diff options
Diffstat (limited to 'examples/gowin')
| -rw-r--r-- | examples/gowin/.gitignore | 8 | ||||
| -rw-r--r-- | examples/gowin/README | 17 | ||||
| -rw-r--r-- | examples/gowin/demo.cst | 41 | ||||
| -rw-r--r-- | examples/gowin/demo.sdc | 1 | ||||
| -rw-r--r-- | examples/gowin/demo.v | 12 | ||||
| -rw-r--r-- | examples/gowin/run.sh | 12 | ||||
| -rw-r--r-- | examples/gowin/testbench.v | 40 |
7 files changed, 131 insertions, 0 deletions
diff --git a/examples/gowin/.gitignore b/examples/gowin/.gitignore new file mode 100644 index 00000000..71030bdb --- /dev/null +++ b/examples/gowin/.gitignore @@ -0,0 +1,8 @@ +demo.bit +demo.out +demo.rpt +demo_syn.v +demo_out.v +demo_tr.html +testbench +testbench.vcd diff --git a/examples/gowin/README b/examples/gowin/README new file mode 100644 index 00000000..0194e9f0 --- /dev/null +++ b/examples/gowin/README @@ -0,0 +1,17 @@ +Simple test project for Gowinsemi GW2A-55K Eval Board Mini. + +Follow the install instructions for the Gowinsemi tools below, +then run "bash run.sh" in this directory. + + +Install instructions for gowinTool_linux +---------------------------------------- + +1.) extract gowinTool_linux.zip + +2.) set GOWIN_HOME env variable to the full path to the +gowinTool_linux directory + +3.) edit gowinTool_linux/bin/gwlicense.ini. Set lic="..." to +the full path to the license file. + diff --git a/examples/gowin/demo.cst b/examples/gowin/demo.cst new file mode 100644 index 00000000..22d7eb66 --- /dev/null +++ b/examples/gowin/demo.cst @@ -0,0 +1,41 @@ +// 50 MHz Clock +IO_LOC "clk" D11; + +// LEDs +IO_LOC "leds[0]" D22; +IO_LOC "leds[1]" E22; +IO_LOC "leds[2]" G22; +IO_LOC "leds[3]" J22; +IO_LOC "leds[4]" L22; +IO_LOC "leds[5]" L19; +IO_LOC "leds[6]" L20; +IO_LOC "leds[7]" M21; +IO_LOC "leds[8]" N19; +IO_LOC "leds[9]" R19; +IO_LOC "leds[10]" T18; +IO_LOC "leds[11]" AA22; +IO_LOC "leds[12]" U18; +IO_LOC "leds[13]" V20; +IO_LOC "leds[14]" AA21; +IO_LOC "leds[15]" AB21; + + +// 7-Segment Display +IO_LOC "seg7dig[0]" E20; +IO_LOC "seg7dig[1]" G18; +IO_LOC "seg7dig[2]" G20; +IO_LOC "seg7dig[3]" F21; +IO_LOC "seg7dig[4]" J20; +IO_LOC "seg7dig[5]" H21; +IO_LOC "seg7dig[6]" H18; +IO_LOC "seg7dig[7]" D20; +IO_LOC "seg7sel[0]" C19; +IO_LOC "seg7sel[1]" B22; +IO_LOC "seg7sel[2]" C20; +IO_LOC "seg7sel[3]" C21; + +// Switches +IO_LOC "sw[0]" AB20; +IO_LOC "sw[1]" AB19; +IO_LOC "sw[2]" AB18; +IO_LOC "sw[3]" AB17; diff --git a/examples/gowin/demo.sdc b/examples/gowin/demo.sdc new file mode 100644 index 00000000..6c90325f --- /dev/null +++ b/examples/gowin/demo.sdc @@ -0,0 +1 @@ +create_clock -name clk -period 20 -waveform {0 10} [get_ports {clk}] diff --git a/examples/gowin/demo.v b/examples/gowin/demo.v new file mode 100644 index 00000000..6ea10838 --- /dev/null +++ b/examples/gowin/demo.v @@ -0,0 +1,12 @@ +module demo ( + input clk, + input [3:0] sw, + output [15:0] leds, + output [7:0] seg7dig, + output [3:0] seg7sel +); + localparam PRESCALE = 20; + reg [PRESCALE+3:0] counter = 0; + always @(posedge clk) counter <= counter + 1; + assign leds = 1 << counter[PRESCALE +: 4]; +endmodule diff --git a/examples/gowin/run.sh b/examples/gowin/run.sh new file mode 100644 index 00000000..33a7b5c3 --- /dev/null +++ b/examples/gowin/run.sh @@ -0,0 +1,12 @@ +#!/bin/bash +set -ex +yosys -p "synth_gowin -top demo -vout demo_syn.v" demo.v +$GOWIN_HOME/bin/gowin -d demo_syn.v -cst demo.cst -sdc demo.sdc -p GW2A55-PBGA484-6 \ + -warning_all -out demo_out.v -rpt demo.rpt -tr demo_tr.html -bit demo.bit + +# post place&route simulation (icarus verilog) +if false; then + iverilog -D POST_IMPL -o testbench -s testbench testbench.v \ + demo_out.v $(yosys-config --datdir/gowin/cells_sim.v) + vvp -N testbench +fi diff --git a/examples/gowin/testbench.v b/examples/gowin/testbench.v new file mode 100644 index 00000000..6d206381 --- /dev/null +++ b/examples/gowin/testbench.v @@ -0,0 +1,40 @@ +module testbench; + reg clk; + + initial begin + #5 clk = 0; + forever #5 clk = ~clk; + end + + wire [15:0] leds; + + initial begin + // $dumpfile("testbench.vcd"); + // $dumpvars(0, testbench); + $monitor("%b", leds); + end + + demo uut ( + .clk (clk ), +`ifdef POST_IMPL + .\leds[0] (leds[0]), + .\leds[1] (leds[1]), + .\leds[2] (leds[2]), + .\leds[3] (leds[3]), + .\leds[4] (leds[4]), + .\leds[5] (leds[5]), + .\leds[6] (leds[6]), + .\leds[7] (leds[7]), + .\leds[8] (leds[8]), + .\leds[9] (leds[9]), + .\leds[10] (leds[10]), + .\leds[11] (leds[11]), + .\leds[12] (leds[12]), + .\leds[13] (leds[13]), + .\leds[14] (leds[14]), + .\leds[15] (leds[15]) +`else + .leds(leds) +`endif + ); +endmodule |