4Links Diagnostic SpaceWire Interface DSI-RG408, Руководство пользователя

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Diagnostic SpaceWire Interface
EtherSpaceLink family User Manual
17. 6 .8.
EtherSpaceLink_write_buffer_empty()
S ynops i s
int EtherSpaceLink_write_buffer_empty ( EtherSpaceLink DSI_unit
)
D esc ri pt i on
EtherSpaceLink_write_buffer_empty()
ch e cks wh et h e r t h e r e i s a n y da t a wa i t i n g to be
t
r a
n
s
m
i
tte
d
.
Th i s i s
u
s
e
f
ul
i f y
ou nee
d
to
k
no
w
t
ha
t
a
ll
da
t
a s
ent
has ac
tu
a
ll
y
been t
r a
n
s
m
i
tte
d
on t
h
e
S pac e W ir e l i n k .
N
ote
:
t
h i s d
oe
s
not
ch
e
ck f
o
r a
n
y da
t
a
be
i
n
g h
el
d i
n t
h
e
s
to
r
e
-a
n
d-f
o
r wa r d
bu
ff
e
r
(
i f p r
e
s
ent).
I nput p ara mete r s
DSI_unit
t
h
e
ha
n
d
le
r
etu
r
ne
d
b
y a s
u
cc
e
ssf
ul
EtherSpaceLink_open()
c
omm
a
n
d
.
Retu r ns
0 D a t a i s wa i t i n g to be t r a n s m i tte d
1 Th
e r e i
s
no
da
t
a wa
i t i n g to be t r
a
n
s
m i tte
d
.
-1 A
n e
rr
o
r
o
cc
u
rr
e
d
.
Note
Be awa r e t ha t
EtherSpaceLink_write_buffer_empty()
c on s ume s S pac e W ir e da t a f r om t h e
TC
P/
I
P
c
onne
c
t
i
on to t
h
e
E
t
h
e
r
S
pac
eL
i
n
k
un
i
t
wh i
le
i
t
i s wa i
t
i
n
g f
o
r a s
u
cc
e
ssf
ul
r
e
sp
on
s
e.
If
t
h
e un
i
t
un d e r te s t g ene r a te s asy n ch r onou s t r aff i c , t h i s m ig h t be a c on c e r n.
EtherSpaceLink_write_buffer_empty()
r
etu
r
n
s a r
e
s
ult
c
o
d
e o
f -1 i f a
n
y
S
pac
e
W ir
e
da
t
a i s
lo s t. See s e c t i on 1 7 .5. 3 , “ Asy n ch r onou s Iss ue s d u ri n g St a tu s Poll i n g ” ,
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