BSP and Device Driver Development Guide
The Discrete driver is responsible for providing an interface to Discrete Input/Outputs. The capabilities provided by this class of device driver are:
Most discrete I/O devices are found on I/O cards that support many bits of discrete I/O on a single card. This driver model is centered on the notion of reading bitfields from the card.
There are currently no discrete I/O device drivers included in the RTEMS source tree. The information provided in this chapter is based on drivers developed by OAR Corporation personnel for applications using RTEMS. It is hoped that this driver model information can form the basis for a standard discrete I/O driver model that can be supported in future RTEMS distribution.
BSP and Device Driver Development Guide
Copyright © 1988-2000 OAR Corporation