examples: add nac3devices

artiq/examples/nac3devices/nac3devices.json

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+{
+    "target": "kasli",
+    "min_artiq_version": "8.0",
+    "variant": "nac3devices",
+    "hw_rev": "v1.1",
+    "base": "standalone",
+    "core_addr": "192.168.1.70",
+    "peripherals": [
+        {
+            "type": "zotino",
+            "ports": [0]
+        },
+        {
+            "type": "urukul",
+            "dds": "ad9912",
+            "ports": [2, 3],
+            "clk_sel": 2
+        }
+    ]
+}

artiq/examples/nac3devices/nac3devices.py

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+from artiq.experiment import *
+from artiq.coredevice.core import Core
+from artiq.coredevice.zotino import Zotino
+from artiq.coredevice.urukul import CPLD
+from artiq.coredevice.ad9912 import AD9912
+
+@nac3
+class NAC3Devices(EnvExperiment):
+    core: KernelInvariant[Core]
+    zotino0: KernelInvariant[Zotino]
+    urukul0_cpld: KernelInvariant[CPLD]
+    urukul0_ch0: KernelInvariant[AD9912]
+
+    def build(self):
+        self.setattr_device("core")
+        self.setattr_device("zotino0")
+        self.setattr_device("urukul0_cpld")
+        self.setattr_device("urukul0_ch0")
+
+    @kernel
+    def run(self):
+        self.core.reset()
+        self.core.delay(1.*ms)
+        self.zotino0.init(False)
+        self.zotino0.set_leds(0x15)
+        self.core.delay(1.*ms)
+        self.zotino0.set_dac([1.2, -5.3, 3.4, 4.5], [0, 1, 2, 3])
+
+        self.core.break_realtime()
+        self.core.delay(1.*ms)
+        self.urukul0_cpld.init(False)
+        self.urukul0_ch0.init()
+        self.urukul0_ch0.sw.on()
+        for i in range(10):
+            self.urukul0_ch0.set((10. + float(i))*MHz)
+            self.urukul0_ch0.set_att(6.)
+            self.core.delay(500.*ms)