_CLASS        0
+#define CFG_TUD_MIDI             0
+#define CFG_TUD_VENDOR           0
 
 // CDC FIFO size of TX and RX
-#define CFG_TUD_CDC_RX_BUFSIZE      64
-#define CFG_TUD_CDC_TX_BUFSIZE      64
+#define CFG_TUD_CDC_RX_BUFSIZE   64
+#define CFG_TUD_CDC_TX_BUFSIZE   64
 
 // MSC Buffer size of Device Mass storage
-#define CFG_TUD_MSC_BUFSIZE         512
+#define CFG_TUD_MSC_BUFSIZE      512
 
 // HID buffer size Should be sufficient to hold ID (if any) + Data
-#define CFG_TUD_HID_BUFSIZE         16
+#define CFG_TUD_HID_BUFSIZE      16
 
 #ifdef __cplusplus
  }
diff --git a/examples/device/cdc_msc_hid_freertos/src/usb_descriptors.c b/examples/device/cdc_msc_hid_freertos/src/usb_descriptors.c
index 579e1ebcf..699067f73 100644
--- a/examples/device/cdc_msc_hid_freertos/src/usb_descriptors.c
+++ b/examples/device/cdc_msc_hid_freertos/src/usb_descriptors.c
@@ -24,6 +24,7 @@
  */
 
 #include "tusb.h"
+#include "usb_descriptors.h"
 
 /* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug.
  * Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC.
@@ -32,9 +33,12 @@
  *   [MSB]         HID | MSC | CDC          [LSB]
  */
 #define _PID_MAP(itf, n)  ( (CFG_TUD_##itf) << (n) )
-#define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | _PID_MAP(MIDI, 3) )
+#define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \
+                           _PID_MAP(MIDI, 3) | _PID_MAP(VENDOR, 4) )
 
-//------------- Device Descriptors -------------//
+//--------------------------------------------------------------------+
+// Device Descriptors
+//--------------------------------------------------------------------+
 tusb_desc_device_t const desc_device =
 {
     .bLength            = sizeof(tusb_desc_device_t),
@@ -66,13 +70,17 @@ tusb_desc_device_t const desc_device =
     .bNumConfigurations = 0x01
 };
 
-//------------- HID Report Descriptor -------------//
-#if CFG_TUD_HID
-enum
+// Invoked when received GET DEVICE DESCRIPTOR
+// Application return pointer to descriptor
+uint8_t const * tud_descriptor_device_cb(void)
 {
-  REPORT_ID_KEYBOARD = 1,
-  REPORT_ID_MOUSE
-};
+  return (uint8_t const *) &desc_device;
+}
+
+//--------------------------------------------------------------------+
+// HID Report Descriptor
+//--------------------------------------------------------------------+
+#if CFG_TUD_HID
 
 uint8_t const desc_hid_report[] =
 {
@@ -90,7 +98,10 @@ uint8_t const * tud_hid_descriptor_report_cb(void)
 
 #endif
 
-//------------- Configuration Descriptor -------------//
+//--------------------------------------------------------------------+
+// Configuration Descriptor
+//--------------------------------------------------------------------+
+
 enum
 {
 #if CFG_TUD_CDC
@@ -109,10 +120,7 @@ enum
   ITF_NUM_TOTAL
 };
 
-enum
-{
-  CONFIG_TOTAL_LEN = TUD_CONFIG_DESC_LEN + CFG_TUD_CDC*TUD_CDC_DESC_LEN + CFG_TUD_MSC*TUD_MSC_DESC_LEN + CFG_TUD_HID*TUD_HID_DESC_LEN
-};
+#define CONFIG_TOTAL_LEN    (TUD_CONFIG_DESC_LEN + CFG_TUD_CDC*TUD_CDC_DESC_LEN + CFG_TUD_MSC*TUD_MSC_DESC_LEN + CFG_TUD_HID*TUD_HID_DESC_LEN)
 
 #if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX
   // LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number
@@ -145,12 +153,7 @@ uint8_t const desc_configuration[] =
 #endif
 };
 
-// Invoked when received GET DEVICE DESCRIPTOR
-// Application return pointer to descriptor
-uint8_t const * tud_descriptor_device_cb(void)
-{
-  return (uint8_t const *) &desc_device;
-}
+
 
 // Invoked when received GET CONFIGURATION DESCRIPTOR
 // Application return pointer to descriptor
@@ -161,7 +164,9 @@ uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
   return desc_configuration;
 }
 
-//------------- String Descriptors -------------//
+//--------------------------------------------------------------------+
+// String Descriptors
+//--------------------------------------------------------------------+
 
 // array of pointer to string descriptors
 char const* string_desc_arr [] =
diff --git a/examples/device/cdc_msc_hid_freertos/src/usb_descriptors.h b/examples/device/cdc_msc_hid_freertos/src/usb_descriptors.h
new file mode 100644
index 000000000..6992d3349
--- /dev/null
+++ b/examples/device/cdc_msc_hid_freertos/src/usb_descriptors.h
@@ -0,0 +1,34 @@
+/* 
+ * 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.
+ */
+
+#ifndef USB_DESCRIPTORS_H_
+#define USB_DESCRIPTORS_H_
+
+enum
+{
+  REPORT_ID_KEYBOARD = 1,
+  REPORT_ID_MOUSE
+};
+
+#endif /* USB_DESCRIPTORS_H_ */
diff --git a/examples/device/hid_generic_inout/src/main.c b/examples/device/hid_generic_inout/src/main.c
index 77d6cf7b5..c1dc43b34 100644
--- a/examples/device/hid_generic_inout/src/main.c
+++ b/examples/device/hid_generic_inout/src/main.c
@@ -76,9 +76,7 @@ int main(void)
 
   while (1)
   {
-    // tinyusb device task
-    tud_task();
-
+    tud_task(); // tinyusb device task
     led_blinking_task();
   }
 
diff --git a/examples/device/hid_generic_inout/src/tusb_config.h b/examples/device/hid_generic_inout/src/tusb_config.h
index fb19d5169..c55529fcb 100644
--- a/examples/device/hid_generic_inout/src/tusb_config.h
+++ b/examples/device/hid_generic_inout/src/tusb_config.h
@@ -62,24 +62,24 @@
 #endif
 
