# 约束文件使用

[kungfudaibi]

感谢@xu-zih

官方约束文件

nexys 官方约束文件

如何使用

• 比如说其中的七段数码显示

  7 segment display

  set_property -dict { PACKAGE_PIN T10 IOSTANDARD LVCMOS33 } [get_ports { CA }]; #IO_L24N_T3_A00_D16_14 Sch=ca

  set_property -dict { PACKAGE_PIN R10 IOSTANDARD LVCMOS33 } [get_ports { CB }]; #IO_25_14 Sch=cb

  set_property -dict { PACKAGE_PIN K16 IOSTANDARD LVCMOS33 } [get_ports { CC }]; #IO_25_15 Sch=cc

  set_property -dict { PACKAGE_PIN K13 IOSTANDARD LVCMOS33 } [get_ports { CD }]; #IO_L17P_T2_A26_15 Sch=cd

  set_property -dict { PACKAGE_PIN P15 IOSTANDARD LVCMOS33 } [get_ports { CE }]; #IO_L13P_T2_MRCC_14 Sch=ce

  set_property -dict { PACKAGE_PIN T11 IOSTANDARD LVCMOS33 } [get_ports { CF }]; #IO_L19P_T3_A10_D26_14 Sch=cf

  set_property -dict { PACKAGE_PIN L18 IOSTANDARD LVCMOS33 } [get_ports { CG }]; #IO_L4P_T0_D04_14 Sch=cg

  set_property -dict { PACKAGE_PIN H15 IOSTANDARD LVCMOS33 } [get_ports { DP }]; #IO_L19N_T3_A21_VREF_15 Sch=dp

  set_property -dict { PACKAGE_PIN J17 IOSTANDARD LVCMOS33 } [get_ports { AN[0] }]; #IO_L23P_T3_FOE_B_15 Sch=an[0]

  set_property -dict { PACKAGE_PIN J18 IOSTANDARD LVCMOS33 } [get_ports { AN[1] }]; #IO_L23N_T3_FWE_B_15 Sch=an[1]

  set_property -dict { PACKAGE_PIN T9 IOSTANDARD LVCMOS33 } [get_ports { AN[2] }]; #IO_L24P_T3_A01_D17_14 Sch=an[2]

  set_property -dict { PACKAGE_PIN J14 IOSTANDARD LVCMOS33 } [get_ports { AN[3] }]; #IO_L19P_T3_A22_15 Sch=an[3]

  set_property -dict { PACKAGE_PIN P14 IOSTANDARD LVCMOS33 } [get_ports { AN[4] }]; #IO_L8N_T1_D12_14 Sch=an[4]

  set_property -dict { PACKAGE_PIN T14 IOSTANDARD LVCMOS33 } [get_ports { AN[5] }]; #IO_L14P_T2_SRCC_14 Sch=an[5]

  set_property -dict { PACKAGE_PIN K2 IOSTANDARD LVCMOS33 } [get_ports { AN[6] }]; #IO_L23P_T3_35 Sch=an[6]

  set_property -dict { PACKAGE_PIN U13 IOSTANDARD LVCMOS33 } [get_ports { AN[7] }]; #IO_L23N_T3_A02_D18_14 Sch=an[7]

• 更改为我们计数器的约束文件 set_property -dict { PACKAGE_PIN T10 IOSTANDARD LVCMOS33 } [get_ports { sseg[6] }]; #IO_L24N_T3_A00_D16_14 Sch=ca set_property -dict { PACKAGE_PIN R10 IOSTANDARD LVCMOS33 } [get_ports { sseg[5] }]; #IO_25_14 Sch=cb set_property -dict { PACKAGE_PIN K16 IOSTANDARD LVCMOS33 } [get_ports { sseg[4] }]; #IO_25_15 Sch=cc set_property -dict { PACKAGE_PIN K13 IOSTANDARD LVCMOS33 } [get_ports { sseg[3] }]; #IO_L17P_T2_A26_15 Sch=cd set_property -dict { PACKAGE_PIN P15 IOSTANDARD LVCMOS33 } [get_ports { sseg[2] }]; #IO_L13P_T2_MRCC_14 Sch=ce set_property -dict { PACKAGE_PIN T11 IOSTANDARD LVCMOS33 } [get_ports { sseg[1] }]; #IO_L19P_T3_A10_D26_14 Sch=cf set_property -dict { PACKAGE_PIN L18 IOSTANDARD LVCMOS33 } [get_ports { sseg[0] }]; #IO_L4P_T0_D04_14 Sch=cg set_property -dict { PACKAGE_PIN J17 IOSTANDARD LVCMOS33 } [get_ports { an[0] }]; #IO_L23P_T3_FOE_B_15 Sch=an[0] set_property -dict { PACKAGE_PIN J18 IOSTANDARD LVCMOS33 } [get_ports { an[1] }]; #IO_L23N_T3_FWE_B_15 Sch=an[1] set_property -dict { PACKAGE_PIN T9 IOSTANDARD LVCMOS33 } [get_ports { an[2] }]; #IO_L24P_T3_A01_D17_14 Sch=an[2] set_property -dict { PACKAGE_PIN J14 IOSTANDARD LVCMOS33 } [get_ports { an[3] }]; #IO_L19P_T3_A22_15 Sch=an[3] set_property -dict { PACKAGE_PIN P14 IOSTANDARD LVCMOS33 } [get_ports { an[4] }]; #IO_L8N_T1_D12_14 Sch=an[4] set_property -dict { PACKAGE_PIN T14 IOSTANDARD LVCMOS33 } [get_ports { an[5] }]; #IO_L14P_T2_SRCC_14 Sch=an[5] set_property -dict { PACKAGE_PIN K2 IOSTANDARD LVCMOS33 } [get_ports { an[6] }]; #IO_L23P_T3_35 Sch=an[6] set_property -dict { PACKAGE_PIN U13 IOSTANDARD LVCMOS33 } [get_ports { an[7] }];

一般来说，只需要修改get_ports{}里面的内容为你代码中对应的端口