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WRITE_REGISTER_BUFFER_UCHAR function (miniport.h)

  • Article

The WRITE_REGISTER_BUFFER_UCHAR routine writes a number of bytes from a buffer to the specified register.

Syntax

void WRITE_REGISTER_BUFFER_UCHAR(
  [in] volatile UCHAR *Register,
  [in] PUCHAR         Buffer,
  [in] ULONG          Count
);

Parameters

[in] Register

Pointer to the register, which must be a mapped range in memory space.

[in] Buffer

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

[in] Count

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

Return value

None

Remarks

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

Callers of WRITE_REGISTER_BUFFER_UCHAR can be running at any IRQL, assuming the Buffer is resident and the Register is resident, mapped device memory.

Requirements

Requirement Value
Minimum supported client Available starting with Windows 2000.
Target Platform Universal
Header miniport.h (include Wdm.h, Ntddk.h, Ntifs.h, Miniport.h, Wudfwdm.h)
Library NtosKrnl.lib
DLL NtosKrnl.exe
IRQL Any level (see Remarks section)