RTEMS 4.9.5 On-Line Library

I/O Manager IO_INITIALIZE - Initialize a device driver

RTEMS C User's Guide

16.4.3: IO_INITIALIZE - Initialize a device driver

CALLING SEQUENCE:

rtems_status_code rtems_io_initialize(
  rtems_device_major_number  major,
  rtems_device_minor_number  minor,
  void                      *argument
);

DIRECTIVE STATUS CODES:

RTEMS_SUCCESSFUL - successfully initialized
RTEMS_INVALID_NUMBER - invalid major device number

DESCRIPTION:

This directive calls the device driver initialization routine specified in the Device Driver Table for this major number. This directive is automatically invoked for each device driver when multitasking is initiated via the initialize_executive directive.

A device driver initialization module is responsible for initializing all hardware and data structures associated with a device. If necessary, it can allocate memory to be used during other operations.

NOTES:

This directive may or may not cause the calling task to be preempted. This is dependent on the device driver being initialized.

RTEMS C User's Guide