script/test/ExampleContinuousMultipass.py

@@ -0,0 +1,51 @@
+
+THETA_RANGE = (0.0, 5.0)
+THETA_STEP = 1.0
+PHI_RANGE = (-160.0, +160.0)
+PHI_STEP = 40.0
+
+LATENCY = 0.0
+ZIGZAG = True
+ENDSCAN = False
+MOTORS = (motor)
+SENSORS = (sin, arr,  out, inp, motor.readback)
+
+
+set_preference(Preference.PLOT_TYPES, {'Scienta spectrum':1})
+
+# time per scienta acquisition in second
+scienta_time = 0.1
+print "scienta_time: ", scienta_time
+
+
+
+# time for one theta scan in seconds
+THETA_NSTEPS = int((THETA_RANGE[1] - THETA_RANGE[0]) / THETA_STEP) + 1
+theta_time = scienta_time * THETA_NSTEPS
+print "theta_time: ", theta_time
+
+PHI_NSTEPS = int((PHI_RANGE[1] - PHI_RANGE[0]) / PHI_STEP) + 1
+phi_positions = [PHI_RANGE[0] + PHI_STEP * i for i in range(PHI_NSTEPS)]
+print "phi_positions: ", phi_positions
+
+def before_pass(pass_num, scan):
+    print "Initializing pass ", pass_num
+    phi = phi_positions[pass_num]
+    inp.write(phi)
+    print "phi = ", phi
+       
+    #phi = phi_positions[record.index/THETA_NSTEPS]
+    #ManipulatorPhi.write(phi)
+    #print "phi = ", phi
+    #ManipulatorPhi.waitValueInRange(phi, 1.0, 100)
+    
+try:
+
+        try:
+            cscan(MOTORS, SENSORS, THETA_RANGE[0], THETA_RANGE[1], THETA_NSTEPS - 1, time=theta_time, passes = len(phi_positions), zigzag = ZIGZAG, before_pass=before_pass)
+        except Exception:
+            print sys.exc_info()[1]
+    
+finally:
+    if ENDSCAN:
+        after_scan()