 #ifndef CFG_TUSB_MEM_ALIGN
-#define CFG_TUSB_MEM_ALIGN          TU_ATTR_ALIGNED(4)
+#define CFG_TUSB_MEM_ALIGN          __attribute__ ((aligned(4)))
 #endif
 
 //--------------------------------------------------------------------
 // DEVICE CONFIGURATION
 //--------------------------------------------------------------------
 
-#define CFG_TUD_ENDOINT0_SIZE       64
+#define CFG_TUD_ENDOINT0_SIZE   64
 
 //------------- CLASS -------------//
-#define CFG_TUD_CDC                 0
-#define CFG_TUD_MSC                 0
-#define CFG_TUD_HID                 1
-#define CFG_TUD_MIDI                0
-#define CFG_TUD_CUSTOM_CLASS        0
+#define CFG_TUD_CDC             0
+#define CFG_TUD_MSC             0
+#define CFG_TUD_HID             1
+#define CFG_TUD_MIDI            0
+#define CFG_TUD_VENDOR          0
 
 // HID buffer size Should be sufficient to hold ID (if any) + Data
-#define CFG_TUD_HID_BUFSIZE         64
+#define CFG_TUD_HID_BUFSIZE     64
 
 #ifdef __cplusplus
  }
diff --git a/examples/device/hid_generic_inout/src/usb_descriptors.c b/examples/device/hid_generic_inout/src/usb_descriptors.c
index ced915935..7578a8b7f 100644
--- a/examples/device/hid_generic_inout/src/usb_descriptors.c
+++ b/examples/device/hid_generic_inout/src/usb_descriptors.c
@@ -32,9 +32,12 @@
  *   [MSB]         HID | MSC | CDC          [LSB]
  */
 #define _PID_MAP(itf, n)  ( (CFG_TUD_##itf) << (n) )
-#define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | _PID_MAP(MIDI, 3) )
+#define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \
+                           _PID_MAP(MIDI, 3) | _PID_MAP(VENDOR, 4) )
 
-//------------- Device Descriptors -------------//
+//--------------------------------------------------------------------+
+// Device Descriptors
+//--------------------------------------------------------------------+
 tusb_desc_device_t const desc_device =
 {
     .bLength            = sizeof(tusb_desc_device_t),
@@ -56,23 +59,42 @@ tusb_desc_device_t const desc_device =
     .bNumConfigurations = 0x01
 };
 
-//------------- HID Report Descriptor -------------//
+// Invoked when received GET DEVICE DESCRIPTOR
+// Application return pointer to descriptor
+uint8_t const * tud_descriptor_device_cb(void)
+{
+  return (uint8_t const *) &desc_device;
+}
+
+//--------------------------------------------------------------------+
+// HID Report Descriptor
+//--------------------------------------------------------------------+
+
 uint8_t const desc_hid_report[] =
 {
   TUD_HID_REPORT_DESC_GENERIC_INOUT(CFG_TUD_HID_BUFSIZE)
 };
 
-//------------- Configuration Descriptor -------------//
+// Invoked when received GET HID REPORT DESCRIPTOR
+// Application return pointer to descriptor
+// Descriptor contents must exist long enough for transfer to complete
+uint8_t const * tud_hid_descriptor_report_cb(void)
+{
+  return desc_hid_report;
+}
+
+//--------------------------------------------------------------------+
+// Configuration Descriptor
+//--------------------------------------------------------------------+
+
 enum
 {
   ITF_NUM_HID,
   ITF_NUM_TOTAL
 };
 
-enum
-{
-  CONFIG_TOTAL_LEN = TUD_CONFIG_DESC_LEN + TUD_HID_INOUT_DESC_LEN
-};
+
+#define  CONFIG_TOTAL_LEN  (TUD_CONFIG_DESC_LEN + TUD_HID_INOUT_DESC_LEN)
 
 // Use Endpoint 2 instead of 1 due to NXP MCU
 // LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number
@@ -85,17 +107,9 @@ uint8_t const desc_configuration[] =
   TUD_CONFIG_DESCRIPTOR(ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100),
 
   // Interface number, string index, protocol, report descriptor len, EP In & Out address, size & polling interval
-  TUD_HID_INOUT_DESCRIPTOR(ITF_NUM_HID, 0, HID_PROTOCOL_NONE, sizeof(desc_hid_report), 0x80 | EPNUM_HID, EPNUM_HID, CFG_TUD_HID_BUFSIZE, 10)
+  TUD_HID_INOUT_DESCRIPTOR(ITF_NUM_HID, 0, HID_PROTOCOL_NONE, sizeof(desc_hid_report), EPNUM_HID, 0x80 | EPNUM_HID, CFG_TUD_HID_BUFSIZE, 10)
 };
 
-
-// Invoked when received GET DEVICE DESCRIPTOR
-// Application return pointer to descriptor
-uint8_t const * tud_descriptor_device_cb(void)
-{
-  return (uint8_t const *) &desc_device;
-}
-
 // Invoked when received GET CONFIGURATION DESCRIPTOR
 // Application return pointer to descriptor
 // Descriptor contents must exist long enough for transfer to complete
@@ -105,15 +119,9 @@ uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
   return desc_configuration;
 }
 
