ter-zybo / pmodenc_vhdl

Custom VHDL to display the value on 4 LEDs on the board depending on the Pmod ENC encoder

VHDL Project: Counter Control with PMODENC Rotary Encoder and LED Display

This project demonstrates how to build a VHDL-based design using Xilinx Vivado to control a counter with a PMODENC rotary encoder. The counter's value is displayed on 4 LEDs on the Zybo Z7-20 FPGA board.

Prerequisites

• Xilinx Vivado Design Suite
• Zybo Z7-20 FPGA board
• PMODENC rotary encoder

How to Use

Opening the Project in Vivado

1. Launch Vivado:

   • Open Xilinx Vivado Design Suite on your computer.

2. Open the Existing Project:

   • Go to File > Open Project.
   • Navigate to the Vivado_Project directory and select the project file to open.

Building the Project

1. Generate the Bitstream:
   • click on Generate Bitstream.

Programming the FPGA

1. Connect the FPGA Board:

   • Connect the Zybo Z7-20 FPGA board to your computer using a USB cable.

2. Program the Device:

   • In Vivado, go to Open Hardware Manager and click on Open Target > Auto Connect.
   • Click on Program Device and select the generated bitstream file to program the FPGA.

Running the Application

1. Connect the PMODENC:

   • Attach the PMODENC rotary encoder to the appropriate PMOD connector on the Zybo Z7-20 FPGA board.

2. Observe LED Display:

   • Rotate the PMODENC rotary encoder.
   • The counter value will be displayed on the 4 LEDs on the Zybo Z7-20 board.

References

This project is inspired by the Nexys 3 VHDL Example - ISE 14.2 guide from Digilent.