Available in OS X v10.2 and later.
Driver that matches to USB HID devices.
This class can be overriden to provide for specific behaviors.
Suspends the port for this device or optionally sets a timeout to suspend after a period of inactivity.
virtual IOReturn SuspendPort( bool
suspendPort, UInt32 timeoutMS = 0);
Boolean value. true = suspend the port, false = resume the port.
Value in milliseconds If value is non-zero, the port will be suspended after the timeout milliseconds have passed without any read completions.
The IOReturn value from the IOUSBDevice::Suspend() call.
This call can be used to immediately suspend/resume a port or to enable the suspension of the port after a period of inactivity. If called with suspendPort = true (no timeout parameter), the HID driver will immediately suspend the port, after aborting any outstanding reads on the interrupt pipe. If called with suspendPort = true and timeout != 0, it will suspend the port after the timeout number of ms have passed without any read completions. If called with suspendPort = false, the port will be immediately resumed and the reads will be re-issued. If a timeout was enabled, it will be cancelled.