Initial Commit

script/NewFolder/MonitorScan.py

@@ -0,0 +1,50 @@
+###################################################################################################
+# Demonstrate the use of Monitor Scan: sampling based on device change event
+###################################################################################################
+
+
+#Simulating async devices:
+ai1.setPolling(50)
+ai2.setPolling(50)
+
+
+#Execute the scan: 25 samples
+r1 = mscan(ai1, [ai1], 25)
+
+#Execute the scan: 50 samples, with a timeout of 2s, including a second device, which cache is sampled
+r2 = mscan(ai1, [ai1, ai2], 50, 2.0)
+
+#Execute the scan: sampling for 5s, an undefined number of sample
+r3 = mscan(ai1, [ai1, ai2], -1, 5.0)
+
+#If a non-cached sensor access is needed, scan must be started in sync mode, but records may then be lost.
+#In this example ai1 is cached (the trigger always is), wf1 is not, and ai2 is.
+r4 = mscan(ai1, [ai1, wf1, ai2.cache], -1, 5.0, async = False)
+
+
+# Scanning a set of sensors based on a software trigger, using mscan
+import random
+
+class Trigger(ReadonlyRegisterBase):    
+    def doRead(self):
+        return None        
+        
+trigger = Trigger()
+trigger.initialize()
+
+def scan():
+    mscan(trigger, [ai1, ai2], 10)
+
+scan_task = fork(scan)
+
+time.sleep(0.5)
+for i in range(10):
+    trigger.update()
+    time.sleep(random.random()/5)
+
+ret = join(scan_task)
+
+
+#Restoring the device state
+ai1.setPolling(0)
+ai2.setPolling(0)