add redpitaya board definition

Author: edecoux

amaranth_boards/redpitaya_125_14.py

@@ -0,0 +1,63 @@
+import os
+import subprocess
+
+from amaranth.build import *
+from amaranth.vendor import XilinxPlatform
+from .resources import *
+
+
+__all__ = ["RedPitaya14Platform"]
+
+
+class RedPitaya14Platform(XilinxPlatform):
+    device      = "xc7z010"
+    package     = "clg400"
+    speed       = "1"
+    default_clk = "clk125"
+    resources   = [
+        Resource("clk125", 0,
+            DiffPairs("U18", "U19", dir="i"), Clock(125e6), Attrs(IOSTANDARD="TMDS_33")),
+
+        *LEDResources(
+            pins="F16 F17 G15 H15 K14 G14 J15 J14",
+            attrs=Attrs(IOSTANDARD="LVCMOS33")),
+
+        Resource("daisy_io", 0,
+            DiffPairs("T12", "U12", dir="i"), Attrs(IOSTANDARD="TMDS_33")),
+        Resource("daisy_io", 1,
+            DiffPairs("U14", "U15", dir="i"), Attrs(IOSTANDARD="TMDS_33")),
+        Resource("daisy_io", 2,
+            DiffPairs("P14", "R14", dir="i"), Attrs(IOSTANDARD="TMDS_33")),
+        Resource("daisy_io", 3,
+            DiffPairs("N18", "P19", dir="i"), Attrs(IOSTANDARD="TMDS_33")),
+    ]
+    connectors = [
+            Connector("E1", 0, {
+            # Outer Analog Header
+            "dio0_p": "G17",
+            "dio0_n": "G18",
+            "dio1_p": "H16",
+            "dio1_n": "H17",
+            "dio2_p": "J18",
+            "dio2_n": "H18",
+            "dio3_p": "K17",
+            "dio3_n": "K18",
+            "dio4_p": "L14",
+            "dio4_n": "L15",
+            "dio5_p": "L16",
+            "dio5_n": "L17",
+            "dio6_p": "K16",
+            "dio6_n": "J16",
+            "dio7_p": "M14",
+            "dio7_n": "M15",
+        })
+    ]
+
+    def toolchain_program(self, products, name, **kwargs):
+        with products.extract("{}.bit".format(name)) as bitstream_filename:
+            subprocess.check_call(["openFPGALoader", "-c", "digilent_hs2", bitstream_filename])
+
+
+if __name__ == "__main__":
+    from .test.blinky import *
+    RedPitaya14Platform().build(Blinky(), do_program=True)