mirror of https://github.com/m-labs/artiq.git
test: relax test_dma_playback_time on Zynq
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@ -627,11 +627,13 @@ class _DMA(EnvExperiment):
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self.delta = now_mu() - start
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@kernel
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def playback_many(self, n):
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def playback_many(self, n, add_delay=False):
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handle = self.core_dma.get_handle(self.trace_name)
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self.core.break_realtime()
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t1 = self.core.get_rtio_counter_mu()
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for i in range(n):
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if add_delay:
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delay(2*us)
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self.core_dma.playback_handle(handle)
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t2 = self.core.get_rtio_counter_mu()
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self.set_dataset("dma_playback_time", self.core.mu_to_seconds(t2 - t1))
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@ -724,13 +726,18 @@ class DMATest(ExperimentCase):
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self.device_mgr.get_desc("ad9914dds0")
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except KeyError:
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raise unittest.SkipTest("skipped on Kasli for now")
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exp = self.create(_DMA)
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is_zynq = exp.core.target_cls == CortexA9Target
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count = 20000
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exp.record_many(40)
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exp.playback_many(count)
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exp.playback_many(count, is_zynq)
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dt = self.dataset_mgr.get("dma_playback_time")
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print("dt={}, dt/count={}".format(dt, dt/count))
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self.assertLess(dt/count, 4.5*us)
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if is_zynq:
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self.assertLess(dt/count, 6.2*us)
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else:
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self.assertLess(dt/count, 4.5*us)
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def test_dma_underflow(self):
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exp = self.create(_DMA)
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