When the platform enters Modern Standby and the display is turned off, the NFP device must enter either standby mode or power-removed power mode. The NFP device should be placed in either standby mode or power-removed mode when no handles to the device are open and enabled. From a driver development point of view, this condition occurs when there are no handles outstanding on the device. Generally, the NFP device can enter a low-power mode (standby mode or power-removed mode) when either no software clients have proximity publications or subscriptions, or all publications and subscriptions are disabled. The NFP device is typically connected to the I2C interface pins of the System on a Chip (SoC) or core silicon. A third-party driver, provided by the NFP device vendor, is responsible for implementing the GUI_DEVINTERFACE_NFP interface and power-managing the physical NFP device. A near-field proximity (NFP) device is a short-range radio transmitter/receiver device that enables a Windows PC to associate and pair with other NFP-equipped computers.Īn NFP device is exposed to the Windows operating system through the GUID_DEVINTERFACE_NFP Plug and Play (PnP) interface.
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