update VID/PID/serial

CMakeLists.txt

@@ -48,6 +48,7 @@ target_link_libraries(${PROJECT}
 	pico_stdlib
 	pico_multicore
 	pico_mbedtls
+	tinyusb_board
 	tinyusb_device
 )
 

usb_descriptors.c

@@ -25,20 +25,10 @@
  */
 
 #include "tusb.h"
+#include "bsp/board_api.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]         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) )
-
-#define USB_VID   0xCafe
-#define USB_BCD   0x0200
 
 //--------------------------------------------------------------------+
 // Device Descriptors
@@ -80,13 +70,6 @@ uint8_t const * tud_descriptor_device_cb(void)
 // Configuration Descriptor
 //--------------------------------------------------------------------+
 
-#define EPNUM_CDC_NOTIF	0x81
-#define EPNUM_CDC_OUT	0x02
-#define EPNUM_CDC_IN	0x82
-#define EPNUM_HID		0x83
-
-#define CONFIG_TOTAL_LEN    (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN + TUD_HID_DESC_LEN)
-
 uint8_t const desc_hid_report[] =
 {
 	TUD_HID_REPORT_DESC_KEYBOARD( HID_REPORT_ID(REPORT_ID_KEYBOARD)),
@@ -126,12 +109,10 @@ char const* string_desc_arr [] =
 	(const char[]) { 0x09, 0x04 },	// 0: is supported language is English (0x0409)
 	"Raspberry Pi",					// 1: Manufacturer
 	"Pico Web Keyboard",			// 2: Product
-  "1234567890123456789",         // 3: Serials, should use chip ID
-  "Pico Web Keyboard CDC",       // 4: CDC Interface
-  "Pico Web Keyboard HID",       // 5: HID Keyboard Interface
+	NULL,					        // 3: Serials, should use chip ID
 };
 
-static uint16_t _desc_str[32];
+static uint16_t _desc_str[32+1];
 
 // Invoked when received GET STRING DESCRIPTOR request
 // Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
@@ -141,28 +122,31 @@ uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 
 	uint8_t chr_count;
 
-  if ( index == 0)
-  {
+	switch (index) {
+		case 0: // langid
 			memcpy(&_desc_str[1], string_desc_arr[0], 2);
 			chr_count = 1;
-  }else
-  {
+			break;
+		case 3: // serial
+			chr_count = board_usb_get_serial(_desc_str+1, 32);	
+			break;
+		default:
 			// Note: the 0xEE index string is a Microsoft OS 1.0 Descriptors.
 			// https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/microsoft-defined-usb-descriptors
 
 			if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return NULL;
 
-    const char* str = string_desc_arr[index];
+			char* str = string_desc_arr[index];
 
 			// Cap at max char
 			chr_count = (uint8_t) strlen(str);
 			if ( chr_count > 31 ) chr_count = 31;
 
 			// Convert ASCII string into UTF-16
-    for(uint8_t i=0; i<chr_count; i++)
-    {
+			for(uint8_t i=0; i<chr_count; i++) {
 				_desc_str[1+i] = str[i];
 			}
+			break;
 	}
 
 	// first byte is length (including header), second byte is string type
@@ -171,7 +155,6 @@ uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 	return _desc_str;
 }
 
-
 //--------------------------------------------------------------------+
 // Device HID
 //--------------------------------------------------------------------+

usb_descriptors.h

@@ -41,5 +41,15 @@ enum
 	ITF_NUM_TOTAL
 };
 
+#define USB_PID		0x0ebd
+#define USB_VID		0xCEC0
+#define USB_BCD		0x0200
+
+#define EPNUM_CDC_NOTIF	0x81
+#define EPNUM_CDC_OUT	0x02
+#define EPNUM_CDC_IN	0x82
+#define EPNUM_HID		0x83
+
+#define CONFIG_TOTAL_LEN    (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN + TUD_HID_DESC_LEN)
 
 #endif /* USB_DESCRIPTORS_H_ */