-// Invoked when received GET HID REPORT DESCRIPTOR
-// Application return pointer to descriptor
-// Descriptor contents must exist long enough for transfer to complete
-uint8_t const * tud_hid_descriptor_report_cb(void)
-{
-  return desc_hid_report;
-}
-
-//------------- String Descriptors -------------//
+//--------------------------------------------------------------------+
+// String Descriptors
+//--------------------------------------------------------------------+
 
 // array of pointer to string descriptors
 char const* string_desc_arr [] =
diff --git a/examples/device/midi_test/src/main.c b/examples/device/midi_test/src/main.c
index 0cb9b522d..381bcf634 100644
--- a/examples/device/midi_test/src/main.c
+++ b/examples/device/midi_test/src/main.c
@@ -32,8 +32,9 @@
 
 /* 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
- *
+ * - Linux (Ubuntu): install qsynth, qjackctl. Then connect TinyUSB output port to FLUID Synth input port
+ * - Windows: install MIDI-OX
+ * - MacOS: SimpleSynth
  */
 
 //--------------------------------------------------------------------+
@@ -65,11 +66,8 @@ int main(void)
 
   while (1)
   {
-    // tinyusb device task
-    tud_task();
-
+    tud_task(); // tinyusb device task
     led_blinking_task();
-
     midi_task();
   }
 
diff --git a/examples/device/midi_test/src/tusb_config.h b/examples/device/midi_test/src/tusb_config.h
index 6ea2f43db..d588b4df9 100644
--- a/examples/device/midi_test/src/tusb_config.h
+++ b/examples/device/midi_test/src/tusb_config.h
@@ -62,25 +62,25 @@
 #endif
 
 #ifndef CFG_TUSB_MEM_ALIGN
-#define CFG_TUSB_MEM_ALIGN          TU_ATTR_ALIGNED(4)
+#define CFG_TUSB_MEM_ALIGN          __attribute__ ((aligned(4)))
 #endif
 
 //--------------------------------------------------------------------
 // DEVICE CONFIGURATION
 //--------------------------------------------------------------------
 
-#define CFG_TUD_ENDOINT0_SIZE       64
+#define CFG_TUD_ENDOINT0_SIZE     64
 
 //------------- CLASS -------------//
-#define CFG_TUD_CDC                 0
-#define CFG_TUD_MSC                 0
-#define CFG_TUD_HID                 0
-#define CFG_TUD_MIDI                1
-#define CFG_TUD_CUSTOM_CLASS        0
+#define CFG_TUD_CDC               0
+#define CFG_TUD_MSC               0
+#define CFG_TUD_HID               0
+#define CFG_TUD_MIDI              1
+#define CFG_TUD_VENDOR            0
 
 // MIDI FIFO size of TX and RX
-#define CFG_TUD_MIDI_RX_BUFSIZE     64
-#define CFG_TUD_MIDI_TX_BUFSIZE     64
+#define CFG_TUD_MIDI_RX_BUFSIZE   64
+#define CFG_TUD_MIDI_TX_BUFSIZE   64
 
 #ifdef __cplusplus
  }
diff --git a/examples/device/midi_test/src/usb_descriptors.c b/examples/device/midi_test/src/usb_descriptors.c
index 3eef02bb2..95d3cca25 100644
--- a/examples/device/midi_test/src/usb_descriptors.c
+++ b/examples/device/midi_test/src/usb_descriptors.c
@@ -32,19 +32,20 @@
  *   [MSB]       MIDI | HID | MSC | CDC          [LSB]
  */
 #define _PID_MAP(itf, n)  ( (CFG_TUD_##itf) << (n) )
-#define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | _PID_MAP(MIDI, 3) )
+#define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \
+                           _PID_MAP(MIDI, 3) | _PID_MAP(VENDOR, 4) )
 
-//------------- Device Descriptors -------------//
+//--------------------------------------------------------------------+
+// Device Descriptors
+//--------------------------------------------------------------------+
 tusb_desc_device_t const desc_device =
 {
     .bLength            = sizeof(tusb_desc_device_t),
     .bDescriptorType    = TUSB_DESC_DEVICE,
     .bcdUSB             = 0x0200,
-    // Use Interface Association Descriptor (IAD) for Audio
-    // As required by USB Specs IAD's subclass must be common class (2) and protocol must be IAD (1)
-    .bDeviceClass       = TUSB_CLASS_MISC,
-    .bDeviceSubClass    = MISC_SUBCLASS_COMMON,
-    .bDeviceProtocol    = MISC_PROTOCOL_IAD,
+    .bDeviceClass       = 0x00,
+    .bDeviceSubClass    = 0x00,
+    .bDeviceProtocol    = 0x00,
     .bMaxPacketSize0    = CFG_TUD_ENDOINT0_SIZE,
 
     .idVendor           = 0xCafe,
@@ -58,7 +59,18 @@ tusb_desc_device_t const desc_device =
     .bNumConfigurations = 0x01
 };
 
-//------------- Configuration Descriptor -------------//
+// Invoked when received GET DEVICE DESCRIPTOR
+// Application return pointer to descriptor
+uint8_t const * tud_descriptor_device_cb(void)
+{
+  return (uint8_t const *) &desc_device;
+}
+
+
+//--------------------------------------------------------------------+
+// Configuration Descriptor
+//--------------------------------------------------------------------+
+
 enum
 {
   ITF_NUM_MIDI = 0,
@@ -66,10 +78,7 @@ enum
   ITF_NUM_TOTAL
 };
 
