DirectIOCtrl方式

2万 · 2015-2-26 20:37

Cypress CyUsb.sys用DirectIOCtrl方式
获得Enpoint address

2万 · 2015-2-26 20:37

还有MaxPktSize

2万 · 2015-2-26 20:38

CyUsb.chm上没有介绍吗？

2万 · 2015-2-26 20:39

貌视没有啊

2万 · 2015-2-26 20:41

在CyAPI.chm中的CCyUSBEndPoint有关于Endpoint Address和MaxPacketSize说明

Description

Address contains the value of the bEndpointAddress field of the endpoint descriptor returned by the device.

Addresses with the high-order bit set (0x8_) are IN endpoints.

Addresses with the high-order bit cleared (0x0_) are OUT endpoints.

The default control endpoint (ControlEndPt) has Address = 0.

Example

  //  Find a second bulk IN endpoint in the EndPoints[] array

  CCyUSBDevice  *USBDevice = new  CCyUSBDevice(Handle);

  CCyBulkEndPoint *BulkIn2 = NULL;

  int eptCount = USBDevice->EndPointCount();

  for  (int  i=1; i<eptCount;  i++) {
   bool  bIn = USBDevice->EndPoints->Address & 0x80;
   bool  bBulk = (USBDevice->EndPoints->Attributes == 2);

   if (bBulk  && bIn) BulkIn2 = (CCyBulkEndPoint *) USBDevice->EndPoints;
   if (BulkIn2 == BulkInEndPt) BulkIn2 = NULL;
}