agrego applet realtime y su test correspondiente

artiq_master/repository/Examples/GUI/realtime.py

+#!/usr/bin/env python3
+
+import numpy as np
+import PyQt5  # make sure pyqtgraph imports Qt5
+import pyqtgraph
+from collections import deque # CircularBuffer
+
+from artiq.applets.simple import TitleApplet
+
+
+class RTPlot(pyqtgraph.PlotWidget):
+    def __init__(self, args):
+        pyqtgraph.PlotWidget.__init__(self)
+        self.args = args
+        self.xs = None
+        self.ys = None
+        self.y2s = None
+
+    def data_changed(self, data, mods, title):
+        try:
+            y = data.get(self.args.y)[1]
+        except KeyError:
+            return
+
+        y2 = data.get(self.args.y2, (False, None))[1]
+
+        if self.xs is None:
+            # Should be only first iteration
+            num = int(self.args.num)
+            self.xs = np.arange(0., num) # Fixed x-values
+            self.ys = deque(np.full(num, 0.), num) # Y-vals are a CircBuff of len num
+            if (y2 is not None): # make extra one if y2 is passed
+                self.y2s = deque(np.full(num, 0.0), num)
+
+            return
+
+        self.ys.append(y[0])
+
+        self.clear()
+        self.plot(self.xs, self.ys, pen=None, symbol="x")
+        if y2 is not None:
+            self.y2s.append(y2[0])
+            self.plot(self.xs, self.y2s, pen=None, symbol="+", symbolPen='r')
+
+        self.setTitle(title)
+
+def main():
+    applet = TitleApplet(RTPlot)
+    applet.add_dataset("num", "Number of measures")
+    applet.add_dataset("y", "Y value")
+    applet.add_dataset("y2", "Second Y value", required=False)
+    applet.run()
+
+if __name__ == "__main__":
+    main()

artiq_master/repository/Examples/GUI/test_realtime_applet.py

+from scipy.stats import poisson
+from artiq.experiment import *
+import time
+import numpy as np
+
+class MockPMT():
+    def __init__(self):
+        pass
+
+    def count_on(self):
+        return poisson.rvs(200)
+
+    def count_off(self):
+        return poisson.rvs(10)
+
+class MedicionesReferencia(EnvExperiment):
+    """TEST DE REALTIME APPLET"""
+    def build(self):
+        self.setattr_device("ccb") # PAra armar el applet
+
+        self.setattr_argument("tau",
+                              NumberValue(1., min=1e-3, max=1., unit="s", scale=s),
+                              tooltip="Tiempo de recolección de cuentas")
+        self.pmt = MockPMT() # Emulo el PMT prendido/apagado
+
+    def create_applets(self):
+        self.ccb.issue("create_applet", "cuentas_segundo",
+                        "${artiq_applet}realtime "
+                        "200 "
+                        "count_on "
+                        "--y2 count_off")
+
+    def create_datasets(self):
+        self.set_dataset('count_on', np.full(1, np.nan), broadcast=True, archive=False)
+        self.set_dataset('count_off', np.full(1, np.nan), broadcast=True, archive=False)
+        self.set_dataset('xs', np.full(1, 0), broadcast=True, archive=False)
+
+    def run(self):
+        self.create_datasets()
+        self.create_applets()
+        while True:
+            self.mutate_dataset("count_on", 0, self.pmt.count_on())
+            self.mutate_dataset("count_off", 0, self.pmt.count_off())
+            time.sleep(self.tau)
+