HANDLE
open_dev()
/*++
Routine Description:
Called by dumpUsbConfig() to open an instance of our device
Arguments:
None
Return Value:
Device handle on success else NULL
--*/
{
HANDLE hDEV = OpenUsbDevice( (LPGUID)&GUID_CLASS_USBSAMP_USB,
completeDeviceName);
if (hDEV == INVALID_HANDLE_VALUE) {
printf("Failed to open (%s) = %d", completeDeviceName, GetLastError());
} else {
printf("DeviceName = (%s)\n", completeDeviceName);
}
return hDEV;
}
BOOL
GetUsbDeviceFileName(
__in LPGUID pGuid,
__in char *outNameBuf
)
/*++
Routine Description:
Given a ptr to a driver-registered GUID, give us a string with the device name
that can be used in a CreateFile() call.
Actually briefly opens and closes the device and sets outBuf if successfull;
returns FALSE if not
Arguments:
pGuid: ptr to GUID registered by the driver itself
outNameBuf: the generated zero-terminated name for this device
Return Value:
TRUE on success else FALSE
--*/
{
HANDLE hDev = OpenUsbDevice( pGuid, outNameBuf );
if ( hDev != INVALID_HANDLE_VALUE ) {
CloseHandle( hDev );
return TRUE;
}
return FALSE;
}
int main(int argc, char* argv[])
{
PrintHello();
if (ProcessCmdLine(argc, argv) != 0)
return -1;
OpenUsbDevice();
if (dwRC == USBIO_ERR_SUCCESS)
{
GetDeviceDescriptor();
}
if (dwRC == USBIO_ERR_SUCCESS)
{
GetConfigurationDescriptor();
}
if (dwRC == USBIO_ERR_SUCCESS)
{
GetStringDescriptor();
}
if (dwRC == USBIO_ERR_SUCCESS)
{
SetConfiguration();
}
if (dwRC == USBIO_ERR_SUCCESS)
{
// In order to give the USB device-side program (t_usb)
// enough time after getting configured to carry out
// some device tests, we wait here for a short while
// before proceeding:
Delay(2000);
GetConfigurationInfo();
}
if (dwRC == USBIO_ERR_SUCCESS)
{
OpenPipes();
}
if (dwRC == USBIO_ERR_SUCCESS)
{
ExchangeVersions();
}
if (dwRC == USBIO_ERR_SUCCESS)
{
DoTransfers();
}
if (dwRC == USBIO_ERR_SUCCESS)
{
ClosePipes();
}
CloseUsbDevice();
return 0;
}
/*
This�entry�is�called each�time�the�user�specifies�that�the�audio�data�input should be received
through�the�hardware�managed�by�this�DLL�or,�if�still�using�the�sound�card�for�this,�that�the�
DLL�must�activate�control�of�the�external�hardware.�It�can�be�used�by�the�DLL�itself�for�delayed
init�tasks,�like,�e.g.,�the�display�of�its�own�GUI,�if�the�DLL�has�one.�
*/
bool DLL OpenHW(void)
{
// Find the busses and devices on the USB connection.
usb_init();
usb_find_busses();
usb_find_devices();
// Find the usb device and open it.
handle = OpenUsbDevice(I2C_TINY_USB_VID, I2C_TINY_USB_PID);
if (handle != null)
{
SI5351_Init();
SI5351_OutputDisable(0);
SI5351_OutputDisable(1);
m_outputEnabled = false;
}
return (handle != null);
}
