RTEMS C User's Guide
The I/O manager provides directives which enable the
application program to utilize device drivers in a standard
manner. There is a direct correlation between the RTEMS I/O
manager directives
rtems_io_initialize,
rtems_io_open,
rtems_io_close,
rtems_io_read,
rtems_io_write, and
rtems_io_control
and the underlying device driver entry points.
RTEMS C User's Guide
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