BATTERY MINICLASS DRIVER

The miniclass driver is the primary function driver for the devices it controls. The DriverEntry routine initializes the miniclass driver. Product feedback Sign in to give documentation feedback. In addition, the miniclass driver must have other routines, as described in Supplying Required Battery Miniclass Driver Functionality. Product feedback Sign in to give documentation feedback. Unload Routine of a Battery Miniclass Driver. The following figure shows how these two drivers interact.

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Supplying Required Battery Miniclass Driver Functionality – Windows drivers | Microsoft Docs

Call BatteryClassUnload to inform the class driver that the miniclass driver is unloading the device. You may also leave feedback directly on GitHub. In the returned FDO, set flags and the stack size. You may also leave feedback directly on GitHub.

The call returns a pointer to the next-lower device object, which this example stores in the device extension. The following figure shows how these two drivers interact. Unload Routine of a Battery Miniclass Driver.

It receives IRPs from the power manager through the composite battery driver and calls support routines in the battery class driver to register its devices, to report status, and to handle certain system-defined battery IOCTLs.

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The following sample code initializes these entry points for a hypothetical NewBatt miniclass driver: For example, a smart battery driver might retain the number of batteries, a Boolean value indicating whether a battery selector is present, and, optionally, information about that battery selector. Product feedback Sign in to give documentation feedback.

Delete the device object for the device by calling IoDeleteDeviceas follows: Every battery miniclass driver provides a set of BatteryMini Xxx routines.

Battery miniclass drivers can specify zero for the DeviceCharacteristics parameter, which is irrelevant to these drivers. The class driver is designed to handle the superset of possible battery information and conditions, including temperature, changes batter capacity, and so forth; individual batteries vary in their ability to detect and report all these conditions. Delete the device object for the device by calling IoDeleteDeviceas follows:.

Choose the type you’d like to provide: Choose the type you’d like to provide: For additional routine-specific requirements, see the following topics: Store the pointer to the device’s PDO, the pointer to batter FDO, the device type, the batteryy name, and any other necessary state in the device extension.

In response to battery IOCTLs, the class driver calls battery miniclass driver routines BatteryMini Xxx routines in the miniclass drivers to perform specific device control operations.

Interaction of Battery Class and Miniclass Drivers – Windows drivers | Microsoft Docs

Product feedback Sign in to give documentation feedback. Product bzttery Sign in to give documentation feedback. Creating an FDO for its municlass and storing device-specific information in the associated device extension. The miniclass driver is the primary function driver for the devices it controls. The class driver receives information and status from all the miniclass drivers and reports it to the power manager through the composite battery driver.

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The Unload routine should first check to ensure that all its devices have been removed and, if not, do the following for each remaining device:. Read about this change in our blog post.

Unload Routine of a Battery Miniclass Driver

You may also leave feedback directly on GitHub. The Unload routine for a battery miniclass driver ensures that all the driver’s devices gattery been removed and frees any resources the miniclass driver has allocated. Feedback We’d love to hear your thoughts.