forked from M-Labs/artiq
75 lines
2.4 KiB
Python
75 lines
2.4 KiB
Python
from migen.fhdl.std import *
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from mibuild.generic_platform import *
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from misoclib import gpio
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from targets.ppro import BaseSoC
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from artiqlib import rtio, ad9858
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_tester_io = [
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("user_led", 1, Pins("B:7"), IOStandard("LVTTL")),
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("ttl", 0, Pins("C:13"), IOStandard("LVTTL")),
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("ttl", 1, Pins("C:11"), IOStandard("LVTTL")),
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("ttl", 2, Pins("C:10"), IOStandard("LVTTL")),
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("ttl", 3, Pins("C:9"), IOStandard("LVTTL")),
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("ttl", 4, Pins("C:8"), IOStandard("LVTTL")),
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("ttl_tx_en", 0, Pins("A:9"), IOStandard("LVTTL")),
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("dds", 0,
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Subsignal("a", Pins("A:5 B:10 A:6 B:9 A:7 B:8")),
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Subsignal("d", Pins("A:12 B:3 A:13 B:2 A:14 B:1 A:15 B:0")),
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Subsignal("sel", Pins("A:2 B:14 A:1 B:15 A:0")),
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Subsignal("p", Pins("A:8 B:12")),
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Subsignal("fud_n", Pins("B:11")),
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Subsignal("wr_n", Pins("A:4")),
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Subsignal("rd_n", Pins("B:13")),
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Subsignal("rst_n", Pins("A:3")),
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IOStandard("LVTTL")),
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]
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class _TestGen(Module):
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def __init__(self, pad):
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divc = Signal(15)
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ce = Signal()
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self.sync += Cat(divc, ce).eq(divc + 1)
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sr = Signal(8, reset=0b10101000)
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self.sync += If(ce, sr.eq(Cat(sr[1:], sr[0])))
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self.comb += pad.eq(sr[0])
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class ARTIQMiniSoC(BaseSoC):
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csr_map = {
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"rtio": 13
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}
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csr_map.update(BaseSoC.csr_map)
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def __init__(self, platform, cpu_type="or1k", with_test_gen=False, **kwargs):
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BaseSoC.__init__(self, platform, cpu_type=cpu_type, **kwargs)
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platform.add_extension(_tester_io)
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self.submodules.leds = gpio.GPIOOut(Cat(
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platform.request("user_led", 0),
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platform.request("user_led", 1)))
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self.comb += platform.request("ttl_tx_en").eq(1)
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rtio_pads = [platform.request("ttl", i) for i in range(4)]
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fud = Signal()
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rtio_pads.append(fud)
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self.submodules.rtiophy = rtio.phy.SimplePHY(
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rtio_pads,
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output_only_pads={rtio_pads[1], rtio_pads[2], rtio_pads[3]},
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mini_pads={fud})
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self.submodules.rtio = rtio.RTIO(self.rtiophy, self.clk_freq)
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if with_test_gen:
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self.submodules.test_gen = _TestGen(platform.request("ttl", 4))
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dds_pads = platform.request("dds")
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self.submodules.dds = ad9858.AD9858(dds_pads)
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self.add_wb_slave(lambda a: a[26:29] == 3, self.dds.bus)
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self.comb += dds_pads.fud_n.eq(~fud)
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default_subtarget = ARTIQMiniSoC
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