4Links Diagnostic SpaceWire Interface DSI-RG408, Руководство пользователя

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Diagnostic SpaceWire Interface
EtherSpaceLink family User Manual
17.1. 6 . S p a ce Wir e T ra nsm i ss i ons
D
a
t
a pack
et
s
o
f a
n
y s i z
e
ca
n be
s
ent
a
n
d r
e
c
e
i
ve
d
(t
h
e
y d
o not
ha
ve to be mult
i p
le
s
o
f 4-
b
y
te
s , a
n
d
t h e r e i s no m a x i mum pack et s i z e l i m i t). P ack et s i z e i s not l i m i te d b y u s e r bu ff e r s i z e; lon g pack et s ca n
be
sp
l
i
t
i
nto
s
e
g
ment
s wh
e
r
e e
ach s
e
g
ment
f i
t
s
t
h
e u
s
e
r’ s
bu
ff
e
r
.
R out i ne s a r e p r ov i d e d to o p en a c onne c t i on to a p o r t a l , to s en d da t a to i t , to r e c e i ve da t a f r om i t a n d to
c
lo
s
e t
h
e
c
onne
c
t
i
on.
Th
e S
pac
e
W ir
e l
i
n
k
t
r a
n
s
m
i ss i
on
sp
ee
d a
n
d
o
p
e
r a
t
i
n
g
mo
d
e
ca
n be
s
et b
y s
o
f
t
wa r
e.
17.
2
.
S
p
a
ce
Wir
e L
i
nk
M
o
d
e te
r
ms
Th e l i n k mo d e d e sc ri be d i n t h i s m a nu a l as “no r m a l” c o rr e sp on ds to t h e EC SS -E- S T- 50 -12C S pac e W ir e
s
t
a
n
da r d ’ s
“l
i
n
k s
t
a r
t” mo
d
e.
Th e l i n k mo d e d e sc ri be d i n t h i s m a nu a l as “le g acy ” c o rr e sp on ds to t h e s t a n da r d ’ s “ a uto s t a r t” mo d e.
W
e
f i
n
d
t
h
e
s
t
a
n
da r d ’ s
u
s
e o
f
t
h
e te
r
m “
a
uto
s
t
a r
t” to be
c
on
f
u
s i
n
g as i
t
r
e
f
e
r s
to
a
l
i
n
k
t
ha
t
d
oe
s NOT
s t a r t i t s el f , but wa i t s f o r ac t i v i t y f r om t h e ot h e r en d o f t h e l i n k be f o r e s t a r t i n g . Th i s mo d e i s u s e f ul f o r
ol
d
e
r d
ev
i c
e
s
t
ha
t
d
o not
f
ull
y i
m
p
lement t
h
e
c
u
rr
ent
s
t
a
n
da r d ’ s s
t
a r
t
-
u
p p r
oto
c
ol
,
but
i
t
sh
oul
d
not
ot h e r w i s e be u s e d ; a l i n k w i ll neve r s t a r t i f bot h en ds a r e c on f ig u r e d f o r a uto s t a r t!
17. 3 . Comp i l i n g P r o gra ms th a t use the Ethe rS p a ceL i nk A P I
Be f o r e w e ca n s t a r t w ri t i n g a n y c o d e to d ri ve ou r 4 L i n ks un i t , w e nee d to ch e ck t h e c om p i l a t i on r oute.
A
t t
h
e to
p
o
f
ou
r p r
o
gr a
m
, w
e mu
s
t
i
n
c
lu
d
e t
h
e
EtherSpaceLink.h
f i
le t
ha
t
p r
ov
i d
e
s a
ll o
f
t
h
e
c on s t a nt a n d f un c t i on d e c l a r a t i on s t ha t i t r e q u ir e s .
Wh
en
w
e
c
om
p
i le t
h
e
p
r o gr
a
m ,
w
e
a
l
s
o mu
s
t
c
om
p
i le (o r
s
u
pp
l
y p
r e
c
om
p
i le
d
) t
h
e
EtherSpaceLink.c
C-A
P
I c
o
d
e
wh i ch d
oe
s a
ll o
f
t
h
e
ha r d w
o
r k
o
f
m
a
n
a gi
n
g
t
h
e
E
t
h
e
r
net
a
n
d
t
h
e
bu
ff
e r
s
t
ha
t i t u
s
e
s
.
C
om
p i
l
a
t
i
on
c
omm
a
n
d
l
i
ne
s a r
e
i
n
c
lu
d
e
d h
e
r
e
f
o
r M i c r
o
s
o
f
t
W i
n
d
o
ws ® a
n
d f
o
r
L
i
nux.
U n d e r W i n d o ws , u s i n g t h e V i s u a l C ++ c om p i le r, r un :
vcvars32
(on c e , to s et u p t h e c om p i le r f o r c omm a n d- l i ne acc e ss )
cl /MT /D _X86_ c-api-example.c EtherSpaceLink.c wsock32.lib
F o r L i nux , u s i n g t h e g cc c om p i le r, r un :
gcc -o c-api-example c-api-example.c EtherSpaceLink.c -lm -lpthread
O u r c u s tome r s a l s o s u cc e ssf ull y u s e t h e
EtherSpaceLink.c
C-A P I c o d e un d e r App le O S X, w i t h
Cy g w i
n on
W i
n
d
o
ws , a
n
d w i
t
h
ot
h
e
r C c
om
p i
le
r s a
n
d r
un
-
t
i
me env
ir
onment
s
. Some
ha
ve
a
l
s
o
en caps ul a te d t h e C-A P I f o r u s e b y l a n g u a g e s s u ch as P y t h on a n d f o r app l i ca t i on s s u ch as L a b V i e w ® .
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