New ScreenPanel

script/Averaging.py

@@ -0,0 +1,47 @@
+################################################################################################### 
+# Scan averaging sensor value, storing all values, mean and variance
+###################################################################################################
+
+
+class AnalogInput(ReadonlyRegisterBase):
+    def doRead(self):
+        time.sleep(0.001)
+        self.val = to_array(self.calc(), 'd')
+        return self.val
+        
+class SinusoidSample(AnalogInput):
+    def calc(self):
+        self.x = self.x + 0.1 if hasattr(self, 'x') else 0.0
+        noise = (random.random() - 0.5) / 10.0
+        return math.sin(self.x)  + noise
+
+class SinusoidTime(AnalogInput):
+    def calc(self):
+        noise = (random.random() - 0.5) / 10.0
+        return math.sin(time.time())  + noise
+
+class Const(AnalogInput):
+    def calc(self):
+        return 5.0
+        
+
+add_device(SinusoidSample("ai1"), True)
+add_device(SinusoidTime("ai2"), True)
+add_device(Const("ai3"), True)
+
+av1 = create_averager(ai3, 5, -0.1)
+av2 = create_averager(ai2, 5, 0)
+
+#ai1.setPolling(10)
+#ai2.setPolling(10)
+ai3.setPolling(10)
+
+
+#av1.setMonitored(True)
+#av2.setMonitored(True)
+
+sleep(0.5) #Give some time for the averager to fill its buffer, before first use
+#res= lscan(out, (ai1, av1, av1.samples,  ai2, av2, av2.samples), 0, 40, 20, 0.1)
+res= lscan(out, ( av1, av1.samples,  av2, av2.samples), 0, 40, 20, 0.1)
+
+