// wdfhwaccess.h

VOID WDF_WRITE_PORT_UCHAR(
  [in] WDFDEVICE Device,
  [in] PUCHAR    Port,
  [in] UCHAR     Value
);
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (nf-wdfhwaccess-wdf_write_port_uchar)

WDF_WRITE_PORT_UCHAR function

Description

[Applies to UMDF only]

The WDF_WRITE_PORT_UCHAR function writes a byte to the specified port address.

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.

`Value` [in]

Specifies a byte to be written to the port.

View the official Windows Driver Kit DDI reference