Name

Each Symbian platform device driver has a name. When the driver is loaded by the user, LDDs and PDDs register themselves using a name. LDDs and PDDs have different names, which are used to identify the logical device and physical device objects.

The following shows how the example device drivers set their names:

_LIT(KDriverPddName," d_expio.pdd");

// Called while loading PDD
TInt DExH4PhysicalDevice::Install()
    {
    return SetName(&KDriverPddName);
    }

_LIT(KDriverName, " d_expio");

// Called while loading LDD
TInt DExDriverLogicalDevice::Install()
    {    
    return SetName(&KDriverName);
    }

The framework uses driver names to identify the PDDs that can be used with a given LDD. This can happen in two ways:

• The framework uses the name of the PDD factory object passed by the user while creating the logical channel. This requires a PDD with that name to be already loaded, and its factory object created. The framework searches for a PDD factory object with the specified name.

• If the user does not pass the PDD name explicitly, then the framework searches all PDD factory objects that have a name in the form of x.y, where x is the name of the LDD factory object.