43 lines
1.1 KiB
Python
43 lines
1.1 KiB
Python
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# Import built in I/O, Connectors & Platform template
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from migen.build.platforms.sinara.humpback import _io, _connectors, Platform
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# Import migen platform for Lattice Products
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from migen.build.lattice import LatticePlatform
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# Import migen pin record structure
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from migen.build.generic_platform import *
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# Modify the SPI record, to include all 3 CS pins
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'''
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sclk -> PA5 : C8
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mosi -> PB5 : N5
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miso -> PA6 : T2
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cs_0 -> PB12: B13
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cs_1 -> PA15: B14
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cs_2 -> PC7 : B15
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'''
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# Filter out SPI record
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_io = [record for record in _io if record[0] != "spi"]
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# Reinsert new SPI record
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_io.append(
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("spi", 0,
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Subsignal("cs" , Pins("B13 B14 B15")),
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Subsignal("sclk", Pins("C8")),
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Subsignal("mosi", Pins("N5")),
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Subsignal("miso", Pins("T2")),
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IOStandard("LVCMOS33"),
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)
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)
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# Inherit Platform to gain the programmed clock attribute
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class HumpbackPlatform(Platform):
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def __init__(self):
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LatticePlatform.__init__(self, "ice40-hx8k-ct256", _io, _connectors, toolchain="icestorm")
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# Syntax check for direct execution
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if __name__ == "__main__":
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platform = HumpbackPlatform()
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