Struct Variable Packing¶
Syntax
#pragma HLS memory impl variable(<var_name>) pack(bit|byte) byte_enable(true|false)
Description
The pragma is to be used to pack an global interface / local memory variable with struct type. There are two packing modes: bit / byte where bit packing packs the struct fields using the exact bit-width and byte mode packs the fields with 8-bit alignment. byte_enable option creates an interface / memory with byte enable signals to write individual fields when set to true. Note that byte_enable is only valid with byte packing.
Parameters
Parameter |
Value |
Optional |
Default |
Description |
|---|---|---|---|---|
|
String |
No |
Variable name |
|
|
|
No |
Packing Mode |
|
|
|
Yes |
|
Use byte-enable to write struct fields |
Position
Before the global / local variable declaration.
Examples
#pragma HLS memory impl variable(b) pack(bit)
struct S s[100];