49 lines
1.6 KiB
Python
49 lines
1.6 KiB
Python
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import itertools
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from amaranth import *
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from amaranth.build import ResourceError
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__all__ = ["Blinky"]
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class Blinky(Elaboratable):
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def elaborate(self, platform):
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m = Module()
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def get_all_resources(name):
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resources = []
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for number in itertools.count():
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try:
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resources.append(platform.request(name, number))
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except ResourceError:
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break
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return resources
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rgb_leds = [res for res in get_all_resources("rgb_led")]
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leds = [res.o for res in get_all_resources("led")]
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leds.extend([led.r.o for led in rgb_leds])
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leds.extend([led.g.o for led in rgb_leds])
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leds.extend([led.b.o for led in rgb_leds])
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buttons = [res.i for res in get_all_resources("button")]
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switches = [res.i for res in get_all_resources("switch")]
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inverts = [0 for _ in leds]
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for index, button in zip(itertools.cycle(range(len(inverts))), buttons):
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inverts[index] ^= button
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for index, switch in zip(itertools.cycle(range(len(inverts))), switches):
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inverts[index] ^= switch
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clk_freq = platform.default_clk_frequency
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timer = Signal(range(int(clk_freq//2)), reset=int(clk_freq//2) - 1)
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flops = Signal(len(leds))
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m.d.comb += Cat(leds).eq(flops ^ Cat(inverts))
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with m.If(timer == 0):
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m.d.sync += timer.eq(timer.reset)
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m.d.sync += flops.eq(~flops)
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with m.Else():
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m.d.sync += timer.eq(timer - 1)
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return m
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