datasheets/examples/suservo.py

from artiq.experiment import *


class SUServoExample(EnvExperiment):
    def build(self):
        self.setattr_device("core")
        self.suservo = self.get_device("suservo0")
        self.suschannel0 = self.get_device("suservo0_ch0")

    @kernel
    def run(self):
        self.core.reset()
        self.core.break_realtime()
        self.suservo.init()
        self.suservo.set_pgia_mu(0, 0)  # unity gain
        self.suservo.cplds[0].set_att(0, 15.)
        self.suschannel0.set_y(profile=0, y=0.) # Clear integrator
        self.suschannel0.set_iir(
            profile=0,
            adc=0,          # take data from Sampler channel 0
            kp=-1.,         # -1 P gain
            ki=0./s,        # no integrator gain
            g=0.,           # no integrator gain limit
            delay=0.        # no IIR update delay after enabling
        )
        self.suschannel0.set_dds(
            profile=0,
            offset=-.3,     # 3 V with above PGIA settings
            frequency=10*MHz,
            phase=0.)
        # enable RF, IIR updates and set profile
        self.suschannel0.set(en_out=1, en_iir=1, profile=0)
        self.suservo.set_config(enable=1)