1 files changed, 63 insertions, 0 deletions
diff --git a/nmigen_boards/tinyfpga_bx.py b/nmigen_boards/tinyfpga_bx.py
new file mode 100644
index 0000000..087f6d9
--- /dev/null
+++ b/nmigen_boards/tinyfpga_bx.py
@@ -0,0 +1,63 @@
+import os
+import subprocess
+
+from nmigen.build import *
+from nmigen.vendor.lattice_ice40 import *
+
+
+__all__ = ["TinyFPGABXPlatform"]
+
+
+class TinyFPGABXPlatform(LatticeICE40Platform):
+    device     = "lp8k"
+    package    = "cm81"
+    clocks     = [
+        ("clk16", 16e6),
+    ]
+    resources  = [
+        Resource("clk16", 0, Pins("B2", dir="i"),
+                 extras={"IO_STANDARD": "SB_LVCMOS33"}),
+
+        Resource("user_led", 0, Pins("B3", dir="o"), extras={"IO_STANDARD": "SB_LVCMOS33"}),
+
+        Resource("usb", 0,
+            Subsignal("d_p",    Pins("B4", dir="io")),
+            Subsignal("d_n",    Pins("A4", dir="io")),
+            Subsignal("pullup", Pins("A3", dir="o")),
+            extras={"IO_STANDARD": "SB_LVCMOS33"}
+        ),
+
+        Resource("spiflash", 0,
+            Subsignal("cs_n", Pins("F7", dir="o")),
+            Subsignal("clk",  Pins("G7", dir="o")),
+            Subsignal("mosi", Pins("G6", dir="o")),
+            Subsignal("miso", Pins("H7", dir="i")),
+            Subsignal("wp",   Pins("H4", dir="o")),
+            Subsignal("hold", Pins("J8", dir="o")),
+            extras={"IO_STANDARD": "SB_LVCMOS33"}
+        ),
+
+        Resource("spiflash4x", 0,
+            Subsignal("cs_n", Pins("F7", dir="o")),
+            Subsignal("clk",  Pins("G7", dir="o")),
+            Subsignal("dq",   Pins("G6 H7 H4 J8", dir="io")),
+            extras={"IO_STANDARD": "SB_LVCMOS33"}
+        ),
+    ]
+    connectors = [
+        Connector("gpio", 0,
+            # Left side of the board
+            #     1  2  3  4  5  6  7  8  9 10 11 12 13
+             "   A2 A1 B1 C2 C1 D2 D1 E2 E1 G2 H1 J1 H2"
+            # Right side of the board
+            #          14 15 16 17 18 19 20 21 22 23 24
+             "         H9 D9 D8 B8 A9 B8 A8 B7 A7 B6 A6"
+            # Bottom of the board
+            # 25 26 27 28 29 30 31
+             "G1 J3 J4 G9 J9 E8 J2"),
+    ]
+
+    def toolchain_program(self, products, name):
+        tinyprog = os.environ.get("TINYPROG", "tinyprog")
+        with products.extract("{}.bin".format(name)) as bitstream_filename:
+            subprocess.run([tinyprog, "-p", bitstream_filename], check=True)