Altera Mentor Verification IP Altera Edition AMBA AXI4-St Manuel d'utilisateur télécharger pdf (Page 183)

VHDL Tutorials

Verifying a Slave DUT

Mentor Verification IP AE AMBA AXI4-Stream User Guide, V10.3

183

April 2014

Example 11-2. Master Transaction Creation and Execution

--************************

-- Traffic generation: **

--************************

-- 10 x packet with

-- Number of transfer = i % 10. Values : 1, 2 .. 10

-- id = i % 15. Values 0, 1, 2 .. 14

-- dest = i %20. Values 0, 1, 2 .. 19

for i in 0 to 9 loop

transfer_count := (i mod 10) + 1;

create_master_transaction(transfer_count, trans, index,

axi4stream_tr_if_0(index));

set_id(i mod 15, trans, index, axi4stream_tr_if_0(index));

set_dest(i mod 20, trans, index, axi4stream_tr_if_0(index));

for j in 0 to ((transfer_count * byte_count) - 1) loop

set_data(i + j, j, trans, index, axi4stream_tr_if_0(index));

if(((i + j) mod 5) = 0) then

set_byte_type(AXI4STREAM_NULL_BYTE, j, trans, index,

axi4stream_tr_if_0(index));

elsif(((i + j) mod 5) = 1) then

set_byte_type(AXI4STREAM_POS_BYTE, j, trans, index,

axi4stream_tr_if_0(index));

else

set_byte_type(AXI4STREAM_DATA_BYTE, j, trans, index,

axi4stream_tr_if_0(index));

end if;

end loop;

execute_transaction(trans, index, axi4stream_tr_if_0(index));

end loop;

The master test program repeats the creation of master transactions similar to that shown in

Example 11-2, but instead calls the execute_transfer() task per iteration of the inner for loop, as

shown in Example 11-3.

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Altera Mentor Verification IP Altera Edition AMBA AXI4-St Manuel d'utilisateur Page 183