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WDF_INTERRUPT_POLARITY enumeration (wudfinterrupt.h)

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[Warning: UMDF 2 is the latest version of UMDF and supersedes UMDF 1. All new UMDF drivers should be written using UMDF 2. No new features are being added to UMDF 1 and there is limited support for UMDF 1 on newer versions of Windows 10. Universal Windows drivers must use UMDF 2. For more info, see Getting Started with UMDF.]

The WDF_INTERRUPT_POLARITY enumeration type is used to specify an interrupt signal's polarity.

Syntax

typedef enum _WDF_INTERRUPT_POLARITY {
  WdfInterruptPolarityUnknown,
  WdfInterruptActiveHigh,
  WdfInterruptActiveLow
} WDF_INTERRUPT_POLARITY, *PWDF_INTERRUPT_POLARITY;

Constants

 
WdfInterruptPolarityUnknown
The interrupt signal's polarity is unknown.
WdfInterruptActiveHigh
The interrupt signal is active when it is high.
WdfInterruptActiveLow
The interrupt signal is active when it is low.

Remarks

The WDF_INTERRUPT_POLARITY enumeration type is used to specify a member of the WDF_INTERRUPT_INFO structure.

Requirements

Requirement Value
Minimum UMDF version 1.11
Header wudfinterrupt.h