-enum
-{
-  CONFIG_TOTAL_LEN = TUD_CONFIG_DESC_LEN + TUD_MIDI_DESC_LEN
-};
+#define CONFIG_TOTAL_LEN  (TUD_CONFIG_DESC_LEN + TUD_MIDI_DESC_LEN)
 
 #if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX
   // LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number
@@ -88,13 +97,6 @@ uint8_t const desc_configuration[] =
   TUD_MIDI_DESCRIPTOR(ITF_NUM_MIDI, 0, EPNUM_MIDI, 0x80 | EPNUM_MIDI, (CFG_TUSB_RHPORT0_MODE & OPT_MODE_HIGH_SPEED) ? 512 : 64)
 };
 
-// Invoked when received GET DEVICE DESCRIPTOR
-// Application return pointer to descriptor
-uint8_t const * tud_descriptor_device_cb(void)
-{
-  return (uint8_t const *) &desc_device;
-}
-
 // Invoked when received GET CONFIGURATION DESCRIPTOR
 // Application return pointer to descriptor
 // Descriptor contents must exist long enough for transfer to complete
@@ -104,7 +106,9 @@ uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
   return desc_configuration;
 }
 
-//------------- String Descriptors -------------//
+//--------------------------------------------------------------------+
+// String Descriptors
+//--------------------------------------------------------------------+
 
 // array of pointer to string descriptors
 char const* string_desc_arr [] =
diff --git a/examples/device/msc_dual_lun/src/main.c b/examples/device/msc_dual_lun/src/main.c
index 060f20644..0293261ad 100644
--- a/examples/device/msc_dual_lun/src/main.c
+++ b/examples/device/msc_dual_lun/src/main.c
@@ -58,9 +58,7 @@ int main(void)
 
   while (1)
   {
-    // tinyusb device task
-    tud_task();
-
+    tud_task(); // tinyusb device task
     led_blinking_task();
   }
 
diff --git a/examples/device/msc_dual_lun/src/tusb_config.h b/examples/device/msc_dual_lun/src/tusb_config.h
index db9974ea3..2e40b9e86 100644
--- a/examples/device/msc_dual_lun/src/tusb_config.h
+++ b/examples/device/msc_dual_lun/src/tusb_config.h
@@ -62,24 +62,24 @@
 #endif
 
 #ifndef CFG_TUSB_MEM_ALIGN
-#define CFG_TUSB_MEM_ALIGN          TU_ATTR_ALIGNED(4)
+#define CFG_TUSB_MEM_ALIGN          __attribute__ ((aligned(4)))
 #endif
 
 //--------------------------------------------------------------------
 // DEVICE CONFIGURATION
 //--------------------------------------------------------------------
 
-#define CFG_TUD_ENDOINT0_SIZE       64
+#define CFG_TUD_ENDOINT0_SIZE   64
 
 //------------- CLASS -------------//
-#define CFG_TUD_CDC                 0
-#define CFG_TUD_MSC                 1
-#define CFG_TUD_HID                 0
-#define CFG_TUD_MIDI                0
-#define CFG_TUD_CUSTOM_CLASS        0
+#define CFG_TUD_CDC             0
+#define CFG_TUD_MSC             1
+#define CFG_TUD_HID             0
+#define CFG_TUD_MIDI            0
+#define CFG_TUD_VENDOR          0
 
 // MSC Buffer size of Device Mass storage
-#define CFG_TUD_MSC_BUFSIZE         512
+#define CFG_TUD_MSC_BUFSIZE     512
 
 #ifdef __cplusplus
  }
diff --git a/examples/device/msc_dual_lun/src/usb_descriptors.c b/examples/device/msc_dual_lun/src/usb_descriptors.c
index 1a71b7fcc..6064d8d7b 100644
--- a/examples/device/msc_dual_lun/src/usb_descriptors.c
+++ b/examples/device/msc_dual_lun/src/usb_descriptors.c
@@ -32,9 +32,12 @@
  *   [MSB]         HID | MSC | CDC          [LSB]
  */
 #define _PID_MAP(itf, n)  ( (CFG_TUD_##itf) << (n) )
-#define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | _PID_MAP(MIDI, 3) )
+#define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \
+                           _PID_MAP(MIDI, 3) | _PID_MAP(VENDOR, 4) )
 
-//------------- Device Descriptors -------------//
+//--------------------------------------------------------------------+
+// Device Descriptors
+//--------------------------------------------------------------------+
 tusb_desc_device_t const desc_device =
 {
     .bLength            = sizeof(tusb_desc_device_t),
@@ -56,17 +59,24 @@ tusb_desc_device_t const desc_device =
     .bNumConfigurations = 0x01
 };
 
-//------------- Configuration Descriptor -------------//
+// Invoked when received GET DEVICE DESCRIPTOR
+// Application return pointer to descriptor
+uint8_t const * tud_descriptor_device_cb(void)
+{
+  return (uint8_t const *) &desc_device;
+}
+
+//--------------------------------------------------------------------+
+// Configuration Descriptor
+//--------------------------------------------------------------------+
+
 enum
 {
   ITF_NUM_MSC,
   ITF_NUM_TOTAL
 };
 
-enum
-{
-  CONFIG_TOTAL_LEN = TUD_CONFIG_DESC_LEN + TUD_MSC_DESC_LEN
-};
+#define CONFIG_TOTAL_LEN    (TUD_CONFIG_DESC_LEN + TUD_MSC_DESC_LEN)
 
 #if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX
   // LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number
@@ -85,13 +95,6 @@ uint8_t const desc_configuration[] =
   TUD_MSC_DESCRIPTOR(ITF_NUM_MSC, 0, EPNUM_MSC, 0x80 | EPNUM_MSC, (CFG_TUSB_RHPORT0_MODE & OPT_MODE_HIGH_SPEED) ? 512 : 64),
 };
 
