RtWritePortUshort
RtWritePortUlong
The RtWritePort* calls write data directly to an I/O port from a specified buffer. Each function writes a different number of bytes of data.
Syntax
Copy
VOID RtWritePortUchar(
[in] PUCHAR PortAddress,
[in] UCHAR pBuffer
);
VOID RtWritePortUshort(
[in] PUSHORT PortAddress,
[in] USHORT pBuffer
);
VOID RtWritePortUlong(
[in] PULONG PortAddress,
[in] ULONG pBuffer
);Parameters
[in] PortAddress
A Port I/O address cast as a pointer to the type of data being written.
[in] pBuffer
The one-, two-, or four-byte quantum to be written to the port.
Remarks
These calls write directly to an I/O port from a buffer. RtWritePortUchar writes a single byte, RtWritePortUshort writes two bytes, and RtWritePortUlong writes four bytes of data at a time.
Requirements
| Minimum supported version | Header | Library |
|---|---|---|
|
wRTOS 1.0 SDK |
RtApi.h |
RtApi.lib (Windows), Startup.lib (RTSS) |
See Also:
