artiq/benchmarks/pulse_rate.py

from artiq import *
from artiq.coredevice.runtime_exceptions import RTIOUnderflow


class PulseRate(Experiment, AutoDB):
    """Sustained pulse rate"""

    class DBKeys:
        core = Device()
        ttl0 = Device()
        pulse_rate = Result()

    @kernel
    def run(self):
        T = time_to_cycles(100*ns)
        while True:
            try:
                for i in range(1000):
                    self.ttl0.pulse(cycles_to_time(T))
                    delay(cycles_to_time(T))
            except RTIOUnderflow:
                T += 1
                self.core.break_realtime()
            else:
                self.pulse_rate = cycles_to_time(2*T)
                break