from artiq import * from artiq.coredevice import comm_serial, core, rtio from artiq.coredevice.runtime_exceptions import RTIOUnderflow def print_min_period(p): print("Minimum square wave output period: {} ns".format(p)) class PulsePerformance(AutoContext): o = Device("ttl_out") @kernel def run(self): T = time_to_cycles(100*ns) while True: try: for i in range(1000): self.o.pulse(cycles_to_time(T)) delay(cycles_to_time(T)) except RTIOUnderflow: T += 1 self.core.recover_underflow() else: print_min_period(int(cycles_to_time(2*T)/(1*ns))) break if __name__ == "__main__": with comm_serial.Comm() as comm: coredev = core.Core(comm) exp = PulsePerformance(core=coredev, o=rtio.RTIOOut(core=coredev, channel=2)) exp.run()