Cmod A7-35T XADC Demo

Description

This project is a Vivado demo using the Cmod A7-35T's analog-to-digital converter ciruitry, push buttons and the RGB LED, written in Verilog. When programmed onto the board, voltage levels between 0 and 1 Volts are read off of the JXADC header. The RGB LEDs brightness increases as the voltage increases. When BTN1 is pressed, the demo switches the xadc channel 4 to channel 12 that is connected to pin 15 and 16 respectively. See the Cmod A7-35T's Reference Manual for more information about how the Artix 7 FPGA's XADC is connected to header JXADC.

Requirements

• Cmod A7-35T: To purchase a Cmod A7-35T, see the Digilent Store
• Vivado 2018.2 Installation: To set up Vivado, see the Installing Vivado and Digilent Board Files Tutorial.
• MicroUSB Cable
• Wires and a Circuit to Measure

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-A7-35T-XADC.xpr".
3. In the Flow Navigator panel on the left side of the Vivado window, click Open Hardware Manager.
4. Plug the Cmod A7-35T into the computer using a MicroUSB cable.
5. In the green bar at the top of the window, click Open target. Select "Auto connect" from the drop down menu.
6. In the green bar at the top of the window, click Program device.
7. In the Program Device Wizard, enter "<archive extracted location>vivado_proj/Cmod-A7-35T-XADC.runs/impl_1/XADCdemo.bit" into the "Bitstream file" field. Then click Program.
8. The demo will now be programmed onto the Cmod A7-35T. 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 A7-35T'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