//------------------------------------------------------------------------
// Open()
//
// dwDevice : position of device description string in the registry
//
// Get the description strings for a device and copy the linkname into
// m_DeviceName. Call OpenUSBfile() to create the file handle.
//------------------------------------------------------------------------
HANDLE CUsbIF::Open(DWORD dwDevice)
{
CDeviceListEntry dev;
GetDeviceStrings(dwDevice, dev);
// first set the device by setting the devicename
strcpy(m_DeviceName, dev.m_linkname.c_str());
// next get a handle and return it
return OpenUSBfile(NULL);
}
/**************************************************************************//**
* @brief main - the entrypoint after reset.
*****************************************************************************/
int main(void)
{
int connectionResult;
USBH_Init_TypeDef is = USBH_INIT_DEFAULT;
BSP_Init(BSP_INIT_DEFAULT); /* Initialize DK board register access */
/* If first word of user data page is non-zero, enable eA Profiler trace */
BSP_TraceProfilerSetup();
CMU_ClockSelectSet(cmuClock_HF, cmuSelect_HFXO);
ConsoleDebugInit(); /* Initialize DK UART port. */
printf("\n\nEFM32 USB Host device enumeration example.\n");
USBH_Init(&is); /* Initialize USB HOST stack */
for (;;)
{
/* Wait for device connection */
printf("\nWaiting for USB device plug-in...\n");
/* Wait for maximum 10 seconds. */
connectionResult = USBH_WaitForDeviceConnectionB( tmpBuf, 10 );
if ( connectionResult == USB_STATUS_OK )
{
printf("\nA device was attached...\n");
if (USBH_QueryDeviceB(tmpBuf, sizeof(tmpBuf), USBH_GetPortSpeed())
== USB_STATUS_OK)
{
USBH_InitDeviceData(&device, tmpBuf, NULL, 0, USBH_GetPortSpeed());
printf( "\nDevice VID/PID is 0x%04X/0x%04X, device bus speed is %s",
device.devDesc.idVendor, device.devDesc.idProduct,
USBH_GetPortSpeed() == PORT_FULL_SPEED ? "FULL" : "LOW" );
GetDeviceStrings();
}
else
{
printf("\nDevice enumeration failure, please unplug device...\n");
}
while ( USBH_DeviceConnected() ){}
printf("\n\nDevice removal detected...");
}
else if ( connectionResult == USB_STATUS_DEVICE_MALFUNCTION )
{
printf("\nA malfunctioning device was attached, please remove...\n");
}
else if ( connectionResult == USB_STATUS_PORT_OVERCURRENT )
{
printf( "\nVBUS overcurrent condition, please remove device.\n" );
}
else if ( connectionResult == USB_STATUS_TIMEOUT )
{
printf("\nNo device was attached...\n");
}
USBH_Stop();
}
}
