コード例 #1
0
ファイル: usbhhidmouse.c プロジェクト: azim1866/ECE5770
//*****************************************************************************
//
//! This function is used open an instance of a mouse.
//!
//! \param pfnCallback is the callback function to call when new events occur
//! with the mouse returned.
//! \param pui8Buffer is the memory used by the driver to interact with the
//! USB mouse.
//! \param ui32Size is the size of the buffer provided by \e pui8Buffer.
//!
//! This function is used to open an instance of the mouse.  The value
//! returned from this function should be used as the instance identifier for
//! all other USBHMouse calls.  The \e pui8Buffer memory buffer is used to
//! access the mouse.  The buffer size required is at least enough to hold
//! a normal report descriptor for the device.
//!
//! \return Returns the instance identifier for the mouse that is attached.
//! If there is no mouse present this will return 0.
//
//*****************************************************************************
tUSBHMouse *
USBHMouseOpen(tUSBHIDMouseCallback pfnCallback, uint8_t *pui8Buffer,
              uint32_t ui32Size)
{
    //
    // Save the callback and data pointers.
    //
    g_sUSBHMouse.pfnCallback = pfnCallback;

    //
    // Save the instance pointer for the HID device that was opened.
    //
    g_sUSBHMouse.psHIDInstance = USBHHIDOpen(eUSBHHIDClassMouse,
                                             USBHMouseCallback,
                                             (void *)&g_sUSBHMouse);

    //
    // Save the heap buffer and size.
    //
    g_sUSBHMouse.pui8Heap = pui8Buffer;
    g_sUSBHMouse.ui32HeapSize = ui32Size;

    return(&g_sUSBHMouse);
}
コード例 #2
0
//*****************************************************************************
//
//! This function is used open an instance of a mouse.
//!
//! \param pfnCallback is the callback function to call when new events occur
//! with the mouse returned.
//! \param pucBuffer is the memory used by the driver to interact with the
//! USB mouse.
//! \param ulSize is the size of the buffer provided by \e pucBuffer.
//!
//! This function is used to open an instance of the mouse.  The value
//! returned from this function should be used as the instance identifier for
//! all other USBHMouse calls.  The \e pucBuffer memory buffer is used to
//! access the mouse.  The buffer size required is at least enough to hold
//! a normal report descriptor for the device.
//!
//! \return Returns the instance identifier for the mouse that is attached.
//! If there is no mouse present this will return 0.
//
//*****************************************************************************
unsigned long
USBHMouseOpen(tUSBCallback pfnCallback, unsigned char *pucBuffer,
              unsigned long ulSize)
{
    //
    // Save the callback and data pointers.
    //
    g_sUSBHMouse.pfnCallback = pfnCallback;

    //
    // Save the instance pointer for the HID device that was opened.
    //
    g_sUSBHMouse.ulMouseInstance = USBHHIDOpen(USBH_HID_DEV_MOUSE,
                                               USBHMouseCallback,
                                               (unsigned long)&g_sUSBHMouse);

    //
    // Save the heap buffer and size.
    //
    g_sUSBHMouse.pucHeap = pucBuffer;
    g_sUSBHMouse.ulHeapSize = ulSize;

    return((unsigned long)&g_sUSBHMouse);
}