diff options
| author | William D. Jones <thor0505@comcast.net> | 2019-06-06 08:51:47 -0400 |
|---|---|---|
| committer | whitequark <whitequark@whitequark.org> | 2019-06-06 12:51:47 +0000 |
| commit | d21c2e2e964dda2d277b069087726ab007a2d17b (patch) | |
| tree | eaa67216c12661a5458f5369e465861c9b564cd2 /nmigen_boards/icebreaker.py | |
| parent | c6e28e8cd43bf6c6e674541785402dfe5d8833cf (diff) | |
Add icebreaker platform.
Diffstat (limited to 'nmigen_boards/icebreaker.py')
| -rw-r--r-- | nmigen_boards/icebreaker.py | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/nmigen_boards/icebreaker.py b/nmigen_boards/icebreaker.py new file mode 100644 index 0000000..7993adb --- /dev/null +++ b/nmigen_boards/icebreaker.py @@ -0,0 +1,86 @@ +import os
+import subprocess
+
+from nmigen.build import *
+from nmigen.vendor.lattice_ice40 import *
+
+
+__all__ = ["ICEBreakerPlatform"]
+
+
+class ICEBreakerPlatform(LatticeICE40Platform):
+ device = "iCE40UP5K"
+ package = "SG48"
+ resources = [
+ Resource("clk12", 0, Pins("35", dir="i"),
+ Clock(12e6), Attrs(GLOBAL="1", IO_STANDARD="SB_LVCMOS33")),
+
+ Resource("user_led_n", 0, Pins("11", dir="o"), Attrs(IO_STANDARD="SB_LVCMOS33")),
+ Resource("user_led_n", 1, Pins("37", dir="o"), Attrs(IO_STANDARD="SB_LVCMOS33")),
+ # Color-specific aliases
+ Resource("user_ledr_n", 0, Pins("11", dir="o"), Attrs(IO_STANDARD="SB_LVCMOS33")),
+ Resource("user_ledg_n", 0, Pins("37", dir="o"), Attrs(IO_STANDARD="SB_LVCMOS33")),
+ Resource("user_btn_n", 4, Pins("10", dir="i"), Attrs(IO_STANDARD="SB_LVCMOS33")),
+
+ Resource("serial", 0,
+ Subsignal("rx", Pins("6", dir="i")),
+ Subsignal("tx", Pins("9", dir="o"), Attrs(PULLUP="1")),
+ Attrs(IO_STANDARD="SB_LVTTL")
+ ),
+
+ Resource("spiflash", 0,
+ Subsignal("cs_n", Pins("16", dir="o")),
+ Subsignal("clk", Pins("15", dir="o")),
+ Subsignal("mosi", Pins("14", dir="o")),
+ Subsignal("miso", Pins("17", dir="i")),
+ Subsignal("wp", Pins("12", dir="o")),
+ Subsignal("hold", Pins("13", dir="o")),
+ Attrs(IO_STANDARD="SB_LVCMOS33")
+ ),
+
+ Resource("spiflash4x", 0,
+ Subsignal("cs_n", Pins("16", dir="o")),
+ Subsignal("clk", Pins("15", dir="o")),
+ Subsignal("dq", Pins("14 17 12 13", dir="io")),
+ Attrs(IO_STANDARD="SB_LVCMOS33")
+ ),
+ ]
+ connectors = [
+ Connector("pmod", 0, "4 2 47 45 - - 3 48 46 44 - -"), # PMOD1A
+ Connector("pmod", 1, "43 38 34 31 - - 42 36 32 28 - -"), # PMOD1B
+ Connector("pmod", 2, "27 25 21 19 - - 26 23 20 18 - -"), # PMOD2
+ ]
+ # The attached LED/button section can be either used standalone or as a PMOD.
+ # Attach to platform using:
+ # p.add_resources(p.break_off_pmod)
+ # pmod_btn = plat.request("user_btn")
+ break_off_pmod = [
+ Resource("user_btn", 0, Pins("9", dir="i", conn=("pmod", 2)), Attrs(IO_STANDARD="SB_LVCMOS33")),
+ Resource("user_btn", 1, Pins("4", dir="i", conn=("pmod", 2)), Attrs(IO_STANDARD="SB_LVCMOS33")),
+ Resource("user_btn", 2, Pins("10", dir="i", conn=("pmod", 2)), Attrs(IO_STANDARD="SB_LVCMOS33")),
+
+ Resource("user_led", 0, Pins("7", dir="o", conn=("pmod", 2)), Attrs(IO_STANDARD="SB_LVCMOS33")),
+ Resource("user_led", 1, Pins("1", dir="o", conn=("pmod", 2)), Attrs(IO_STANDARD="SB_LVCMOS33")),
+ Resource("user_led", 2, Pins("2", dir="o", conn=("pmod", 2)), Attrs(IO_STANDARD="SB_LVCMOS33")),
+ Resource("user_led", 3, Pins("8", dir="o", conn=("pmod", 2)), Attrs(IO_STANDARD="SB_LVCMOS33")),
+ Resource("user_led", 4, Pins("3", dir="o", conn=("pmod", 2)), Attrs(IO_STANDARD="SB_LVCMOS33")),
+
+ # Color-specific aliases
+ Resource("user_ledr", 0, Pins("7", dir="o", conn=("pmod", 2)), Attrs(IO_STANDARD="SB_LVCMOS33")),
+ Resource("user_ledg", 0, Pins("1", dir="o", conn=("pmod", 2)), Attrs(IO_STANDARD="SB_LVCMOS33")),
+ Resource("user_ledg", 1, Pins("2", dir="o", conn=("pmod", 2)), Attrs(IO_STANDARD="SB_LVCMOS33")),
+ Resource("user_ledg", 2, Pins("8", dir="o", conn=("pmod", 2)), Attrs(IO_STANDARD="SB_LVCMOS33")),
+ Resource("user_ledg", 3, Pins("3", dir="o", conn=("pmod", 2)), Attrs(IO_STANDARD="SB_LVCMOS33"))
+ ]
+
+ def toolchain_program(self, products, name):
+ iceprog = os.environ.get("ICEPROG", "iceprog")
+ with products.extract("{}.bin".format(name)) as bitstream_filename:
+ subprocess.run([iceprog, bitstream_filename], check=True)
+
+
+if __name__ == "__main__":
+ from ._blinky import Blinky
+ p = ICEBreakerPlatform()
+ p.add_resources(p.break_off_pmod)
+ p.build(Blinky("clk12"), do_program=True)
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