Can not download the bit from the kv260

[NvCenter]

When I installed PYNQv2.7 on KV260 Ubuntu20.04, I executed the built-in test program pynq-hello and I was able to import the bit file correctly. But when I tried to import my own bit file, an error occurred：

overlay = Overlay(“…/overlay/dft.bit”)

---

OSError Traceback (most recent call last)
OSError: [Errno 22] Invalid argument

During handling of the above exception, another exception occurred:

OSError Traceback (most recent call last)
in
----> 1 overlay = Overlay(“…/overlay/dft.bit”)

/usr/local/share/pynq-venv/lib/python3.8/site-packages/pynq/overlay.py in init(self, bitfile_name, dtbo, download, ignore_version, device)
352
353 if download:
→ 354 self.download()
355
356 self.doc = _build_docstring(self._ip_map._description,

/usr/local/share/pynq-venv/lib/python3.8/site-packages/pynq/overlay.py in download(self, dtbo)
418 Clocks.set_pl_clk(i)
419
→ 420 super().download(self.parser)
421 if dtbo:
422 super().insert_dtbo(dtbo)

/usr/local/share/pynq-venv/lib/python3.8/site-packages/pynq/bitstream.py in download(self, parser)
185
186 “”"
→ 187 self.device.download(self, parser)
188
189 def remove_dtbo(self):

/usr/local/share/pynq-venv/lib/python3.8/site-packages/pynq/pl_server/embedded_device.py in download(self, bitstream, parser)
594 fd.write(str(flag))
595 with open(self.BS_FPGA_MAN, ‘w’) as fd:
→ 596 fd.write(bitstream.binfile_name)
597
598 self.set_axi_port_width(parser)

OSError: [Errno 22] Invalid argument

Then I tried this method：

overlay = Overlay(“…/overlay/dft.bit”,download=False)
overlay.binfile_name = “/usr/lib/firmware/dft.bin”
overlay.download()

---

FileNotFoundError Traceback (most recent call last)
FileNotFoundError: [Errno 2] No such file or directory

During handling of the above exception, another exception occurred:

FileNotFoundError Traceback (most recent call last)
in
2 overlay = Overlay(“…/overlay/dft.bit”,download=False)
3 overlay.binfile_name = “/usr/lib/firmware/dft.bin”
----> 4 overlay.download()

/usr/local/share/pynq-venv/lib/python3.8/site-packages/pynq/overlay.py in download(self, dtbo)
418 Clocks.set_pl_clk(i)
419
→ 420 super().download(self.parser)
421 if dtbo:
422 super().insert_dtbo(dtbo)

/usr/local/share/pynq-venv/lib/python3.8/site-packages/pynq/bitstream.py in download(self, parser)
185
186 “”"
→ 187 self.device.download(self, parser)
188
189 def remove_dtbo(self):

/usr/local/share/pynq-venv/lib/python3.8/site-packages/pynq/pl_server/embedded_device.py in download(self, bitstream, parser)
594 fd.write(str(flag))
595 with open(self.BS_FPGA_MAN, ‘w’) as fd:
→ 596 fd.write(bitstream.binfile_name)
597
598 self.set_axi_port_width(parser)

FileNotFoundError: [Errno 2] No such file or directory

I’m sure there’s no problem with the file path, but it still didn’t work。。

[NvCenter]

I also tried a lot of different bit files, but none of them succeeded, only this download in pynq-helloworld was successful after the installation was completed
This is the error-reporting jumpyter
Compare.ipynb (14.1 KB)

[briansune]

Hi,

Are you sure “…/overlay/dft.bit” three dot is a correct path?

[NvCenter]

yes, i am sure about it. I also tried to put the bit and hwh files in the same directory as jupyter, but the above error still appeared.
I showed the files in the overlay in jupyter to make sure it wasn’t a path issue
pass.ipynb (13.4 KB)

[briansune]

Hello,

Can you open terminal via the Juypter Notebook:

Then try to test the bit path on that?
ls or ll the path location.
Thank you

[NvCenter]

Hello,
Is that so?

thank you

[briansune]

Yes,

So how could three bot is a correct path.
Maybe I missed st.

[NvCenter]

Yes,
I’m also confused as to why this problem happens.
When I tried to import the test program that came with OYNQV2.7, he was able to download it normally

[briansune]

Remember to close the issue with solution tick.
Welcome to the community.

[NvCenter]

Sorry, as my English was poor, it was not well expressed. But is still have the issue.
I still cannot download my bit. Only after installing PYNQ, the included PYNQ-HelloWorld can be downloaded successfully.

[briansune]

I am confused,
You install PYNQ following this guide?

GitHub - Xilinx/Kria-PYNQ

[NvCenter]

Yes, I install PYNQ follow this guide,
Only the built-in PYNQ-HelloWorld bit can be downloaded successfully.
But bit files that I created or came down from github can’t be downloaded successfully

[briansune]

Please make sure the FPGA device is aligned with the project.

[NvCenter]

…You are right, I’m an idiot
Is it okay to select the Solution to close the question?
Thank you a lot

[briansune]

Don’t worry you are not alone =]
See many cases including myself.