CDC serialnumber

USB‚Ì
usb_descriptors.c


›modify

const USB_DEVICE_DESCRIPTOR device_dsc=
{
    0x12,                   // Size of this descriptor in bytes
    USB_DESCRIPTOR_DEVICE,  // DEVICE descriptor type
    0x0200,                 // USB Spec Release Number in BCD format
    CDC_DEVICE,             // Class Code
    0x00,                   // Subclass code
    0x00,                   // Protocol code
    USB_EP0_BUFF_SIZE,      // Max packet size for EP0, see usb_config.h
    0x04D8,                 // Vendor ID
    0x000A,                 // Product ID: CDC RS-232 Emulation Demo
    0x0100,                 // Device release number in BCD format
    0x01,                   // Manufacturer string index
    0x02,                   // Product string index
    0x03,                   // Device serial number string indexA  <---------- from 0x00 to 0x03
    0x01                    // Number of possible configurations
};



›add

const struct{uint8_t bLength;uint8_t bDscType;uint16_t string[10];}sd003={
sizeof(sd003),USB_DESCRIPTOR_STRING,
'0','1','2','3','4','5','6','7','8','9'};

›uncomment

//Array of string descriptors
const uint8_t *const USB_SD_Ptr[USB_NUM_STRING_DESCRIPTORS]=
{
    (const uint8_t *const)&sd000,
    (const uint8_t *const)&sd001,
    (const uint8_t *const)&sd002,
    (const uint8_t *const)&sd003
    //(const uint8_t *const)&sd003  //uncomment if implementing a serial number string descriptor named sd003
};

usb_config.h

›modify
#define USB_NUM_STRING_DESCRIPTORS 4  //Set this number to match the total number of string descriptors that are implemented in the usb_descriptors.c file