Note: This demo has been migrated to another repo. You can find instructions for working with the demo here: Digilent Reference - Arty A7 XADC Demo. Sources are version controlled in the Arty-A7 repo.

This project is a Vivado demo using the Arty A7-100T analog-to-digital converter ciruitry,switches and LEDs, written in Verilog. When programmed onto the board, voltage levels between 0 and 1 Volt are read off of the JXADC header. The 6 User LEDs increment from top right to left then bottom right to left as the voltage difference on the selected XADC pins gets larger. A0-A5 are single ended analog pins while A6-A7, A8-A9, and A10-A11 are differential ports. Each XADC channel can be selected depending on the switches position as shown in the following table. See the Arty A7-100T's Reference Manual for more information about how the Artix 7 FPGA's XADC is connected to header JXADC.

• Arty A7-100T: To purchase a Arty A7-100T, 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/Arty-A7-100-XADC.xpr".
3. In the Flow Navigator panel on the left side of the Vivado window, click Open Hardware Manager.
4. Plug the Arty A7-100T 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/Arty-A7-100-XADC.runs/impl_1/XADCdemo.bit" into the "Bitstream file" field. Then click Program.
8. The demo will now be programmed onto the Arty A7-100T. See the Introduction section of this README for a description of how this demo works.

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 Arty A7-100T's Resource Center to find more documentation, demos, and tutorials.

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