Startup

script/tutorial/02_ScanCallbacks.py

@@ -0,0 +1,20 @@
+""" 
+Demonstrate use of scan callbacks to trigger a detector at falling edge.
+"""
+
+def BeforeReadout():
+    ao1.write(1)
+    ao1.write(0)
+    
+    #Example with an epics direct channel access
+    #caput("CHANNEL_NAME", 1)
+    #caput("CHANNEL_NAME", 0)    
+
+index=0 
+
+def AfterReadout():
+    global index
+    print "Aquired frame: " + str(index)
+    index=index+1
+
+a= lscan((m1,m2), (ai1, ai2), (0,0), (4,8), steps=20, latency = 0.01, before_read=BeforeReadout, after_read=AfterReadout)