WDF_WRITE_PORT_BUFFER_UCHAR function

[Applies to UMDF only]

The WDF_WRITE_PORT_BUFFER_UCHAR function writes a number of bytes from a buffer to the specified port.

Syntax


void WDF_WRITE_PORT_BUFFER_UCHAR(
  _In_  WDFDEVICE Device,
  _In_  PUCHAR   Port,
  _In_  PUCHAR   Buffer,
  _In_  ULONG  Count 
);

Parameters

Device [in]

A handle to a framework device object.

Port [in]

A pointer to the port, which must be a mapped memory range in I/O space.

Buffer [in]

A pointer to a buffer from which an array of UCHAR values is to be written.

Count [in]

Specifies the number of bytes to be written to the buffer.

Return value

This function does not return a value.

Remarks

The size of the buffer must be large enough to contain at least the specified number of bytes.

Requirements

Minimum support

Windows 8.1

Minimum UMDF version

2.0

Header

Wdfhwaccess.h

 

 

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