labview与STM32的USB通信

NUAA-DW · 发表于 2016-6-7 23:12:15

本帖最后由 NUAA-DW 于 2016-6-7 23:14 编辑

STM32自定义USB设备，有人做过这种吗？速率可以达到多少？NI-VISA生成的INF文件，能读到数据。但是速率只有11K。为什么？
[mw_shl_code=c,true]const uint8_t Virtual_Com_Port_DeviceDescriptor[] =
  {
0x12,                      /*bLength */
USB_DEVICE_DESCRIPTOR_TYPE, /*bDescriptorType*/
0x00,                      /*bcdUSB */
0x02,

0x00,                      /*bDeviceClass*/
0x00,                      /*bDeviceSubClass*/
0x00,                      /*bDeviceProtocol*/

0x40,                      /*bMaxPacketSize40*/
0x83,                      /*idVendor (0x0483)*/
0x04,
0x50,                      /*idProduct = 0x5750*/
0x57,
0x00,                      /*bcdDevice rel. 2.00*/
0x02,
1,                         /*Index of string descriptor describing
                                          manufacturer */
2,                         /*Index of string descriptor describing
                                          product*/
0,                         /*Index of string descriptor describing the
                                          device serial number */
0x01                      /*bNumConfigurations*/
  };

const uint8_t Virtual_Com_Port_ConfigDescriptor[] =
  {
0x09, /* bLength: Configuation Descriptor size */    //ÅäÖÃÃèêö·û
USB_CONFIGURATION_DESCRIPTOR_TYPE, /* bDescriptorType: Configuration */
32,
/* wTotalLength: Bytes returned */
0x00,
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: this current is used for detecting Vbus */

/************** Descriptor of Custom HID interface ****************/  //½ó¿úÃèêö·û
/* 09 */
0x09,       /* bLength: Interface Descriptor size */
USB_INTERFACE_DESCRIPTOR_TYPE,/* bDescriptorType: Interface descriptor type */
0x00,       /* bInterfaceNumber: Number of Interface */
0x00,       /* bAlternateSetting: Alternate setting */
0x02,       /* bNumEndpoints */

0xff,       /* 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 endpoints ******************/ //¶ËμãÃèêö·û
/* 27 */
0x07,       /* bLength: Endpoint Descriptor size */
USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: */
0x81,       /* bEndpointAddress: Endpoint Address (IN) */
0x02,       /* bmAttributes: Interrupt endpoint */
0x40,       /* wMaxPacketSize: 96 Bytes max */
0x00,
0x00,       /* bInterval: Polling Interval (32 ms) */
/******************** Descriptor of Custom HID endpoints ******************/ //¶ËμãÃèêö·û
/* 27 */
0x07,       /* bLength: Endpoint Descriptor size */
USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: */
0x03,       /* bEndpointAddress: Endpoint Address (IN) */
0x02,       /* bmAttributes: Bulk endpoint */
0x40,       /* wMaxPacketSize: 96 Bytes max */
0x00,
0x00       /* bInterval: Polling Interval (32 ms) */

  };[/mw_shl_code]