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import os
import subprocess
from amaranth.build import *
from amaranth.vendor import GowinPlatform
from .resources import *
__all__ = ["TangNano9kPlatform"]
class TangNano9kPlatform(GowinPlatform):
part = "GW1NR-LV9QN88PC6/I5"
family = "GW1NR-9C"
default_clk = "clk27"
resources = [
Resource("clk27", 0, Pins("52", dir="i"),
Clock(27e6), Attrs(IO_TYPE="LVCMOS33")),
*ButtonResources(pins="3 4", invert=True,
attrs=Attrs(IO_TYPE="LVCMOS33")),
*LEDResources(pins="10 11 13 14 15 16", invert=True,
attrs=Attrs(IO_TYPE="LVCMOS33")),
UARTResource(0, rx="18", tx="17",
attrs=Attrs(PULL_MODE="UP", IO_TYPE="LVCMOS33")),
*SPIFlashResources(0,
cs_n="60", clk="59", copi="61", cipo="62",
attrs=Attrs(IO_TYPE="LVCMOS33")),
*SDCardResources(0,
clk="36", cmd="37", dat0="39", dat3="38", wp_n="-",
attrs=Attrs(IO_TYPE="LVCMOS33")),
Resource("lcd", 0,
Subsignal("clk", Pins("35", dir="o")),
Subsignal("hs", Pins("40", dir="o")),
Subsignal("vs", Pins("34", dir="o")),
Subsignal("de", Pins("33", dir="o")),
Subsignal("r", Pins("75 74 73 72 71", dir="o")),
Subsignal("g", Pins("70 69 68 57 56 55", dir="o")),
Subsignal("b", Pins("54 53 51 42 41", dir="o")),
Attrs(IO_TYPE="LVCMOS33", DRIVE=24)),
Resource("lcd_backlight", 0, Pins("86", dir="o"),
Attrs(IO_TYPE="LVCMOS33")),
Resource("hdmi", 0,
Subsignal("clk", DiffPairs(p="69", n="68", dir="o")),
Subsignal("d", DiffPairs(p="71 73 75", n="70 72 74", dir="o")),
Attrs(IO_TYPE="LVCMOS33")),
]
connectors = []
def toolchain_prepare(self, fragment, name, **kwargs):
overrides = {
"add_options":
"set_option -use_mspi_as_gpio 1 -use_sspi_as_gpio 1",
"gowin_pack_opts":
"--sspi_as_gpio --mspi_as_gpio"
}
return super().toolchain_prepare(fragment, name, **overrides, **kwargs)
def toolchain_program(self, products, name):
with products.extract("{}.fs".format(name)) as bitstream_filename:
subprocess.check_call(["openFPGALoader", "-b", "tangnano9k", bitstream_filename])
if __name__ == "__main__":
from .test.blinky import *
TangNano9kPlatform().build(Blinky(), do_program=True)
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