Digilent Reference learn:programmable-logic:tutorials:nexys-4-ddr-gpio-demo https://dev-wiki.digilent.com/ 2026-10-23T02:11:10+00:00 Digilent Reference https://dev-wiki.digilent.com/ https://dev-wiki.digilent.com/ttps://dev-wiki.digilent.com/lib/tpl/digilent-tpl/images/favicon.ico text/html 2022-10-04T11:38:45+00:00 Anonymous (anonymous@undisclosed.example.com) Nexys 4 DDR GPIO Demo https://dev-wiki.digilent.com/learn/programmable-logic/tutorials/nexys-4-ddr-gpio-demo/start?rev=1664883525&do=diff Nexys 4 DDR GPIO Demo Overview Description The Basic User Demo project demonstrates a simple use of the Nexys4-DDR's GPIOs and UART port. The behavior is as follows: * The 16 User LEDs are tied to the 16 User Switches. * The 7-Segment display counts from 0 to 9 on each of its 8 digits. Also, single anodes of the 7-Segment display are blanked by holding BTNU, BTNL, BTND, or BTNR. Holding the center button blanks all the 7-Segment anodes.