DriverLib

Description

Provides an example RTX device driver and application that uses a simple driver library to connect applications and drivers together.

Source Files

RtDriver.lib is an RTDLL built from two files:

RtdLibApp.c provides RTX device library application-side library functions; "open", "close" and "transfer - read, write, ioctl" interface, layered on top of RTX IPC.
RtdLibDrv.c provides RTX device library driver-side library functions; register, unregister, dispatch.

The driver library is used by:

DioDriver.c, a simple RTX device driver that reads a DIO board's digital input port.

The DIO driver is used by:

App.c, an application to test the DIO device driver by opening the driver, reading DIO input and printing a value.

Remarks

RtDriver.lib should be built first. It should build an RTDLL (.lib) not an RTSS DLL (.dll).
DioDriver.c uses RtDriver.lib. Ensure that it is either in the local directory, or that the path variable reflects the directory in which it was built.

NOTE: Win32 and RTSS processes can access the driver, which may be a Win32 process during testing, and later an RTSS process when finalized, with the same API.

APIs Referenced

RTAPI

Win32 APIs

RtAllocateLockedMemory