dds RAM mode test experiment

dds_ram_test.py

from artiq.experiment import *
import numpy as np


class DDSTest(EnvExperiment):
    def build(self):
        self.setattr_device("core")
        self.setattr_device("core_dma")
        self.setattr_device("led0")
        self.setattr_device("ttl4")
        self.setattr_device("urukul0_cpld")
        self.setattr_device("urukul0_ch0")

    @kernel
    def record(self):
        with self.core_dma.record("pulses"):
            words = self.urukul0_ch0.set_ram_profile_mu(
                wvfm_start=0,
                wvfm_end=100,
                addr_step_rate=400,
                mode=3,
                profile=0
            )
            amps = [0.99/words]*words
            for i in range(len(amps)-1):
                amps[i+1] += amps[i]
            self.urukul0_ch0.write_ram_amps(amps, words)

    @kernel
    def run(self):
        self.core.reset()
        self.led0.off()
        self.urukul0_cpld.init()
        self.urukul0_ch0.init()
        self.led0.on()
        self.ttl4.output()
        self.ttl4.off()
        self.urukul0_ch0.set_ftw(3e6)
        self.urukul0_ch0.sw.on()

        self.record()
        pulses_handle = self.core_dma.get_handle("pulses")
        self.core.break_realtime()
        self.core_dma.playback_handle(pulses_handle)

        # words = self.urukul0_ch0.set_ram_profile_mu(
        #     wvfm_start=0,
        #     wvfm_end=100,
        #     addr_step_rate=400,
        #     mode=3,
        #     profile=0
        # )
        # amps = [0.99/words]*words
        # for i in range(len(amps)-1):
        #     amps[i+1] += amps[i]
        # self.urukul0_ch0.write_ram_amps(amps, words)

        self.urukul0_cpld.io_update.pulse(10*ns)
        self.urukul0_ch0.set_ram_mode(1,2)
        self.urukul0_cpld.io_update.pulse(10*ns)
        self.ttl4.pulse(1*us)

        delay(10*ms)

        self.urukul0_ch0.sw.off()