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USB Low-Full-High Speed Peripherals

Anonymous
Not applicable
        hello,   
   
My tast is transfer code using ezusb to cyusb. But I don't know how to do that.   
   
Example:   
bool writegpifsingleword(unsigned short da)   
{   
bool Success=0 ;   
long lLen = 2;   
unsigned long nBytes;   
if (hUsbDevice != INVALID_HANDLE_VALUE )   
{   
   
/* The old code are following:   
   
VR.direction = 0; // (0=host to device, 1=device to host)   
VR.requestType = 2;   
VR.recepient = 0;   
VR.request = VX_GPIFSINGLEWRITE;   
VR.requestTypeReservedBits = 0;   
Success = DeviceIoControl (hUsbDevice,   
IOCTL_EZUSB_VENDOR_OR_CLASS_REQUEST,   
&VR,   
sizeof(VENDOR_OR_CLASS_REQUEST_CONTROL),   
(UCHAR*)&da,   
2,   
&nBytes,   
NULL);   
*/   
// I change them to following:   
CCyUSBDevice *USBDevice = new CCyUSBDevice();   
CCyControlEndPoint *ept = USBDevice->ControlEndPt;   
   
ept->Direction = DIR_TO_DEVICE;   
ept->ReqType = REQ_VENDOR;   
ept->Target = TGT_DEVICE;   
ept->ReqCode = VX_GPIFSINGLEWRITE;   
ept->Value = 1;   
ept->Index = 0;   
   
Success = ept->Write((UCHAR*)da,lLen);   
   
return Success;   
}   
   
Is that transplant right?   
Q1: How to transfer VR.requestTypeReservedBits = 0?   
Q2: The function DeviceIoControl can return the data count after run Read or Write,   
how to get the count when I use ept->Read(buf, len), or Write, Is there some   
equivalent function can get the real transfer data count in cyusb.sys?   
Q3: ezusb there is a defination of BULK_TRANSFER_CONTROL, it can set pipenum,   
How to do it in cyusb?   
Q4: How to transfer this to cyusb:   
Success = DeviceIoControl (hUsbDevice,   
IOCTL_EZUSB_BULK_READ,   
&BR,   
sizeof(BULK_TRANSFER_CONTROL),   
inbuf,   
bc,   
&nBytes,   
NULL);   
Q5: Is following transplant right?   
bool ClearStatus()   
{   
bool Success ;   
// VENDOR_OR_CLASS_REQUEST_CONTROL VR;   
// unsigned long nBytes;   
long lLen = 0;   
if (hUsbDevice != INVALID_HANDLE_VALUE )   
{   
/*   
VR.direction = 0; // (0=host to device, 1=device to host)   
VR.requestType = 2;   
VR.recepient = 0;   
VR.request = VR_ClearStatus;   
VR.requestTypeReservedBits = 0;   
Success = DeviceIoControl (hUsbDevice,   
IOCTL_EZUSB_VENDOR_OR_CLASS_REQUEST,   
&VR,   
sizeof(VENDOR_OR_CLASS_REQUEST_CONTROL),   
NULL,   
0,   
&nBytes,   
NULL);   
*/   
}   
ept->Direction = DIR_TO_DEVICE;   
ept->ReqType = REQ_VENDOR;   
ept->Target = TGT_DEVICE;   
ept->ReqCode = VR_ClearStatus;   
ept->Write(NULL,lLen);   
   
return Success;   
}   
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