Ejemplo n.º 1
0
//*****************************************************************************
//
//! This function is used to initialize a mouse interface after a mouse has
//! been detected.
//!
//! \param ulInstance is the instance value for this mouse.
//!
//! This function should be called after receiving a \b USB_EVENT_CONNECTED
//! event in the callback function provided by USBHMouseOpen(), however it
//! should only be called outside of the callback function.  This will
//! initialize the mouse interface and determine how it reports events to the
//! USB host controller.  The \e ulInstance value is the value that was
//! returned when the application called USBHMouseOpen().  This function only
//! needs to be called once per connection event but it should be called every
//! time a \b USB_EVENT_CONNECTED event occurs.
//!
//! \return Non-zero values should be assumed to indicate an error condition.
//
//*****************************************************************************
unsigned long
USBHMouseInit(unsigned long ulInstance)
{
    tUSBHMouse *pUSBHMouse;

    //
    // Recover the pointer to the instance data.
    //
    pUSBHMouse = (tUSBHMouse *)ulInstance;

    //
    // Set the initial rate to only update on mouse state changes.
    //
    USBHHIDSetIdle(pUSBHMouse->ulMouseInstance, 0, 0);

    //
    // Read out the Report Descriptor from the mouse and parse it for
    // the format of the reports coming back from the mouse.
    //
    USBHHIDGetReportDescriptor(pUSBHMouse->ulMouseInstance,
                               pUSBHMouse->pucHeap,
                               pUSBHMouse->ulHeapSize);

    //
    // Set the mouse to boot protocol.
    //
    USBHHIDSetProtocol(pUSBHMouse->ulMouseInstance, 1);

    return(0);
}
Ejemplo n.º 2
0
//*****************************************************************************
//
//! This function is used to initialize a mouse interface after a mouse has
//! been detected.
//!
//! \param psMsInstance is the instance value for this mouse.
//!
//! This function should be called after receiving a \b USB_EVENT_CONNECTED
//! event in the callback function provided by USBHMouseOpen(), however it
//! should only be called outside of the callback function.  This will
//! initialize the mouse interface and determine how it reports events to the
//! USB host controller.  The \e psMsInstance value is the value that was
//! returned when the application called USBHMouseOpen().  This function only
//! needs to be called once per connection event but it should be called every
//! time a \b USB_EVENT_CONNECTED event occurs.
//!
//! \return Non-zero values should be assumed to indicate an error condition.
//
//*****************************************************************************
uint32_t
USBHMouseInit(tUSBHMouse *psMsInstance)
{
    //
    // Set the initial rate to only update on mouse state changes.
    //
    USBHHIDSetIdle(psMsInstance->psHIDInstance, 0, 0);

    //
    // Read out the Report Descriptor from the mouse and parse it for
    // the format of the reports coming back from the mouse.
    //
    USBHHIDGetReportDescriptor(psMsInstance->psHIDInstance,
                               psMsInstance->pui8Heap,
                               psMsInstance->ui32HeapSize);

    //
    // Set the mouse to boot protocol.
    //
    USBHHIDSetProtocol(psMsInstance->psHIDInstance, 1);

    return(0);
}