-// Invoked when received GET DEVICE DESCRIPTOR
-// Application return pointer to descriptor
-uint8_t const * tud_descriptor_device_cb(void)
-{
-  return (uint8_t const *) &desc_device;
-}
-
 // Invoked when received GET CONFIGURATION DESCRIPTOR
 // Application return pointer to descriptor
 // Descriptor contents must exist long enough for transfer to complete
@@ -101,7 +104,9 @@ uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
   return desc_configuration;
 }
 
-//------------- String Descriptors -------------//
+//--------------------------------------------------------------------+
+// String Descriptors
+//--------------------------------------------------------------------+
 
 // array of pointer to string descriptors
 char const* string_desc_arr [] =
diff --git a/examples/device/webusb_serial/Makefile b/examples/device/webusb_serial/Makefile
new file mode 100644
index 000000000..5a455078e
--- /dev/null
+++ b/examples/device/webusb_serial/Makefile
@@ -0,0 +1,12 @@
+include ../../../tools/top.mk
+include ../../make.mk
+
+INC += \
+  src \
+  $(TOP)/hw \
+
+# Example source
+EXAMPLE_SOURCE += $(wildcard src/*.c)
+SRC_C += $(addprefix $(CURRENT_PATH)/, $(EXAMPLE_SOURCE))
+
+include ../../rules.mk
diff --git a/examples/device/webusb_serial/src/main.c b/examples/device/webusb_serial/src/main.c
new file mode 100644
index 000000000..e1a098048
--- /dev/null
+++ b/examples/device/webusb_serial/src/main.c
@@ -0,0 +1,276 @@
+/* 
+ * 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.
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "bsp/board.h"
+#include "tusb.h"
+#include "usb_descriptors.h"
+
+//--------------------------------------------------------------------+
+// MACRO CONSTANT TYPEDEF PROTYPES
+//--------------------------------------------------------------------+
+
+/* Blink pattern
+ * - 250 ms  : device not mounted
+ * - 1000 ms : device mounted
+ * - 2500 ms : device is suspended
+ */
+enum  {
+  BLINK_NOT_MOUNTED = 250,
+  BLINK_MOUNTED     = 1000,
+  BLINK_SUSPENDED   = 2500,
+
+  BLINK_ALWAYS_ON   = UINT32_MAX,
+  BLINK_ALWAYS_OFF  = 0
+};
+
+static uint32_t blink_interval_ms = BLINK_NOT_MOUNTED;
+
+#define URL  "www.tinyusb.org/examples/webusb-serial"
+
+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
+};
+
+static bool web_serial_connected = false;
+
+//------------- prototypes -------------//
+void led_blinking_task(void);
+void cdc_task(void);
+void webserial_task(void);
+
+/*------------- MAIN -------------*/
+int main(void)
+{
+  board_init();
+
+  tusb_init();
+
+  while (1)
+  {
+    tud_task(); // tinyusb device task
+    cdc_task();
+    webserial_task();
+    led_blinking_task();
+  }
+
+  return 0;
+}
+
+// send characters to both CDC and WebUSB
+void echo_all(uint8_t buf[], uint32_t count)
+{
+  // echo to web serial
+  if ( web_serial_connected )
+  {
+    tud_vendor_write(buf, count);
+  }
+
+  // echo to cdc
+  if ( tud_cdc_connected() )
+  {
+    for(uint32_t i=0; i<count; i++)
+    {
+      tud_cdc_write_char(buf[i]);
+
+      if ( buf[i] == '\r' ) tud_cdc_write_char('\n');
+    }
+    tud_cdc_write_flush();
+  }
+}
+
+//--------------------------------------------------------------------+
+// Device callbacks
+//--------------------------------------------------------------------+
+
+// Invoked when device is mounted
+void tud_mount_cb(void)
+{
+  blink_interval_ms = BLINK_MOUNTED;
+}
+
+// Invoked when device is unmounted
+void tud_umount_cb(void)
+{
+  blink_interval_ms = BLINK_NOT_MOUNTED;
+}
+
+// Invoked when usb bus is suspended
+// remote_wakeup_en : if host allow us  to perform remote wakeup
+// Within 7ms, device must draw an average of current less than 2.5 mA from bus
+void tud_suspend_cb(bool remote_wakeup_en)
+{
+  (void) remote_wakeup_en;
+  blink_interval_ms = BLINK_SUSPENDED;
+}
+
+// Invoked when usb bus is resumed
+void tud_resume_cb(void)
+{
+  blink_interval_ms = BLINK_MOUNTED;
+}
+
+//--------------------------------------------------------------------+
+// WebUSB use vendor class
+//--------------------------------------------------------------------+
+
+// Invoked when received VENDOR control request
+bool tud_vendor_control_request_cb(uint8_t rhport, tusb_control_request_t const * request)
+{
+  switch (request->bRequest)
+  {
+    case VENDOR_REQUEST_WEBUSB:
+      // match vendor request in BOS descriptor
+      // Get landing page url
+      return tud_control_xfer(rhport, request, (void*) &desc_url, desc_url.bLength);
+
+    case VENDOR_REQUEST_MICROSOFT:
+      if ( request->wIndex == 7 )
+      {
+        // Get Microsoft OS 2.0 compatible descriptor
+        uint16_t total_len;
+        memcpy(&total_len, desc_ms_os_20+8, 2);
+
