forked from M-Labs/artiq
wrpll: clean up matlab comparison test
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cd8c2ce713
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@ -152,31 +152,34 @@ class WRPLL(Module, AutoCSR):
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]
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def helper_sim(N=15):
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class WRPLL(Module):
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def __init__(self, N):
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self.tag_ref = Signal(N)
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self.input_stb = Signal()
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self.adpll = Signal((24, True))
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self.out_stb = Signal()
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class HelperTB(Module):
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def __init__(self, N):
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self.tag_ref = Signal(N)
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self.input_stb = Signal()
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self.adpll = Signal((24, True))
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self.out_stb = Signal()
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# # # #
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loop_filter = thls.make(filters.helper, data_width=48)
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self.submodules.loop_filter = loop_filter
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self.submodules.collector = collector = Collector(N)
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###
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self.comb += [
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self.collector.tag_ref.eq(self.tag_ref),
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self.collector.ref_stb.eq(self.input_stb),
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self.collector.main_stb.eq(self.input_stb),
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self.loop_filter.input.eq(self.collector.out_helper << 22),
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self.loop_filter.input_stb.eq(self.collector.out_stb),
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self.adpll.eq(self.loop_filter.output),
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self.out_stb.eq(self.loop_filter.output_stb),
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]
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pll = WRPLL(N=N)
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loop_filter = thls.make(filters.helper, data_width=48)
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self.submodules.loop_filter = loop_filter
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self.submodules.collector = collector = Collector(N)
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self.comb += [
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self.collector.tag_ref.eq(self.tag_ref),
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self.collector.ref_stb.eq(self.input_stb),
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self.collector.main_stb.eq(self.input_stb),
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self.loop_filter.input.eq(self.collector.out_helper << 22),
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self.loop_filter.input_stb.eq(self.collector.out_stb),
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self.adpll.eq(self.loop_filter.output),
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self.out_stb.eq(self.loop_filter.output_stb),
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]
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# check filter against output from MatLab model
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def helper_sim():
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pll = HelperTB(15)
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# check filter against output from MatLab model
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initial_helper_out = -8000
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ref_tags = np.array([
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24778, 16789, 8801, 814, 25596, 17612, 9628, 1646,
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