How to use XVC on RFSOC ZCU216

[weicheng_mao]

I encountered a problem, I use RFSOC ZCU216 this board, I do not have JTAG wire debugging, I use PYNQ part to do the top design, and in jupyter inside python test, but my PYNQ version is 2.7, can not use XVC and debug bridge, how should I debug without physical wiring? Should I update my PYNQ version? Or do you use other debugging methods

[marioruiz]

Hi @weicheng_mao,

Welcome to the PYNQ community.

I would suggest trying to add the XVC driver locally to your project and trying it out this way.

Copy this file next to your Notebook/Python code and import it before you create the Overlay object.

pynq/lib/debugbridge.py

This should allow you to do what I described in my blog

Using an ILA without Physical micro USB cable [Part 4]

Using an ILA without Physical micro USB cable In many cases it is not possible to have the micro USB cable physically connected to the board. No need to worry, it is still possible to use ILA via the XVC and the Debug Bridge In the forums there have been a series of questions about this topic, with satisfactory answers. In the latest release of PYNQ (3.0.1 at the time of writing) a community contribution included support for it directly into PYNQ. You can read more in the documentation For t…

Mario

[weicheng_mao]

Thank you, Thanks for contributing to PYNQ! I followed your approach, but I encountered problems when importing debugbridge

I know this is caused by the missing module “pynqutils”, but I don’t know how to get this module. Is this related to my pynq version being 2.7? I read your blog and found that I need to update to pynq 3.0, but RFSOC ZCU216 currently doesn’t seem to have pynq 3.0. My Jupyter code is as follows:

from pynq import Overlay,allocate
import time
import numpy as np
from debugbridge import DebugBridge

ol = Overlay(“bd_ookmod_test2.bit”)
ol.ip_dict

%matplotlib inline
import matplotlib.pyplot as plt
from ipywidgets import *
bridge = ol.debug_bridge_0
bridge.start_xvc_server(bufferLen=4096, serverAddress=“0.0.0.0”,
serverPort=2542, reconnect=True, verbose=True)

data_size = 512
input_buffer = allocate(shape=(data_size,), dtype=np.uint16)
output_buffer = allocate(shape=(data_size64,), dtype=np.uint16)
raw_input = ( (np.sin(np.linspace(0, 4np.pi, data_size)) + 1) * 65536 / 2).astype(dtype=np.uint16)

for i in range(data_size):
input_buffer[i] = raw_input[i]

plt.plot(range(len(input_buffer)), input_buffer)
print(“the len of input_buffer:{}”.format(len(input_buffer)))
dma_send = ol.axi_dma_0.sendchannel
dma_recv = ol.axi_dma_0.recvchannel
dma_send.transfer(input_buffer)
dma_recv.transfer(output_buffer)
dma_send.wait()
dma_recv.wait()
print(input_buffer)
print(output_buffer)
plt.plot(range(len(output_buffer)), output_buffer)
print(“the len of input_buffer:{}”.format(len(output_buffer)))

print(“DMA sendchannel state is idle:{}”.format(dma_send.idle))
print(“DMA sendchannel state is running:{}”.format(dma_send.running))
print(“DMA recvchannel state is idle:{}”.format(dma_recv.idle))
print(“DM1 recvchannel state is running:{}”.format(dma_recv.running))

[marioruiz]

You can try to installed as shown here: GitHub - Xilinx/PYNQ-Utils: PYNQ-Utils is a repository containing utilities used in various other repos and projects across the PYNQ ecosystem.

Also, can’t you use the micro USB port to debug?

[weicheng_mao]

Thank you, I will try again. I don’t have a physical cable to debug at the moment, so I want to try using XVC,Maybe I’ll buy a USB or JTAG.