Add support for Upduino V3.

It has the same iCE40UP5k FPGA as the earlier Upduino versions but with
an expanded GPIO connector and optional QSPI capability.

1 files changed, 49 insertions, 0 deletions

diff --git a/amaranth_boards/upduino_v3.py b/amaranth_boards/upduino_v3.py
new file mode 100644
index 0000000..560844a
--- /dev/null
+++ b/amaranth_boards/upduino_v3.py
@@ -0,0 +1,49 @@
+import os
+import subprocess
+
+from amaranth.build import *
+from amaranth.vendor.lattice_ice40 import *
+from amaranth_boards.resources import *
+
+
+__all__ = ["UpduinoV3Platform"]
+
+
+class UpduinoV3Platform(LatticeICE40Platform):
+    device      = "iCE40UP5K"
+    package     = "SG48"
+    default_clk = "SB_HFOSC"
+    hfosc_div   = 0
+    resources   = [
+        # Solder the OSC jumper to connect the onboard oscillator to pin 20.
+        # Note that this overlaps with the QSPI pins.
+        Resource("clk12", 0,
+            Pins("20", dir="i"),
+            Clock(12e6), Attrs(IO_STANDARD="SB_LVCMOS")),
+
+        RGBLEDResource(0, 
+            r="41", g="39", b="40", invert=True,
+            attrs=Attrs(IO_STANDARD="SB_LVCMOS")),
+
+        # To use QSPI mode, solder the appropriate jumpers.
+        *SPIFlashResources(0,
+            cs_n="16", clk="15", cipo="17", copi="14", wp_n="10", hold_n="20",
+            attrs=Attrs(IO_STANDARD="SB_LVCMOS")
+        ),
+    ]
+    connectors  = [
+        # "Left" row of header pins (JP5 on the schematic)
+        Connector("j", 0, "41 39 40 - - - 23 25 26 27 32 35 31 37 34 43 36 42 38 28"),
+        # "Right" row of header pins (JP6 on the schematic)
+        Connector("j", 1, "20 10 - - 12 21 13 19 18 11 9 6 44 4 3 48 45 47 46 2")
+    ]
+
+    def toolchain_program(self, products, name):
+        iceprog = os.environ.get("ICEPROG", "iceprog")
+        with products.extract("{}.bin".format(name)) as bitstream_filename:
+            subprocess.check_call([iceprog, bitstream_filename])
+
+
+if __name__ == "__main__":
+    from amaranth_boards.test.blinky import *
+    UpduinoV3Platform().build(Blinky(), do_program=True)