rcjhy8

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  1. Is this in Vivado under constraints? I have never made a constraints file before. I believe it made me an xdc file when I set the scl and sda pins to pull up and what not. Would I add it in there? Thanks, Russell
  2. Hello All, I am having an issue with running the Master Polled example on I2C with the zynq. I have a base design that is set up and runs the self test and repeated start examples and completes them. My issue is that I hooked up an I2C sensor, added pullup resistors, and it is failing. The only thing I have changed in SDK is that I have found the address of my I2C sensor, 0x57, and put it in place of 0x55. I can place my block design and what not here for referencing. Update - I have assigned I2C pins to W19 and W20 to SCL and SDA respectively.
  3. rcjhy8

    Zybo External LED Control

    Hi all, New to the FPGA world as I was tasked a project to help familiarize myself with the programming and function of how FPGAs work. As you can all infer, I am in need of some help on a specific project that I am doing. I am using a ZYBO Zynq 7000 development board, and Vivado 2019.1. What I am trying to do is control an external sensor, or LED through some user interface. I have seen a lot of tutorials that use the on-board LEDs, and if you press a button, it displays that value in binary in a command terminal. My task that I was to do is be able to turn on and off an external LED connected to the ZYBO through the command terminal. It seems I can connect a simple circuit with a LED and a resistor to the PMOD pins that are power and ground. What the command terminal would let me do is then essentially cut power to that pin, therefore turning the LED off. Please let me know if this is probable, and/or how I should task to complete it. Thanks, Russell