CNV with external weights FC layer have no result output

[wangtianxing1991]

hello,
I want to place the layers weights in DDR. TFC models success but CNV models fail. Failure appears as no result output. I don't know the reason for the failure. Thank you.
I think the only difference between the FC layer of CNV and TFC is the shape(1,w,h,ch). CNV-FC(w>1,h>1), TFC-FC(w=1,h=1). external weights don’t support (w>1,h>1) ?

Steps to Reproduce
The FINN version is 0.6

1. chanege folder to /workspace/finn/finn-examples/build/bnn-pynq/
2. In cnv-w1a1_folding_config.json file , add "mem_mode": "external" to "StreamingFCLayer_Batch_1".
3. add "auto_fifo_depths = False" in build.py.
4. run build.py to generate bitfile and pynqdriver of cnv-w1a1.
5. copy the bitfile and pynqdriver to ZCU104 board.
6. run in notebook: ! ssh {options} -t {username}@{ip} -p {port} 'cd {target_dir_pynq}; echo {password} | sudo -S python3.6 driver.py --exec_mode=throughput_test --batchsize=1'

Expected behavior
finished run and print:"Results written to nw_metrics.txt"

Actual behavior
wait for 10 min but no result. Stuck in position wait_until_finished.

Additional context

10_step_set_fifo_depths.zip