+        return tud_control_xfer(rhport, request, (void*) desc_ms_os_20, total_len);
+      }else
+      {
+        return false;
+      }
+
+    case 0x22:
+      // Webserial simulate the CDC_REQUEST_SET_CONTROL_LINE_STATE (0x22) to
+      // connect and disconnect.
+      web_serial_connected = (request->wValue != 0);
+
+      // Always lit LED if connected
+      if ( web_serial_connected )
+      {
+        board_led_write(true);
+        blink_interval_ms = BLINK_ALWAYS_ON;
+
+        tud_vendor_write_str("\r\nTinyUSB WebUSB device example\r\n");
+      }else
+      {
+        blink_interval_ms = BLINK_MOUNTED;
+      }
+
+      // response with status OK
+      return tud_control_status(rhport, request);
+
+    default:
+      // stall unknown request
+      return false;
+  }
+
+  return true;
+}
+
+// Invoked when DATA Stage of VENDOR's request is complete
+bool tud_vendor_control_complete_cb(uint8_t rhport, tusb_control_request_t const * request)
+{
+  (void) rhport;
+  (void) request;
+
+  // nothing to do
+  return true;
+}
+
+void webserial_task(void)
+{
+  if ( web_serial_connected )
+  {
+    if ( tud_vendor_available() )
+    {
+      uint8_t buf[64];
+      uint32_t count = tud_vendor_read(buf, sizeof(buf));
+
+      // echo back to both web serial and cdc
+      echo_all(buf, count);
+    }
+  }
+}
+
+
+//--------------------------------------------------------------------+
+// USB CDC
+//--------------------------------------------------------------------+
+void cdc_task(void)
+{
+  if ( tud_cdc_connected() )
+  {
+    // connected and there are data available
+    if ( tud_cdc_available() )
+    {
+      uint8_t buf[64];
+
+      uint32_t count = tud_cdc_read(buf, sizeof(buf));
+
+      // echo back to both web serial and cdc
+      echo_all(buf, count);
+    }
+  }
+}
+
+// Invoked when cdc when line state changed e.g connected/disconnected
+void tud_cdc_line_state_cb(uint8_t itf, bool dtr, bool rts)
+{
+  (void) itf;
+
+  // connected
+  if ( dtr && rts )
+  {
+    // print initial message when connected
+    tud_cdc_write_str("\r\nTinyUSB WebUSB device example\r\n");
+  }
+}
+
+// Invoked when CDC interface received data from host
+void tud_cdc_rx_cb(uint8_t itf)
+{
+  (void) itf;
+}
+
+//--------------------------------------------------------------------+
+// BLINKING TASK
+//--------------------------------------------------------------------+
+void led_blinking_task(void)
+{
+  static uint32_t start_ms = 0;
+  static bool led_state = false;
+
+  // Blink every interval ms
+  if ( board_millis() - start_ms < blink_interval_ms) return; // not enough time
+  start_ms += blink_interval_ms;
+
+  board_led_write(led_state);
+  led_state = 1 - led_state; // toggle
+}
diff --git a/examples/device/webusb_serial/src/tusb_config.h b/examples/device/webusb_serial/src/tusb_config.h
new file mode 100644
index 000000000..ffedb997d
--- /dev/null
+++ b/examples/device/webusb_serial/src/tusb_config.h
@@ -0,0 +1,95 @@
+/*
+ * 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.
+ *
+ */
+
+#ifndef _TUSB_CONFIG_H_
+#define _TUSB_CONFIG_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+//--------------------------------------------------------------------
+// COMMON CONFIGURATION
+//--------------------------------------------------------------------
+
+// defined by compiler flags for flexibility
+#ifndef CFG_TUSB_MCU
+  #error CFG_TUSB_MCU must be defined
+#endif
+
+#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX
+#define CFG_TUSB_RHPORT0_MODE       (OPT_MODE_DEVICE | OPT_MODE_HIGH_SPEED)
+#else
+#define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE
+#endif
+
+#define CFG_TUSB_OS                 OPT_OS_NONE
+
+// CFG_TUSB_DEBUG is defined by compiler in DEBUG build
+// #define CFG_TUSB_DEBUG           0
+
+/* USB DMA on some MCUs can only access a specific SRAM region with restriction on alignment.
+ * Tinyusb use follows macros to declare transferring memory so that they can be put
+ * into those specific section.
+ * e.g
+ * - CFG_TUSB_MEM SECTION : __attribute__ (( section(".usb_ram") ))
+ * - CFG_TUSB_MEM_ALIGN   : __attribute__ ((aligned(4)))
+ */
+#ifndef CFG_TUSB_MEM_SECTION
+#define CFG_TUSB_MEM_SECTION
+#endif
+
+#ifndef CFG_TUSB_MEM_ALIGN
+#define CFG_TUSB_MEM_ALIGN          __attribute__ ((aligned(4)))
+#endif
+
+//--------------------------------------------------------------------
+// DEVICE CONFIGURATION
+//--------------------------------------------------------------------
+
+#define CFG_TUD_ENDOINT0_SIZE     64
+
+//------------- CLASS -------------//
+#define CFG_TUD_CDC               1
+#define CFG_TUD_MSC               0
+#define CFG_TUD_HID               0
+#define CFG_TUD_MIDI              0
+#define CFG_TUD_VENDOR            1
+
