aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--ice40/examples/blinky/blinky.pcf (renamed from ice40/blinky.pcf)0
-rw-r--r--ice40/examples/blinky/blinky.proj (renamed from ice40/blinky.proj)0
-rwxr-xr-xice40/examples/blinky/blinky.sh (renamed from ice40/blinky.sh)0
-rw-r--r--ice40/examples/blinky/blinky.v (renamed from ice40/blinky.v)0
-rw-r--r--ice40/examples/blinky/blinky.ys (renamed from ice40/blinky.ys)0
-rw-r--r--ice40/examples/blinky/blinky_tb.v (renamed from ice40/blinky_tb.v)0
-rw-r--r--ice40/examples/floorplan/.gitignore4
-rw-r--r--ice40/examples/floorplan/floorplan.py5
-rwxr-xr-xice40/examples/floorplan/floorplan.sh6
-rw-r--r--ice40/examples/floorplan/floorplan.v22
-rw-r--r--ice40/examples/floorplan/icebreaker.pcf5
11 files changed, 42 insertions, 0 deletions
diff --git a/ice40/blinky.pcf b/ice40/examples/blinky/blinky.pcf
index 141dfcc8..141dfcc8 100644
--- a/ice40/blinky.pcf
+++ b/ice40/examples/blinky/blinky.pcf
diff --git a/ice40/blinky.proj b/ice40/examples/blinky/blinky.proj
index f5bb9f88..f5bb9f88 100644
--- a/ice40/blinky.proj
+++ b/ice40/examples/blinky/blinky.proj
diff --git a/ice40/blinky.sh b/ice40/examples/blinky/blinky.sh
index a2326fc3..a2326fc3 100755
--- a/ice40/blinky.sh
+++ b/ice40/examples/blinky/blinky.sh
diff --git a/ice40/blinky.v b/ice40/examples/blinky/blinky.v
index 36eaee86..36eaee86 100644
--- a/ice40/blinky.v
+++ b/ice40/examples/blinky/blinky.v
diff --git a/ice40/blinky.ys b/ice40/examples/blinky/blinky.ys
index a5dd2c85..a5dd2c85 100644
--- a/ice40/blinky.ys
+++ b/ice40/examples/blinky/blinky.ys
diff --git a/ice40/blinky_tb.v b/ice40/examples/blinky/blinky_tb.v
index f80b5e64..f80b5e64 100644
--- a/ice40/blinky_tb.v
+++ b/ice40/examples/blinky/blinky_tb.v
diff --git a/ice40/examples/floorplan/.gitignore b/ice40/examples/floorplan/.gitignore
new file mode 100644
index 00000000..d93659be
--- /dev/null
+++ b/ice40/examples/floorplan/.gitignore
@@ -0,0 +1,4 @@
+*.json
+*.asc
+*.bin
+__pycache__ \ No newline at end of file
diff --git a/ice40/examples/floorplan/floorplan.py b/ice40/examples/floorplan/floorplan.py
new file mode 100644
index 00000000..85c53ccd
--- /dev/null
+++ b/ice40/examples/floorplan/floorplan.py
@@ -0,0 +1,5 @@
+ctx.createRectangularRegion("osc", 1, 1, 1, 4)
+for cell, cellinfo in ctx.cells:
+ if "ringosc" in cellinfo.attrs:
+ print("Floorplanned cell %s" % cell)
+ ctx.constrainCellToRegion(cell, "osc")
diff --git a/ice40/examples/floorplan/floorplan.sh b/ice40/examples/floorplan/floorplan.sh
new file mode 100755
index 00000000..e0ed7a64
--- /dev/null
+++ b/ice40/examples/floorplan/floorplan.sh
@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+set -ex
+yosys -p "synth_ice40 -top top -json floorplan.json" floorplan.v
+../../../nextpnr-ice40 --up5k --json floorplan.json --pcf icebreaker.pcf --asc floorplan.asc --ignore-loops --pre-place floorplan.py
+icepack floorplan.asc floorplan.bin
+iceprog floorplan.bin
diff --git a/ice40/examples/floorplan/floorplan.v b/ice40/examples/floorplan/floorplan.v
new file mode 100644
index 00000000..8f99ed4e
--- /dev/null
+++ b/ice40/examples/floorplan/floorplan.v
@@ -0,0 +1,22 @@
+module top(output LED1, LED2, LED3, LED4, LED5);
+ localparam N = 31;
+ wire [N:0] x;
+ assign x[0] = x[N];
+
+ genvar ii;
+ generate
+
+ for (ii = 0; ii < N; ii = ii + 1) begin
+ (* ringosc *)
+ SB_LUT4 #(.LUT_INIT(1)) lut_i(.I0(x[ii]), .I1(), .I2(), .I3(), .O(x[ii+1]));
+ end
+ endgenerate
+
+ assign clk = x[N];
+
+
+ reg [19:0] ctr;
+ always @(posedge clk)
+ ctr <= ctr + 1'b1;
+ assign {LED5, LED4, LED3, LED2, LED1} = ctr[19:15];
+endmodule
diff --git a/ice40/examples/floorplan/icebreaker.pcf b/ice40/examples/floorplan/icebreaker.pcf
new file mode 100644
index 00000000..ac7ebf9e
--- /dev/null
+++ b/ice40/examples/floorplan/icebreaker.pcf
@@ -0,0 +1,5 @@
+set_io -nowarn LED1 26
+set_io -nowarn LED2 27
+set_io -nowarn LED3 25
+set_io -nowarn LED4 23
+set_io -nowarn LED5 21