WRITE_REGISTER_UCHAR function (wudfddi_hwaccess.h)

[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 WRITE_REGISTER_UCHAR routine writes a byte to the specified address.

Syntax

void WRITE_REGISTER_UCHAR(
  [in] IWDFDevice3 *pDevice,
  [in] PUCHAR      Register,
  [in] UCHAR       Value
);

Parameters

[in] pDevice

Specifies a pointer to the IWDFDevice3 interface for the device object of the device to access.

[in] Register

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

[in] Value

Specifies a byte to write to the register.

Return value

None

Remarks

For more information, see Reading and Writing to Device Registers in UMDF 1.x Drivers.

Requirements