Aim MIL-STD-1553 - Apicmdbufwrite

MIL-STD-1553 Reference Manual
167
Chapter 5 – Buffer Functions
5.1.5 ApiCmdBufWrite
Prototype:
AiInt16 ApiCmdBufWrite ( AiUInt32 ul_ModuleHandle, AiUInt8 biu, AiUInt8 bt, AiUInt16 hid,
AiUInt16 bid, AiUInt8 data_pos, AiUInt8 bit_pos,
AiUInt8 bit_len, AiUInt16 data );
Driver Command:
API_BUF_WRITE (0x5D)
Purpose:
This function is used to write a data word/bits to variable positions of the specified
BC/RT transmit/receive message buffer.
Input
A
A
i
i
U
U
I
I
n
n
t
t
8
8
b
b
t
t
Buffer type
Value
Constant
Description
1
API_BUF_BC_MSG
BC Message Buffer
2
API_BUF_RT_MSG
RT Message Buffer
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
‘hid’
Value
Constant
Description
0
1..n
Write Buffer Data Words to absolute
Data Buffer Index
Note: See section 1.3.5 for the
range allowed for this
parameter.
>0
0
API_BUF_WRITE_TO_CURRENT
Write to current Data Buffer Index
>0
Write Buffer Data Words to Data
Buffer Index relative to the Data
Buffer Queue Base Index of the
specified Buffer Header Identifier.
A
A
i
i
U
U
I
I
n
n
t
t
8
8
d
d
a
a
t
t
a
a
_
_
p
p
o
o
s
s
Value
Description
1..32
Data Word position in Buffer to write
A
A
i
i
U
U
I
I
n
n
t
t
8
8
b
b
i
i
t
t
_
_
p
p
o
o
s
s
Value
Description
0..15
Bit position in Data Word
A
A
i
i
U
U
I
I
n
n
t
t
8
8
b
b
i
i
t
t
_
_
l
l
e
e
n
n
Value
Description
1..16
Amount of Bits to write