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Cmod S7-25 Out-Of-Box Demo


This project is a a simple Vivado demo using the Cmod S7-25's LEDs, RGB LED, buttons, and USB-UART bridge, written in Verilog. When programmed onto a Cmod S7, the demo will cycle the board's RGB LED from Blue to Green to Red to Black. The other LEDs will light up in sequence.

To use the USB-UART bridge feature of this demo, the Basys 3 must be connected to a serial terminal on the computer it is connected to over the MicroUSB cable. For more information on how to set up and use a serial terminal, such as Tera Term or PuTTY, refer to this tutorial. Whenever one of the two buttons is pressed, "Button # Pressed!" is sent to the computer using the USB-UART bridge.


Demo Setup

  1. Download and extract the most recent release ZIP archive from this repository's Releases Page.
  2. Open the project in Vivado 2018.2 by double clicking on the included XPR file found at "<archive extracted location>/vivado_proj/Cmod-S7-25-OOB.xpr".
  3. In the Flow Navigator panel on the left side of the Vivado window, click Open Hardware Manager.
  4. Plug the Cmod S7 into the computer running Vivado using a MicroUSB cable.
  5. Open a serial terminal emulator (such as TeraTerm) and connect it to the Cmod S7's serial port, using a baud rate of 9600.
  6. In the green bar at the top of the window, click Open target. Select "Auto connect" from the drop down menu.
  7. In the green bar at the top of the window, click Program device.
  8. In the "Program Device" Wizard, enter "<archive extracted location>vivado_proj/Cmod-S7-25-OOB.runs/impl_1/top.bit" into the "Bitstream file" field. Then click Program.
  9. The demo will now be programmed onto the Cmod S7. See the Introduction section of this README for a description of how this demo works.

Next Steps

This demo can be used as a basis for other projects, either by adding sources included in the demo's release to those projects, or by modifying the sources in the release project.

Check out the Cmod S7's Resource Center to find more documentation, demos, and tutorials.

For technical support or questions, please post on the Digilent Forum.

Additional Notes

For more information on how this project is version controlled, refer to the Digilent Vivado Scripts Repository