项目紧急，请教香主以及各位高手关于U盘模拟CDROM问题！

只看该作者 · 2010-11-1 22:56

本帖最后由 abin_gha 于 2010-11-1 23:50 编辑

项目需要实现CDROM+HID功能，主芯片为STM32F103RC，U盘存储器使用的是TFlash卡，目前已经实现了U盘+HID功能。通过修改Scsi_data.c文件中的Standard_Inquiry_Data如下，修改完后，PC机能够看到CD-ROM，但是双击cdrom后，无法打开，弹出一个错误提示框，如附件。请大家指点，多谢啦！
uint8_t Standard_Inquiry_Data[] =
  {
#if 0
0x00,       /* Direct Access Device */
#else
0x05,       /* Direct Access Device  CDROM*/
#endif
0x80,       /* RMB = 1: Removable Medium */
0x02,       /* Version: No conformance claim to standard */
0x02,

36 - 4,       /* Additional Length */
#if 0
0x00,       /* SCCS = 1: Storage Controller Component */
#else
  0x01,       /* SCCS = 1: Storage Controller Component */
#endif
0x00,
0x00,
/* Vendor Identification */
'S', 'T', 'M', ' ', ' ', ' ', ' ', ' ',
/* Product Identification */
'S', 'D', ' ', 'F', 'l', 'a', 's', 'h', ' ',
'D', 'i', 's', 'k', ' ', ' ', ' ',
/* Product Revision Level */
'1', '.', '0', ' '
}

另外，配置描述符为：
const uint8_t MASS_ConfigDescriptor[MASS_SIZ_CONFIG_DESC] =
  {

0x09, /* bLength: Configuation Descriptor size */
0x02, /* bDescriptorType: Configuration */
MASS_SIZ_CONFIG_DESC,

0x00,
0x02, //0x01, /* bNumInterfaces: 1 interface */
0x01, /* bConfigurationValue: */
/*    Configuration value */
0x00, /* iConfiguration: */
/*    Index of string descriptor */
/*    describing the configuration */
0xC0, /* bmAttributes: */
/*    bus powered */
0x32, /* MaxPower 100 mA */

/*09*/

/************** Descriptor of Custom HID interface ****************/
0x09,       /* bLength: Interface Descriptor size */
0x04,/* bDescriptorType: Interface descriptor type */
0x00,       /* bInterfaceNumber: Number of Interface */
0x00,       /* bAlternateSetting: Alternate setting */
0x02,       //??/* bNumEndpoints */
0x03,       /* bInterfaceClass: HID */
0x00,       /* bInterfaceSubClass : 1=BOOT, 0=no boot */
0x00,       /* nInterfaceProtocol : 0=none, 1=keyboard, 2=mouse */
0,          /* iInterface: Index of string descriptor */
/******************** Descriptor of Custom HID HID ********************/
/* 18 */
0x09,       /* bLength: HID Descriptor size */
HID_DESCRIPTOR_TYPE, /* bDescriptorType: HID */
0x10,       /* bcdHID: HID Class Spec release number */
0x01,
0x00,       /* bCountryCode: Hardware target country */
0x01,       /* bNumDescriptors: Number of HID class descriptors to follow */
0x22,    //report /* bDescriptorType */
CUSTOMHID_SIZ_REPORT_DESC,/* wItemLength: Total length of Report descriptor */
0x00,
/******************** Descriptor of Custom HID endpoints ******************/
/* 27 */
0x07,       /* bLength: Endpoint Descriptor size */
0x05,//USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: */

0x82,       /* bEndpointAddress: Endpoint Address (IN) */
               // bit 3...0 : the endpoint number
               // bit 6...4 : reserved
                  // bit 7    : 0(OUT), 1(IN)
0x03,       /* bmAttributes: Interrupt endpoint */
0x40,//0x02,       /* wMaxPacketSize: 20 Bytes max */
0x00,
0x20,       /* bInterval: Polling Interval (21 ms) */
/* 34 */

0x07, /* bLength: Endpoint Descriptor size */
0x05,//USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: */
         /* Endpoint descriptor type */
0x02, /* bEndpointAddress: */
         /* Endpoint Address (OUT) */
0x03, /* bmAttributes: Interrupt endpoint */
0x40,//0x02, /* wMaxPacketSize: 20 Bytes max  */
0x00,
0x20, /* bInterval: Polling Interval (32 ms) */


/******************** Descriptor of Mass Storage interface ********************/
/*41 */
0x09, /* bLength: Interface Descriptor size */
0x04, /* bDescriptorType: */
/*    Interface descriptor type */
0x01, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x02,  /* bNumEndpoints*/
0x08, /* bInterfaceClass: MASS STORAGE Class */
0x06, /* bInterfaceSubClass : SCSI transparent*/
0x50, /* nInterfaceProtocol */
4, /* iInterface: */
/* 50 */
0x07, /*Endpoint descriptor length = 7*/
0x05, /*Endpoint descriptor type */
0x81, /*Endpoint address (IN, address 1) */
0x02, /*Bulk endpoint type */
0x40, /*Maximum packet size (64 bytes) */
0x00,
0x00, /*Polling interval in milliseconds */
/* 57 */
0x07, /*Endpoint descriptor length = 7 */
0x05, /*Endpoint descriptor type */
0x01, /*Endpoint address (OUT, address 2) */
0x02, /*Bulk endpoint type */
0x40, /*Maximum packet size (64 bytes) */
0x00,
0x00,    /*Polling interval in milliseconds*/
/*64*/
  };

  };