basys3.xdc

## Digilent Basys 3 (Artix-7 xc7a35tcpg236-1) constraints for the NTT self-test.
## Subset of the Digilent master XDC: 100 MHz clock, 16 LEDs, centre button.

## Clock — 100 MHz on W5
set_property -dict { PACKAGE_PIN W5   IOSTANDARD LVCMOS33 } [get_ports clk]
create_clock -period 10.000 -name sys_clk [get_ports clk]

## LEDs LD0..LD15
set_property -dict { PACKAGE_PIN U16  IOSTANDARD LVCMOS33 } [get_ports {led[0]}]
set_property -dict { PACKAGE_PIN E19  IOSTANDARD LVCMOS33 } [get_ports {led[1]}]
set_property -dict { PACKAGE_PIN U19  IOSTANDARD LVCMOS33 } [get_ports {led[2]}]
set_property -dict { PACKAGE_PIN V19  IOSTANDARD LVCMOS33 } [get_ports {led[3]}]
set_property -dict { PACKAGE_PIN W18  IOSTANDARD LVCMOS33 } [get_ports {led[4]}]
set_property -dict { PACKAGE_PIN U15  IOSTANDARD LVCMOS33 } [get_ports {led[5]}]
set_property -dict { PACKAGE_PIN U14  IOSTANDARD LVCMOS33 } [get_ports {led[6]}]
set_property -dict { PACKAGE_PIN V14  IOSTANDARD LVCMOS33 } [get_ports {led[7]}]
set_property -dict { PACKAGE_PIN V13  IOSTANDARD LVCMOS33 } [get_ports {led[8]}]
set_property -dict { PACKAGE_PIN V3   IOSTANDARD LVCMOS33 } [get_ports {led[9]}]
set_property -dict { PACKAGE_PIN W3   IOSTANDARD LVCMOS33 } [get_ports {led[10]}]
set_property -dict { PACKAGE_PIN U3   IOSTANDARD LVCMOS33 } [get_ports {led[11]}]
set_property -dict { PACKAGE_PIN P3   IOSTANDARD LVCMOS33 } [get_ports {led[12]}]
set_property -dict { PACKAGE_PIN N3   IOSTANDARD LVCMOS33 } [get_ports {led[13]}]
set_property -dict { PACKAGE_PIN P1   IOSTANDARD LVCMOS33 } [get_ports {led[14]}]
set_property -dict { PACKAGE_PIN L1   IOSTANDARD LVCMOS33 } [get_ports {led[15]}]

## Centre button (btnC) — re-run the self-test
set_property -dict { PACKAGE_PIN U18  IOSTANDARD LVCMOS33 } [get_ports btn_start]