+// CDC FIFO size of TX and RX
+#define CFG_TUD_CDC_RX_BUFSIZE    64
+#define CFG_TUD_CDC_TX_BUFSIZE    64
+
+// Vendor FIFO size of TX and RX
+// If not configured vendor endpoints will not be buffered
+#define CFG_TUD_VENDOR_RX_BUFSIZE 64
+#define CFG_TUD_VENDOR_TX_BUFSIZE 64
+
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* _TUSB_CONFIG_H_ */
diff --git a/examples/device/webusb_serial/src/usb_descriptors.c b/examples/device/webusb_serial/src/usb_descriptors.c
new file mode 100644
index 000000000..a61c62c93
--- /dev/null
+++ b/examples/device/webusb_serial/src/usb_descriptors.c
@@ -0,0 +1,237 @@
+/* 
+ * 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.
+ *
+ */
+
+#include "tusb.h"
+#include "usb_descriptors.h"
+
+/* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug.
+ * Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC.
+ *
+ * Auto ProductID layout's Bitmap:
+ *   [MSB]       MIDI | HID | MSC | CDC          [LSB]
+ */
+#define _PID_MAP(itf, n)  ( (CFG_TUD_##itf) << (n) )
+#define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \
+                           _PID_MAP(MIDI, 3) | _PID_MAP(VENDOR, 4) )
+
+//--------------------------------------------------------------------+
+// Device Descriptors
+//--------------------------------------------------------------------+
+tusb_desc_device_t const desc_device =
+{
+    .bLength            = sizeof(tusb_desc_device_t),
+    .bDescriptorType    = TUSB_DESC_DEVICE,
+    .bcdUSB             = 0x0210, // at least 2.1 or 3.x for BOS & webUSB
+
+    // Use Interface Association Descriptor (IAD) for CDC
+    // As required by USB Specs IAD's subclass must be common class (2) and protocol must be IAD (1)
+    .bDeviceClass       = TUSB_CLASS_MISC,
+    .bDeviceSubClass    = MISC_SUBCLASS_COMMON,
+    .bDeviceProtocol    = MISC_PROTOCOL_IAD,
+    .bMaxPacketSize0    = CFG_TUD_ENDOINT0_SIZE,
+
+    .idVendor           = 0xCafe,
+    .idProduct          = USB_PID,
+    .bcdDevice          = 0x0100,
+
+    .iManufacturer      = 0x01,
+    .iProduct           = 0x02,
+    .iSerialNumber      = 0x03,
+
+    .bNumConfigurations = 0x01
+};
+
+// Invoked when received GET DEVICE DESCRIPTOR
+// Application return pointer to descriptor
+uint8_t const * tud_descriptor_device_cb(void)
+{
+  return (uint8_t const *) &desc_device;
+}
+
+//--------------------------------------------------------------------+
+// Configuration Descriptor
+//--------------------------------------------------------------------+
+enum
+{
+  ITF_NUM_CDC = 0,
+  ITF_NUM_CDC_DATA,
+  ITF_NUM_VENDOR,
+  ITF_NUM_TOTAL
+};
+
+#define CONFIG_TOTAL_LEN    (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN + TUD_VENDOR_DESC_LEN)
+
+#if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX
+  // LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number
+  // 0 control, 1 In, 2 Bulk, 3 Iso, 4 In etc ...
+  #define EPNUM_CDC     2
+  #define EPNUM_VENDOR  5
+#else
+  #define EPNUM_CDC     2
+  #define EPNUM_VENDOR  3
+#endif
+
+uint8_t const desc_configuration[] =
+{
+  // Interface count, string index, total length, attribute, power in mA
+  TUD_CONFIG_DESCRIPTOR(ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100),
+
+  // Interface number, string index, EP notification address and size, EP data address (out, in) and size.
+  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 4, 0x81, 8, EPNUM_CDC, 0x80 | EPNUM_CDC, 64),
+
+  // Interface number, string index, EP Out & IN address, EP size
+  TUD_VENDOR_DESCRIPTOR(ITF_NUM_VENDOR, 5, EPNUM_VENDOR, 0x80 | EPNUM_VENDOR, 64)
+};
+
+// Invoked when received GET CONFIGURATION DESCRIPTOR
+// Application return pointer to descriptor
+// Descriptor contents must exist long enough for transfer to complete
+uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
+{
+  (void) index; // for multiple configurations
+  return desc_configuration;
+}
+
+//--------------------------------------------------------------------+
+// BOS Descriptor
+//--------------------------------------------------------------------+
+
+/* Microsoft OS 2.0 registry property descriptor
+Per MS requirements https://msdn.microsoft.com/en-us/library/windows/hardware/hh450799(v=vs.85).aspx
+device should create DeviceInterfaceGUIDs. It can be done by driver and
+in case of real PnP solution device should expose MS "Microsoft OS 2.0
+registry property descriptor". Such descriptor can insert any record
+into Windows registry per device/configuration/interface. In our case it
+will insert "DeviceInterfaceGUIDs" multistring property.
+
+GUID is freshly generated and should be OK to use.
+
+https://developers.google.com/web/fundamentals/native-hardware/build-for-webusb/
+(Section Microsoft OS compatibility descriptors)
