script/otf.py

@@ -0,0 +1,103 @@
+#Debugging
+if get_exec_pars().innerArgs is None:
+    E1 = 975
+    E2 = 985
+    TIME = 1 #min
+    DELAY = 0.0 #s
+    MODE = None #'LINEAR' #'CIRC +'
+    OFFSET = None
+    NAME = 'predefined'
+    ALPHA= None #0
+   
+
+
+print "\nStart energy scan..."
+print E1,"eV ->",E2,"eV,",TIME,"min duration,",DELAY,"sec delay,",str(MODE),(str(ALPHA)+"deg") if (MODE=="LINEAR") else ""
+
+set_exec_pars(reset=True, name= NAME)
+
+
+
+call_mscan=True
+move_mono=False  # if true, X-Tremeo runs, if false channel defiend under Ch runs 
+
+
+#Scan
+print "Start OTF"
+scan_completed = False
+
+try:
+    while True:
+        waiting = True
+                                      
+        class Time(Readable):
+            def __init__(self):
+                self.start = time.time()    
+            def read(self):        
+                return time.time()-self.start
+        tm = Time()
+        
+        class norm_tey(Readable):
+            def read(self):        
+                return float(cadc1.take())/float(cadc2.take())
+
+        class norm_diode(Readable):
+            def read(self):        
+                return float(cadc3.take())/float(cadc2.take())  
+        # define channels for PGM paramters 
+                      
+        position=sin
+                 
+
+        snaps = ()
+        diags = ()     #Must use cache because mscan evensts are called from monitor callback tread (or else  async=False). Sensors are automatically handled.
+        sensors = [position,out]       
+
+        def monitoring_task():
+            global scan_completed
+            time.sleep(3.0)
+            
+            scan_completed = True
+            print('Scan completed ' + str(get_exec_pars().currentScan))
+            global scans
+            scans.append(get_exec_pars().currentScan)
+            get_exec_pars().currentScan.abort()      
+            print('after abort ')
+
+        def before_pass(pass_num, scan):
+            print "Starting  scan: " + str(scan)
+            
+        monitoring_future = fork(monitoring_task)[0]    
+        
+        print("Scanning...\n")       
+        try:    
+            if call_mscan==True:
+                print('call mscan ')
+                mscan( position, sensors, -1, None, \
+                       range="auto",domain_axis=position.name, 
+                       snaps=snaps, diags=diags, before_pass=before_pass)
+            else:
+                print('-------------------------------------')
+                print('DO NOT CALL mscan ')
+                print('-------------------------------------') 
+            #endelse
+        finally: 
+            print('.....mscan done  ')
+            if not scan_completed:
+                print('... cancel monitoring_future..')       
+                monitoring_future.cancel(True)
+        print('monitoring is done',monitoring_future.isDone())                                   
+        print "Finished Energy scan."    
+        if after_sample(): #Repeat if id error and not ABORT_ON_ID_ERROR:
+            break
+        
+except:   
+    if not scan_completed:
+        print sys.exc_info()
+        raise
+    #endif
+#endexcept 
+print('-------DONE --------------')
+# Finally, if mon is not use 
+# return to initial position 
+