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| author | Alessandro Comodi <acomodi@antmicro.com> | 2021-07-05 13:34:34 +0200 |
|---|---|---|
| committer | gatecat <gatecat@ds0.me> | 2021-07-06 09:57:26 +0100 |
| commit | 6edc11de4de20aa5194f5cf3705a320b1891a2d6 (patch) | |
| tree | 9bc2c112922b53f3009ca8cf2b72a91607d70689 /fpga_interchange/examples | |
| parent | 8a9fb810369aeb5eed128ef4e7d4de456ef1ec8f (diff) | |
| download | nextpnr-6edc11de4de20aa5194f5cf3705a320b1891a2d6.tar.gz nextpnr-6edc11de4de20aa5194f5cf3705a320b1891a2d6.tar.bz2 nextpnr-6edc11de4de20aa5194f5cf3705a320b1891a2d6.zip | |
interchange: tests: add obuftds test
Signed-off-by: Alessandro Comodi <acomodi@antmicro.com>
Diffstat (limited to 'fpga_interchange/examples')
5 files changed, 68 insertions, 0 deletions
diff --git a/fpga_interchange/examples/tests/CMakeLists.txt b/fpga_interchange/examples/tests/CMakeLists.txt index 1d3dd72f..f8a52a41 100644 --- a/fpga_interchange/examples/tests/CMakeLists.txt +++ b/fpga_interchange/examples/tests/CMakeLists.txt @@ -6,4 +6,5 @@ add_subdirectory(ff) add_subdirectory(lut) add_subdirectory(lut_nexus) add_subdirectory(lutram) +add_subdirectory(obuftds) add_subdirectory(ram_nexus) diff --git a/fpga_interchange/examples/tests/obuftds/CMakeLists.txt b/fpga_interchange/examples/tests/obuftds/CMakeLists.txt new file mode 100644 index 00000000..0313c9bb --- /dev/null +++ b/fpga_interchange/examples/tests/obuftds/CMakeLists.txt @@ -0,0 +1,7 @@ +add_interchange_group_test( + name obuftds + family ${family} + board_list basys3 + tcl run.tcl + sources obuftds.v +) diff --git a/fpga_interchange/examples/tests/obuftds/basys3.xdc b/fpga_interchange/examples/tests/obuftds/basys3.xdc new file mode 100644 index 00000000..4b777233 --- /dev/null +++ b/fpga_interchange/examples/tests/obuftds/basys3.xdc @@ -0,0 +1,9 @@ +set_property PACKAGE_PIN V2 [get_ports sw[8] ] +set_property PACKAGE_PIN T3 [get_ports sw[9] ] +set_property PACKAGE_PIN T2 [get_ports sw[10]] +set_property PACKAGE_PIN R3 [get_ports sw[11]] + +set_property PACKAGE_PIN U19 [get_ports diff_p[0]] +set_property PACKAGE_PIN V19 [get_ports diff_n[0]] +set_property PACKAGE_PIN V13 [get_ports diff_p[1]] +set_property PACKAGE_PIN V14 [get_ports diff_n[1]] diff --git a/fpga_interchange/examples/tests/obuftds/obuftds.v b/fpga_interchange/examples/tests/obuftds/obuftds.v new file mode 100644 index 00000000..d4e9a603 --- /dev/null +++ b/fpga_interchange/examples/tests/obuftds/obuftds.v @@ -0,0 +1,37 @@ +module top( + input wire [11:8] sw, + + output wire [1:0] diff_p, + output wire [1:0] diff_n +); + +wire [1:0] buf_i; +wire [1:0] buf_t; + +OBUFTDS # ( + .IOSTANDARD("DIFF_SSTL135"), + .SLEW("FAST") +) obuftds_0 ( + .I(buf_i[0]), + .T(buf_t[0]), + .O(diff_p[0]), + .OB(diff_n[0]) +); + +OBUFTDS # ( + .IOSTANDARD("DIFF_SSTL135"), + .SLEW("FAST") +) obuftds_1 ( + .I(buf_i[1]), + .T(buf_t[1]), + .O(diff_p[1]), + .OB(diff_n[1]) +); + +assign buf_i[0] = sw[ 8]; +assign buf_t[0] = sw[ 9]; +assign buf_i[1] = sw[10]; +assign buf_t[1] = sw[11]; + +endmodule + diff --git a/fpga_interchange/examples/tests/obuftds/run.tcl b/fpga_interchange/examples/tests/obuftds/run.tcl new file mode 100644 index 00000000..b8d0df72 --- /dev/null +++ b/fpga_interchange/examples/tests/obuftds/run.tcl @@ -0,0 +1,14 @@ +yosys -import + +read_verilog $::env(SOURCES) + +synth_xilinx -nolutram -nowidelut -nosrl -nocarry -nodsp + +# opt_expr -undriven makes sure all nets are driven, if only by the $undef +# net. +opt_expr -undriven +opt_clean + +setundef -zero -params + +write_json $::env(OUT_JSON) |