RtReadPortUshort
RtReadPortUlong
The RtReadPort* calls read data directly from an I/O port. Each function reads a different number of bytes of data.
Syntax
Copy
UCHAR RtReadPortUchar(
[in] PUCHAR PortAddress
);
USHORT RtReadPortUshort(
[in] PUSHORT PortAddress
);
ULONG RtReadPortUlong(
[in] PULONG PortAddress
);Parameters
[in] PortAddress
A Port I/O address cast as a pointer to the type of data to be read.
Remarks
These calls read directly from an I/O port and return the data. RtReadPortUchar reads a single byte, RtReadPortUshort reads two bytes, andRtReadPortUlong reads 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:
