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fix DMA example

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This commit is contained in:
Sebastien Bourdeauducq 2020-07-30 22:25:14 +08:00
parent 2e7090a359
commit bd6222dbaf
1 changed files with 7 additions and 7 deletions
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14
examples/dma.py
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@ -8,11 +8,12 @@ class DMAPulses(EnvExperiment):
@kernel
def record(self):
with self.core_dma.record("pulses"):
# all RTIO operations now go to the "pulses"
with self.core_dma.record("pulse"):
delay(200*ms)
# all RTIO operations now go to the "pulse"
# DMA buffer, instead of being executed immediately.
self.led0.pulse(100*ns)
delay(100*ns)
self.led0.pulse(500*ms)
@kernel
def run(self):
@ -20,7 +21,6 @@ class DMAPulses(EnvExperiment):
self.record()
# prefetch the address of the DMA buffer
# for faster playback trigger
pulses_handle = self.core_dma.get_handle("pulses")
pulse_handle = self.core_dma.get_handle("pulse")
self.core.break_realtime()
self.core_dma.playback_handle(pulses_handle)
self.core_dma.playback_handle(pulse_handle)