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Found 3 results

  1. Dear All, I have currently finished a PL program for signal processing and hardware controlling on the Zybo Z7010 board. Now, I want to ensure that some parameters can be easily modified by the user on a computer. Thus, I would like to use the USB -- micro-USB cable to instaure a communication between the user and the board. After some reading, I understand that I have to use the PS if I want to go through the micro-USB UART port (I have not yet used the PS in my project...). Hence, I need two things: - Instantiating the UART interface and writing the C/C++ script to ensure communication between User and PS - Creating a write/read connection between PS and PL to modify the parameters after reception by the PS. How should I proceed? As usual, feel free to ask for any further information. P.S. : Until now, I have used only Verilog and VHDL code to make the whole project run and am very uncomfortable with the "Block design" tool, so please be as specific as possible if block design is required (or faster/simpler...) Thank you very much,
  2. Hi everyone, After having succesfully managed to use de XADC of the Zybo Z7010 board as explained in this post, I am now trying to use a DAC Pmod (reference and documentation here). After having checked the documentation, I have tried to write the SPI connection to the DAC (please find the verilog file and simulation in the attached files). Note, that I have decided to set the l_dac signal to 0 to enable continuous output to an oscilloscope. The simulation seems to run well to me and to be in accordance with the documentation, however, the result is not satisfactory. Indeed, the signal I want to output is on 16-bits and the command "output = 16'b1111111111111111", which should give the max value does not reach it. Besides, when I ask to "output = 16'b1000000000000000", which should give half of the max signal, the output is almost zero. Finally, please find in the attached files the image I get on an oscilloscope when I input a sine signal with 0.5V offset and 1Vpp. Does aybody see what I am missing ? Don't hesitate to ask more details if needed. Thank you in advance, DAC_wiz_0.v DAC_wiz_0.sim
  3. Hi, Problem : I am new to FPGA and I would need to understand how to read an Analog input through the XADC to analyze it on the board and then be able to accordingly output a trigger for other machines. One simple thing that I would try to do for the time being is to read in the analog signal and wire it to a led so that I could effectively see the code is working. How do I do that ? Finally, one extra constraint is that I have to limit as much as possible the use of the Zynq processor (I'm not really sure this is achievable, please excuse my lack of knowledge). Product : I use the Zybo Z7 board XC7Z010-1CLG400C and Vivado Design Suite 18.3 What I have tried : I think the tutorial I've seen that best suits be needs is this one : https://cdn.instructables.com/ORIG/FRT/SYN1/IWMMH04D/FRTSYN1IWMMH04D.pdf Everything is alright until it comes to copy the instantiation template into the wrapper. I'm not really sure of how this works. After that, it is said there that the Digital input I'm interested in is named "daddr_in" ==> how should I extract it then to - let's say - connect it to a led ? Please find the Constraint file and project in the attached files and let me know if you need more. I have also made other attempts through this : http://realisenow.sdu.dk/using-the-xadc-on-the-zybo-board/ Hence a question on the fly : when I open the SDK and enter a code in C, then I'm starting to ork on the PS isn't it ? Finally, I have also tried the XADC demo project on the digilent website but couldn't sort out how to adapt it to my needs. Thank you in advance for your healp, ! Zybo-Z7-Master.xdc design_1_wrapper.v xadc_wiz_0.v