The txn_count field allows you to easily
repeat the command multiple times. If you need to loop more than one command, the
START_LOOP/END_LOOP pair is used. In the following example, you need to send the AXI
Read transactions to an address ('h0) and the next
Read to address+offset ('h1000_0000), then wait for
the Read data to arrive and repeat this step 100 (loop_count) times.
With the command START_LOOP, 100, incr_addr_by, 40 during each loop, you
increment the address by 'h40. Hence the Read address
(araddr) for consecutive transactions would be 'h0,
'h1000_0000, 'h40, 'h1000_0040 … and at the end of
test 200 Read transactions are issued. You also have an option to send the reads to the
same address (that is, 'h0, 'h1000_000, 'h0,'h1000_0000 …) by using
the command START_LOOP, <loop_count>, use_original_addr. This command resets the address to the original address
specified in the axi_addr column.
Looping in the Command Table of AXI-TG
