forked from M-Labs/nac3
pca006132
0310421085
* Cache flush should be done before playback instead when getting the handler. * `csr::rtio_dma::enable_read()` would loop forever, probably bug in the gateware.
27 lines
776 B
Python
27 lines
776 B
Python
from artiq.experiment import *
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class DMAPulses(EnvExperiment):
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def build(self):
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self.setattr_device("core")
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self.setattr_device("core_dma")
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self.setattr_device("led0")
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@kernel
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def record(self):
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with self.core_dma.record("pulses"):
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# all RTIO operations now go to the "pulses"
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# DMA buffer, instead of being executed immediately.
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self.led0.pulse(100*ns)
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delay(100*ns)
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@kernel
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def run(self):
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self.core.reset()
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self.record()
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# prefetch the address of the DMA buffer
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# for faster playback trigger
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pulses_handle = self.core_dma.get_handle("pulses")
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self.core.break_realtime()
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self.core_dma.playback_handle(pulses_handle)
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