artiq/artiq/examples/master/idle_kernel.py

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from artiq.experiment import *
class IdleKernel(EnvExperiment):
def build(self):
self.setattr_device("core")
self.setattr_device("led")
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@kernel
def run(self):
start_time = now_mu() + self.core.seconds_to_mu(500*ms)
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while self.core.get_rtio_counter_mu() < start_time:
pass
self.core.reset()
while True:
self.led.pulse(250*ms)
delay(125*ms)
self.led.pulse(125*ms)
delay(125*ms)
self.led.pulse(125*ms)
delay(250*ms)