The Nexys 4 DDR was rebranded as the Nexys A7 starting with Revision D starting in 2018. Updated releases of this particular demo project, usable by all versions of both the Nexys 4 DDR and the Nexys A7 can be found in the Nexys A7 Resource center.
The Basic User Demo project demonstrates a simple use of the Nexys4-DDR's GPIOs and UART port. The behavior is as follows:
Not Used | Used | |
---|---|---|
16 user switches | X | |
16 user LEDs | X | |
Two tri-color LEDs | X | |
5 User Push Buttons | X | |
Two 4-digit 7-segment displays | X | |
4 Pmod ports | X | |
Pmod for XADC signals | X | |
12-bit VGA output | X | |
USB-UART Bridge | X | |
Serial Flash for Application Data | X | |
USB HID Host With Mouse | X | |
USB HID Host With Keyboard | X | |
Micro SD card connector | X | |
PWM audio output | X | |
PDM microphone | X | |
3-axis accelerometer | X | |
128MiB DDR2 | X | |
Temperature sensor | X | |
10/100 Ethernet PHY | X |
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1) Follow the Using Digilent Github Demo Projects Tutorial. This is an HDL design project, and as such does not support Vivado SDK, select the tutorial options appropriate for a Vivado-only design. Return to this guide when prompted to check for extra hardware requirements and setup.
2) In order to fully use the demo, you will need to connect a serial terminal to your Nexys DDR. Plug your board into your computer with Micro USB cables attached to the PROG+UART port and make sure the board is turned on. Then open a serial terminal (such as TeraTerm) on your computer. In the terminal application, setup the serial port to connect to the appropriate port for your board, with a baud rate of 9600. Then return to the Github Projects Tutorial to finish programming and running the demo.
The two tri-color LEDs are set to gradually change colors at all times. The user cannot affect them in this demonstration.