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from nmigen.build import *
__all__ = ["SPIFlashResources"]
def SPIFlashResources(*args, cs, clk, mosi, miso, wp=None, hold=None, attrs=None):
resources = []
io_all = []
if attrs is not None:
io_all.append(attrs)
io_all.append(Subsignal("cs", PinsN(cs, dir="o")))
io_all.append(Subsignal("clk", Pins(clk, dir="o", assert_width=1)))
io_1x = list(io_all)
io_1x.append(Subsignal("mosi", Pins(mosi, dir="o", assert_width=1)))
io_1x.append(Subsignal("miso", Pins(miso, dir="i", assert_width=1)))
if wp is not None and hold is not None:
io_1x.append(Subsignal("wp", PinsN(wp, dir="o", assert_width=1)))
io_1x.append(Subsignal("hold", PinsN(hold, dir="o", assert_width=1)))
resources.append(Resource.family(*args, default_name="spi_flash", ios=io_1x,
name_suffix="1x"))
io_2x = list(io_all)
io_2x.append(Subsignal("dq", Pins(" ".join([mosi, miso]), dir="io",
assert_width=2)))
resources.append(Resource.family(*args, default_name="spi_flash", ios=io_2x,
name_suffix="2x"))
if wp is not None and hold is not None:
io_4x = list(io_all)
io_4x.append(Subsignal("dq", Pins(" ".join([mosi, miso, wp, hold]), dir="io",
assert_width=4)))
resources.append(Resource.family(*args, default_name="spi_flash", ios=io_4x,
name_suffix="4x"))
return resources
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