Aim MIL-STD-1553 - Apicmdbcbhdef

MIL-STD-1553 Reference Manual
199
Chapter 7 – Bus Controller Functions
7.1.3 ApiCmdBCBHDef
Prototype:
AiInt16 ApiCmdBCBHDef ( AiUInt32 ul_ModuleHandle, AiUInt8 biu, AiUInt16 hid,
AiUInt16 bid, AiUInt16 sid, AiUInt16 eid,
AiUInt8 qsize, AiUInt8 bqm, AiUInt8 bsm,
AiUInt8 sqm, AiUInt8 eqm, AiUInt8 dbm,
TY_API_BC_BH_INFO *pbh );
Driver Command:
API_BC_BH_DEF (0x71)
Purpose:
This function is used to associate a Data Buffer ID, Buffer Queue size, Queue mode,
and error protocol to a BC Buffer Header ID. The BC Buffer Header specified should
first be assigned to a BC Transfer using the function ApiCmdBCXferDef.
I
I
n
n
p
p
u
u
t
t
A
A
i
i
U
U
I
I
n
n
t
t
1
1
6
6
h
h
i
i
d
d
Buffer Header ID
Note: See Section 1.3.5 for the range allowed for this parameter.
A
A
i
i
U
U
I
I
n
n
t
t
1
1
6
6
b
b
i
i
d
d
Assigned Data Buffer Identifier
Note: See Section 1.3.5 for the range allowed for this parameter.
A
A
i
i
U
U
I
I
n
n
t
t
1
1
6
6
s
s
i
i
d
d
0 (Reserved for Status Queue Entry Identifier)
A
A
i
i
U
U
I
I
n
n
t
t
1
1
6
6
e
e
i
i
d
d
0 (Reserved for Event Queue Entry Identifier)
A
A
i
i
U
U
I
I
n
n
t
t
8
8
q
q
s
s
i
i
z
z
e
e
Buffer Queue size definition (Amount of contiguous Data Buffers)
Value
Constant
Description
0
API_QUEUE_SIZE_1
Queue size 1
1
API_QUEUE_SIZE_2
Queue size 2
2
API_QUEUE_SIZE_4
Queue size 4
3
API_QUEUE_SIZE_8
Queue size 8
4
API_QUEUE_SIZE_16
Queue size 16
5
API_QUEUE_SIZE_32
Queue size 32
6
API_QUEUE_SIZE_64
Queue size 64
7
API_QUEUE_SIZE_128
Queue size 128
8
API_QUEUE_SIZE_256
Queue size 256