目前使用 TJvhiddeviceController 做USB HID , 也可以通訊了,如果想要同時接數個HID裝置,要如何做呢?


__fastcall TDevInThread::TDevInThread(TJvHidDevice *MyDev) : TThread(False)
{
Dev = MyDev; // Initialize variables.
}
//---------------------------------------------------------------------------
void __fastcall TDevInThread::HandleReport(void)
{
MainForm->ShowInputReport(); // Show input report.
}
//---------------------------------------------------------------------------
void __fastcall TDevInThread::Execute(void)
{
DWORD dwRetVal;
dwRetVal = WAIT_IO_COMPLETION;
while(!Terminated)
{
// Read input report.
if(!Dev->ReadFileEx(&Report, Dev->Caps.InputReportByteLength, &OvDummy))
break;
// Wait read to complete.
do{
dwRetVal = SleepEx(100, true);
}while(!Terminated && (dwRetVal != WAIT_IO_COMPLETION));
// Handle input report.
if(!Terminated)
{
dwReportLen = Dev->HidOverlappedReadResult;
Synchronize(HandleReport);
}
}
// Cancel pending read.
if(dwRetVal != WAIT_IO_COMPLETION)
Dev->CancelIO(omhRead);
}
void __fastcall TMainForm::USBHidCtlDeviceChange(TObject *Sender)
{
int i;
if(DevList == NULL) // Create device list.
DevList = new TList();
else
{
for(i=0;iCount;i ) // Free all device list entries.
((TJvHidDevice *)DevList->Items[i])->Free();
DevList->Clear(); // Clear device list.
}
// StateMemo->Clear(); // Clear device list box.
USBHidCtl->Enumerate(); // Enumerate all USB HID devices.
}
//---------------------------------------------------------------------------
bool __fastcall TMainForm::USBHidCtlEnumerate(TJvHidDevice *HidDev,
const int Idx)
{
if((HidDev->Attributes.VendorID == 0x0483) && (HidDev->Attributes.ProductID == 0x5750))
{
MainForm->USBFindTimer->Enabled = false;
MainForm->USBDevTimer->Enabled = true;
Port_OPEN = true;
MainForm->Image1->Visible = false;
MainForm->Image2->Visible = true;
USB_Num = Idx;
}
else
{
MainForm->USBFindTimer->Enabled = true;
Port_OPEN = false;
// MainForm->Image1->Visible = true;
// MainForm->Image2->Visible = false;
}
TJvHidDevice *Dev;
USBHidCtl->CheckOutByIndex(Dev, Idx);
DevList->Add(Dev); // Add device to device list.
return true;
}
//---------------------------------------------------------------------------
void __fastcall TMainForm::USBDevTimerTimer(TObject *Sender)
{
MainForm->USBDevTimer->Enabled = false;
TJvHidDevice *Dev = (TJvHidDevice *)DevList->Items[USB_Num];
DevInThread = new TDevInThread((TJvHidDevice *)DevList->Items[USB_Num]); // Create device input thread.
}
//---------------------------------------------------------------------------
void __fastcall TMainForm::ShowInputReport(void)
{
for(DWORD i = 0; i < DevInThread->dwReportLen; i )
Buffer_tmp[i] = DevInThread->Report.bData[i];
if(Buffer_tmp[0] == 'O' && Buffer_tmp[1] == 'K')
CMD_Flag = true;
}
以上是目前有使用的程式,請問要如何修改?

謝謝.