suservo: add sampler example

artiq/examples/kasli_suservo/repository/sampler.py

@@ -0,0 +1,35 @@
+from artiq.experiment import *
+
+
+class Sampler(EnvExperiment):
+    def build(self):
+        self.setattr_device("core")
+        self.setattr_device("sampler0")
+
+    def run(self):
+        self.data = []
+        self.sample()
+        for d in self.data:
+            print(d)
+
+    @kernel
+    def sample(self):
+        self.core.break_realtime()
+        self.sampler0.init()
+        for g in range(4):
+            for ch in range(8):
+                self.sampler0.set_gain_mu(ch, g)
+            self.ret([self.sampler0.get_gains_mu()])
+            delay(10*ms)
+            raw = [0] * 8
+            self.sampler0.sample_mu(raw)
+            self.ret(raw)
+            delay(10*ms)
+            data = [0.] * 8
+            self.sampler0.sample(data)
+            self.ret(data)
+            delay(10*ms)
+
+    @rpc(flags={"async"})
+    def ret(self, data):
+        self.data.append(data)