Pynq-z2 upload overlay connect time out

Support
1

Hi all, I have get the ‘cnn.bit’ file, but when I upload it, it always tell me connected time out.
Here is the question picture. Does anyone know how to fix this, thanks in advance.

overlay_upload_timeout
overlay_upload_timeout1716×1212 155 KB

1 Like
2

Hi,

Are you able to download other bitstream? The base overlay for instance.

Mario

3

Yes, I can.

56278a27b3c6f9e021bde3d833169cc
56278a27b3c6f9e021bde3d833169cc1672×815 88.9 KB

4

Can you please try to run the cell multiple times?

5

I’m new to this and don’t really understand it, can you tell me how to do it, or what code should be run?

6

Hi,

Simply re execute the same cell a few times and let me know if you are successful in any of the executions.

Mario

7

I have run 10 times, and all times is succeed.

get_run
get_run1710×727 97.5 KB

8

Can you please do the same for the cnn.bit?

9

I have try, but it show me the same error.

10

Is it possible for you to share the cnn.bit and cnn.hwh?

1 Like
11

I have download it from this website.

12

Hi @376197315,

According to the hwh file, the bitstream is targeting a 7010 device, which is not the same device as the PYNQ-Z2. Hence, the reason of failure.

@briansune what board is the bitstream targeting? Could you please add it to the README?

Mario

1 Like
13

@marioruiz

First I am sorry about developers don’t check before use (there are no directly said it is targeted for PYNQ-Z2) but I had given a resources usage table.
I will always expect people to recompile on their working environment.

I will add a Highlight about the chip info this is targeting.

14

Hi @briansune,

For people without much experience a resources table doesn’t say much. It would be best explicitly say what platform is supported to avoid confusion.

Mario

1 Like
15

Hi @marioruiz

True, I guess the chip info is more than enough as even it is on a different board as long as the chip is the same (excluding the speed grade) as -1 to -3 is just the timing stuff.
So this is universal enough.
Correct me if this is still not good enough.

Thank you

16

I would suggest that you add custom board next to the device so as to avoid any confusion.

Thank you.

17

Thank you for your help.