john_joe

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  1. Rebuilding the petalinux using the solution from @Andy7777 did solve the problem.
  2. Hello everyone, I retargeted Pynq v2.5 on the Zybo Z7-20 and tested few things and it is working fine, for example, accessing jupyter or adding custom overlays, etc. However, when I try to use it as a USB host (I am shorting jumper JP1) it does not recognize a pendrive. I try lsusb and it shows nothing. I was able to mount the pendrive using a PYNQ-Z2 image v2.5 and the pendrive is mounted. Is there any way to solve this? Thank you.
  3. Thank you @JColvin. I tested it and is working fine.
  4. Thank you. Indeed I used it with a raspberry pi without problem with a charger outputting 5V and 1A. I was a bit reluctant to connect the Zybo, as it is way more expensive than a raspberry pi zero.
  5. Hello everyone, that question may sound stupid, but is that possible to power up the Zybo-Z7 directly from the USB charger? The reason for that is that I want to boot the board uinsg SD Card and use some peripherals including HDMI-in and HDMI-out and the current from the usb port is not enough. Will charging the usb port directly to one charger such as the one from mobile phones damage the board? I do apologise if that question is obvious or stupid and I appreciate any reply. Thank you
  6. Dear all, I am working with a video processing platform based on this project: https://www.hackster.io/adam-taylor/creating-a-zynq-or-fpga-based-image-processing-platform-e79394 I am using a Zybo Z7-20 and I am successful to make a simple passthrough buffer using VDMA. The project is described in the link above. However, when I create a project for a simple RGB2GRAY in Vivado HLS to insert block into the previous platform, I can't make it work (link for second project here: https://www.hackster.io/adam-taylor/using-hls-on-an-fpga-based-image-processing-platform-8f029f). U
  7. Hi @jpeyron, thank you very much for that information. This needs a careful examination. Thank you.
  8. Hi @jpeyron, actually I was a little bit confused as VGA is output only, right? What I need to do is something close to this: input video source -> adjust resolution -> RGB2DVI, where input video source has VGA (640x480) resolution and RGB2DVI has 1920x1080 resolution. Thank you
  9. Hi @jpeyron, Can I use this Pmod VGA to output VGA video stream from a video source (for instance media player) and output the video to the RGB2DVI IP-Core? Thank you
  10. Hi @jpeyron,, many thanks for the support. Unfortunately your bitstream file does not work on my board. I also generated the bitstream from your project. No signal is detected on my screen. I am frustrated because I can't understand why. However, I was able to get the board working with this project that I found on Github: https://github.com/hamsternz/Artix-7-HDMI-processing Best regards.
  11. Dear @jpeyron, To summarize my problem: On nexys video: Clocking Wizard: PLL and RGB2DVI:PLL ==> bitstream is generated but no signal detected on screen and ILA core clock stopped Clocking Wizard:MMCM or RGB2DVI:MMCM ==> unroutable placement error message On zybo z7-20 : Clocking Wizard: PLL and RGB2DVI:MMCM ==> bitstream is generated and project works perfectly. Video is streamed on the screen. I am without understanding why the Nexys Video does not work. PS: I am not sure if it is relevant but I am using
  12. Dear @jpeyron, thank you! The Nexys Video HDMI project works as well as the default demo from the board. Regarding to the simple pass through buffer, when the clocking wizard and RGB2DVI is both configured as PLL the bit-stream is successfully generated. I am even able to see the ILA core with a message "no content". However, when I press play the "ILA clock stopped" message is shown and no signal detected is displayed on the screen. Otherwise, if the MMCM is setted instead in the DVI2RGB, the bad routing message is displayed and I am not able to generate the bit-st
  13. Interesting that I re-targeted the project to a Zybo Z7-20 and the project runs without problem when RGB2DVI is marked as PLL and I can reproduce the screen of my laptop on the monitor at 1080p.
  14. Hi everyone, thank you for the explanations and details already here. I have a Nexys Video that I received today and I have the following diagram for the passthrough buffer. My clock wizard is setup to 125Mhz. DVI2RGB is for 1080p clk >= 125MHz. Same for RGB2DVI. My problem is: If I set RGB2DVI as PLL I got the following error: [Labtools 27-3428] Ila core [hw_ila_1] clock has stopped. Unable to arm ILA core. Otherwise, if MCMM is setted, than I get this error: [Place 30-149] Unroutable Placement! A MMCM / (BUFIO/BUFR) component pair is not placed in a routabl