+*/
+
+#define BOS_TOTAL_LEN      (TUD_BOS_DESC_LEN + TUD_BOS_WEBUSB_DESC_LEN + TUD_BOS_MICROSOFT_OS_DESC_LEN)
+
+#define MS_OS_20_DESC_LEN  0xB2
+
+// BOS Descriptor is required for webUSB
+uint8_t const desc_bos[] =
+{
+  // total length, number of device caps
+  TUD_BOS_DESCRIPTOR(BOS_TOTAL_LEN, 2),
+
+  // Vendor Code, iLandingPage
+  TUD_BOS_WEBUSB_DESCRIPTOR(VENDOR_REQUEST_WEBUSB, 1),
+
+  // Microsoft OS 2.0 descriptor
+  TUD_BOS_MS_OS_20_DESCRIPTOR(MS_OS_20_DESC_LEN, VENDOR_REQUEST_MICROSOFT)
+};
+
+uint8_t const * tud_descriptor_bos_cb(void)
+{
+  return desc_bos;
+}
+
+
+uint8_t const desc_ms_os_20[] =
+{
+  // Set header: length, type, windows version, total length
+  U16_TO_U8S_LE(0x000A), U16_TO_U8S_LE(MS_OS_20_SET_HEADER_DESCRIPTOR), U32_TO_U8S_LE(0x06030000), U16_TO_U8S_LE(MS_OS_20_DESC_LEN),
+
+  // Configuration subset header: length, type, configuration index, reserved, configuration total length
+  U16_TO_U8S_LE(0x0008), U16_TO_U8S_LE(MS_OS_20_SUBSET_HEADER_CONFIGURATION), 0, 0, U16_TO_U8S_LE(MS_OS_20_DESC_LEN-0x0A),
+
+  // Function Subset header: length, type, first interface, reserved, subset length
+  U16_TO_U8S_LE(0x0008), U16_TO_U8S_LE(MS_OS_20_SUBSET_HEADER_FUNCTION), ITF_NUM_VENDOR, 0, U16_TO_U8S_LE(MS_OS_20_DESC_LEN-0x0A-0x08),
+
+  // MS OS 2.0 Compatible ID descriptor: length, type, compatible ID, sub compatible ID
+  U16_TO_U8S_LE(0x0014), U16_TO_U8S_LE(MS_OS_20_FEATURE_COMPATBLE_ID), 'W', 'I', 'N', 'U', 'S', 'B', 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // sub-compatible
+
+  // MS OS 2.0 Registry property descriptor: length, type
+  U16_TO_U8S_LE(MS_OS_20_DESC_LEN-0x0A-0x08-0x08-0x14), U16_TO_U8S_LE(MS_OS_20_FEATURE_REG_PROPERTY),
+  U16_TO_U8S_LE(0x0007), U16_TO_U8S_LE(0x002A), // wPropertyDataType, wPropertyNameLength and PropertyName "DeviceInterfaceGUIDs\0" in UTF-16
+  'D', 0x00, 'e', 0x00, 'v', 0x00, 'i', 0x00, 'c', 0x00, 'e', 0x00, 'I', 0x00, 'n', 0x00, 't', 0x00, 'e', 0x00,
+  'r', 0x00, 'f', 0x00, 'a', 0x00, 'c', 0x00, 'e', 0x00, 'G', 0x00, 'U', 0x00, 'I', 0x00, 'D', 0x00, 's', 0x00, 0x00, 0x00,
+  U16_TO_U8S_LE(0x0050), // wPropertyDataLength
+	//bPropertyData: “{975F44D9-0D08-43FD-8B3E-127CA8AFFF9D}”.
+  '{', 0x00, '9', 0x00, '7', 0x00, '5', 0x00, 'F', 0x00, '4', 0x00, '4', 0x00, 'D', 0x00, '9', 0x00, '-', 0x00,
+  '0', 0x00, 'D', 0x00, '0', 0x00, '8', 0x00, '-', 0x00, '4', 0x00, '3', 0x00, 'F', 0x00, 'D', 0x00, '-', 0x00,
+  '8', 0x00, 'B', 0x00, '3', 0x00, 'E', 0x00, '-', 0x00, '1', 0x00, '2', 0x00, '7', 0x00, 'C', 0x00, 'A', 0x00,
+  '8', 0x00, 'A', 0x00, 'F', 0x00, 'F', 0x00, 'F', 0x00, '9', 0x00, 'D', 0x00, '}', 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+TU_VERIFY_STATIC(sizeof(desc_ms_os_20) == MS_OS_20_DESC_LEN, "Incorrect size");
+
+//--------------------------------------------------------------------+
+// String Descriptors
+//--------------------------------------------------------------------+
+
+// array of pointer to string descriptors
+char const* string_desc_arr [] =
+{
+  (const char[]) { 0x09, 0x04 }, // 0: is supported language is English (0x0409)
+  "TinyUSB",                     // 1: Manufacturer
+  "TinyUSB Device",              // 2: Product
+  "123456",                      // 3: Serials, should use chip ID
+  "TinyUSB CDC",                 // 4: CDC Interface
+  "TinyUSB WebUSB"               // 5: Vendor Interface
+};
+
+static uint16_t _desc_str[32];
+
+// Invoked when received GET STRING DESCRIPTOR request
+// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
+uint16_t const* tud_descriptor_string_cb(uint8_t index)
+{
+  uint8_t chr_count;
+
+  if ( index == 0)
+  {
+    memcpy(&_desc_str[1], string_desc_arr[0], 2);
+    chr_count = 1;
+  }else
+  {
+    // Convert ASCII string into UTF-16
+
+    if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return NULL;
+
+    const char* str = string_desc_arr[index];
+
+    // Cap at max char
+    chr_count = strlen(str);
+    if ( chr_count > 31 ) chr_count = 31;
+
+    for(uint8_t i=0; i<chr_count; i++)
+    {
+      _desc_str[1+i] = str[i];
+    }
+  }
+
+  // first byte is len, second byte is string type
+  _desc_str[0] = TUD_DESC_STR_HEADER(chr_count);
+
+  return _desc_str;
+}
diff --git a/examples/device/webusb_serial/src/usb_descriptors.h b/examples/device/webusb_serial/src/usb_descriptors.h
new file mode 100644
index 000000000..19f1ff3f3
--- /dev/null
+++ b/examples/device/webusb_serial/src/usb_descriptors.h
@@ -0,0 +1,36 @@
+/* 
+ * 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.
+ */
+
+#ifndef USB_DESCRIPTORS_H_
+#define USB_DESCRIPTORS_H_
+
+enum
+{
+  VENDOR_REQUEST_WEBUSB = 1,
+  VENDOR_REQUEST_MICROSOFT = 2
+};
+
+extern uint8_t const desc_ms_os_20[];
+
+#endif /* USB_DESCRIPTORS_H_ */