<s>
OSEK	B-Application
(	O
Offene	O
Systeme	O
und	O
deren	O
Schnittstellen	O
für	O
die	O
Elektronik	O
in	O
Kraftfahrzeugen	O
;	O
English	O
:	O
"	O
Open	O
Systems	O
and	O
their	O
Interfaces	O
for	O
the	O
Electronics	O
in	O
Motor	O
Vehicles	O
"	O
)	O
is	O
a	O
standards	O
body	O
that	O
has	O
produced	O
specifications	O
for	O
an	O
embedded	O
operating	B-General_Concept
system	I-General_Concept
,	O
a	O
communications	O
stack	O
,	O
and	O
a	O
network	O
management	O
protocol	O
for	O
automotive	O
embedded	B-Architecture
systems	I-Architecture
.	O
</s>
<s>
It	O
has	O
produced	O
related	O
specifications	O
,	O
namely	O
AUTOSAR	B-Application
.	O
</s>
<s>
OSEK	B-Application
was	O
designed	O
to	O
provide	O
a	O
reliable	O
standard	O
software	O
architecture	O
for	O
the	O
various	O
electronic	B-Device
control	I-Device
units	I-Device
(	O
ECUs	O
)	O
throughout	O
a	O
car	O
.	O
</s>
<s>
OSEK	B-Application
was	O
founded	O
in	O
1993	O
by	O
a	O
German	O
automotive	O
company	O
consortium	B-Application
(	O
BMW	O
,	O
Robert	O
Bosch	O
GmbH	O
,	O
DaimlerChrysler	O
,	O
Opel	O
,	O
Siemens	O
,	O
and	O
Volkswagen	O
Group	O
)	O
and	O
the	O
University	O
of	O
Karlsruhe	O
.	O
</s>
<s>
In	O
1994	O
,	O
the	O
French	O
cars	O
manufacturers	O
Renault	O
and	O
PSA	O
Peugeot	O
Citroën	O
,	O
which	O
had	O
a	O
similar	O
project	O
called	O
VDX	O
(	O
Vehicle	O
Distributed	O
eXecutive	O
)	O
,	O
joined	O
the	O
consortium	B-Application
.	O
</s>
<s>
Therefore	O
,	O
the	O
official	O
name	O
was	O
OSEK/VDX	B-Application
and	O
OSEK	B-Application
was	O
registered	O
trademark	O
of	O
Continental	O
Automotive	O
GmbH	O
(	O
until	O
2007	O
:	O
Siemens	O
AG	O
)	O
.	O
</s>
<s>
OSEK	B-Application
is	O
an	O
open	O
standard	O
,	O
published	O
by	O
a	O
consortium	B-Application
founded	O
by	O
the	O
automobile	O
industry	O
.	O
</s>
<s>
Some	O
parts	O
of	O
OSEK	B-Application
are	O
standardized	O
in	O
ISO	B-Application
17356	I-Application
.	O
</s>
<s>
The	O
OSEK	B-Application
standard	O
specifies	O
interfaces	O
to	O
multitasking	O
functions	O
—	O
generic	O
I/O	O
and	O
peripheral	O
access	O
—	O
and	O
thus	O
remains	O
architecture	O
dependent	O
.	O
</s>
<s>
OSEK	B-Application
is	O
expected	O
to	O
run	O
on	O
microcontroller	O
without	O
memory	B-General_Concept
management	I-General_Concept
unit	I-General_Concept
(	O
MMU	B-General_Concept
)	O
,	O
which	O
is	O
favored	O
for	O
safety-critical	B-Application
systems	I-Application
such	O
as	O
cars	O
,	O
therefore	O
features	O
of	O
an	O
OSEK	B-Application
implementation	O
will	O
be	O
usually	O
configured	O
at	O
compile-time	O
.	O
</s>
<s>
The	O
number	O
of	O
application	O
tasks	O
,	O
stacks	O
,	O
mutexes	B-Operating_System
,	O
etc	O
.	O
</s>
<s>
OSEK	B-Application
recognizes	O
two	O
types	O
of	O
tasks/threads/compliance	O
levels	O
:	O
basic	O
tasks	O
and	O
enhanced	O
tasks	O
.	O
</s>
<s>
First	B-Operating_System
In	I-Operating_System
First	I-Operating_System
Out	I-Operating_System
(	O
FIFO	B-Operating_System
)	O
scheduling	O
is	O
used	O
for	O
tasks	O
with	O
equal	O
priority	O
.	O
</s>
<s>
Deadlocks	O
and	O
priority	B-Operating_System
inversion	I-Operating_System
are	O
prevented	O
by	O
priority	B-Operating_System
ceiling	I-Operating_System
(	O
i.e.	O
</s>
<s>
no	O
priority	B-Operating_System
inheritance	I-Operating_System
)	O
.	O
</s>
<s>
An	O
Application	B-Operating_System
Binary	I-Operating_System
Interface	I-Operating_System
(	O
ABI	O
)	O
is	O
also	O
not	O
specified	O
.	O
</s>
<s>
OSEK-OS	O
scheduling	O
can	O
be	O
configured	O
as	O
:	O
</s>
<s>
Currently	O
the	O
AUTOSAR	B-Application
consortium	B-Application
reuses	O
the	O
OSEK	B-Application
specifications	O
as	O
part	O
of	O
the	O
Classic	O
Platform	O
.	O
</s>
<s>
The	O
operating	B-General_Concept
system	I-General_Concept
is	O
a	O
backwards	O
compatible	O
superset	O
of	O
OSEK	B-Application
OS	O
which	O
also	O
covers	O
the	O
functionality	O
of	O
OSEKtime	B-Application
,	O
and	O
the	O
communication	O
module	O
is	O
derived	O
from	O
OSEK	B-Application
COM	O
.	O
</s>
<s>
OSEKtime	B-Application
specifies	O
a	O
standard	O
for	O
optional	O
time-triggered	O
real-time	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
If	O
used	O
,	O
OSEKtime	B-Application
triggered	O
callbacks	O
run	O
with	O
higher	O
priority	O
than	O
OSEK	B-Application
tasks	O
.	O
</s>
<s>
There	O
is	O
also	O
a	O
limited	O
amount	O
of	O
active	O
research	O
,	O
e	O
.	O
g	O
.	O
in	O
the	O
area	O
of	O
systems	O
engineering	O
and	O
OSEK	B-Application
/	O
VDX	O
RTOS	B-Operating_System
or	O
in	O
relation	O
to	O
the	O
compatibility	O
between	O
OSEK	B-Application
and	O
AUTOSAR	B-Application
.	O
</s>
<s>
The	O
potential	O
of	O
OSEK	B-Application
was	O
also	O
mentioned	O
.	O
</s>
<s>
See	O
also	O
:	O
Comparison	B-Operating_System
of	I-Operating_System
real-time	I-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
Lego	B-Application
Mindstorms	I-Application
implementations	O
:	O
</s>
