READ_PORT_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 READ_PORT_UCHAR function reads a byte from the specified port address.
UCHAR READ_PORT_UCHAR( IWDFDevice3 *pDevice, PUCHAR Port );
[in] Specifies a pointer to the IWDFDevice3 interface for the device object of the device to access.
[in] Specifies the port address, which must be a mapped memory range in I/O space.
READ_PORT_UCHAR returns the byte that is read from the specified port address.
For more information, see Reading and Writing to Device Registers in UMDF 1.x Drivers.
|End of support||Unavailable in UMDF 2.0 and later.|
|Minimum UMDF version||1.11|