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fpga_config: fix tab/space

master
occheung 2020-09-25 14:29:33 +08:00
parent b0b717fbaf
commit e77e6e66bc
1 changed files with 65 additions and 65 deletions
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130
fpga/fpga_config.py
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@ -8,85 +8,85 @@ from migen.genlib.io import *
class UrukulConnector(Module): class UrukulConnector(Module):
def __init__(self, platform): def __init__(self, platform):
# Include extension # Include extension
spi_mosi = [ spi_mosi = [
("spi_mosi", 0, Pins("B16"), IOStandard("LVCMOS33")) ("spi_mosi", 0, Pins("B16"), IOStandard("LVCMOS33"))
] ]
spi_cs = [ spi_cs = [
("spi_cs", 0, Pins("B13 B14 B15"), IOStandard("LVCMOS33")) ("spi_cs", 0, Pins("B13 B14 B15"), IOStandard("LVCMOS33"))
] ]
io_update = [ io_update = [
("io_update", 0, Pins("A11"), IOStandard("LVCMOS33")) ("io_update", 0, Pins("A11"), IOStandard("LVCMOS33"))
] ]
# Add extensions # Add extensions
platform.add_extension(spi_cs) platform.add_extension(spi_cs)
platform.add_extension(io_update) platform.add_extension(io_update)
platform.add_extension(spi_mosi) platform.add_extension(spi_mosi)
# Request EEM I/O & SPI # Request EEM I/O & SPI
eem0 = [ eem0 = [
platform.request("eem0", 0), platform.request("eem0", 0),
platform.request("eem0", 1), platform.request("eem0", 1),
# Supply EEM pin with negative polarity # Supply EEM pin with negative polarity
# See issue/PR: https://github.com/m-labs/migen/pull/181 # See issue/PR: https://github.com/m-labs/migen/pull/181
platform.request("eem0_n", 2), platform.request("eem0_n", 2),
platform.request("eem0", 3), platform.request("eem0", 3),
platform.request("eem0", 4), platform.request("eem0", 4),
platform.request("eem0", 5), platform.request("eem0", 5),
platform.request("eem0", 6) platform.request("eem0", 6)
] ]
spi = platform.request("spi") spi = platform.request("spi")
spi_mosi = platform.request("spi_mosi") spi_mosi = platform.request("spi_mosi")
spi_cs = platform.request("spi_cs") spi_cs = platform.request("spi_cs")
led = platform.request("user_led") led = platform.request("user_led")
io_update = platform.request("io_update") io_update = platform.request("io_update")
assert len(spi.clk) == 1 assert len(spi.clk) == 1
assert len(spi_mosi) == 1 assert len(spi_mosi) == 1
assert len(spi.miso) == 1 assert len(spi.miso) == 1
assert len(spi_cs) == 3 assert len(spi_cs) == 3
assert len(io_update) == 1 assert len(io_update) == 1
# Flip negative input to positive output # Flip negative input to positive output
self.miso_n = Signal() self.miso_n = Signal()
# Very similar setup to Diff setup for iCE40 suggested, but gave B pin instead # Very similar setup to Diff setup for iCE40 suggested, but gave B pin instead
self.specials += Instance("SB_IO", self.specials += Instance("SB_IO",
p_PIN_TYPE=C(0b000001, 6), p_PIN_TYPE=C(0b000001, 6),
p_IO_STANDARD="SB_LVDS_INPUT", p_IO_STANDARD="SB_LVDS_INPUT",
io_PACKAGE_PIN=eem0[2], io_PACKAGE_PIN=eem0[2],
o_D_IN_0=self.miso_n o_D_IN_0=self.miso_n
) )
# Link EEM to SPI # Link EEM to SPI
self.comb += [ self.comb += [
eem0[0].p.eq(spi.clk), eem0[0].p.eq(spi.clk),
eem0[0].n.eq(~spi.clk), eem0[0].n.eq(~spi.clk),
eem0[1].p.eq(spi_mosi), eem0[1].p.eq(spi_mosi),
eem0[1].n.eq(~spi_mosi), eem0[1].n.eq(~spi_mosi),
spi.miso.eq(~self.miso_n), spi.miso.eq(~self.miso_n),
eem0[3].p.eq(spi_cs[0]), eem0[3].p.eq(spi_cs[0]),
eem0[3].n.eq(~spi_cs[0]), eem0[3].n.eq(~spi_cs[0]),
eem0[4].p.eq(spi_cs[1]), eem0[4].p.eq(spi_cs[1]),
eem0[4].n.eq(~spi_cs[1]), eem0[4].n.eq(~spi_cs[1]),
eem0[5].p.eq(spi_cs[2]), eem0[5].p.eq(spi_cs[2]),
eem0[5].n.eq(~spi_cs[2]), eem0[5].n.eq(~spi_cs[2]),
eem0[6].p.eq(io_update), eem0[6].p.eq(io_update),
eem0[6].n.eq(~io_update), eem0[6].n.eq(~io_update),
led.eq(1) led.eq(1)
] ]
if __name__ == "__main__": if __name__ == "__main__":
platform = humpback.Platform() platform = humpback.Platform()
platform.build(UrukulConnector(platform)) platform.build(UrukulConnector(platform))