Some fixes

src/calibration.py

@@ -238,7 +238,7 @@ class CoilConstantCalibration(Thread):
 class MagnetometerCalibration(Thread):
     TEST_VECTOR_MAGNITUDE = 100e-6  # In Tesla. Chosen so it can be achieved with a 3A PSU.
 
-    def __init__(self, view_queue, calibration_points, calibration_interval,mgm_to_helmholtz_cos_trans):
+    def __init__(self, view_queue, calibration_points, calibration_interval, mgm_to_helmholtz_cos_trans):
         Thread.__init__(self)
         self.view_queue = view_queue
         self.calibration_points = calibration_points
@@ -283,8 +283,9 @@ class MagnetometerCalibration(Thread):
         self.cage_dev.set_field_compensated([0, 0, 0])
         # Sleep for a certain duration to allow psu to stabilize output and magnetometer to supply readings
         time.sleep(self.calibration_interval)
+        matrix_trans_mgm_to_hh_np = np.array(self.matrix_trans_mgm_to_hh)
         # The offsets can easily be read from the magnetometer
-        offsets = self.matrix_trans_mgm_to_hh.dot(g.MAGNETOMETER.field)
+        offsets = matrix_trans_mgm_to_hh_np.dot(g.MAGNETOMETER.field)
         # Save data point to raw_data list
         raw_data.append({'applied_x': 0, 'applied_y': 0, 'applied_z': 0,
                          'measured_x': offsets[0], 'measured_y': offsets[1], 'measured_z': offsets[2]})
@@ -308,7 +309,7 @@ class MagnetometerCalibration(Thread):
             time.sleep(self.calibration_interval)
 
             # Read output and save to array for solver later
-            raw_reading = self.matrix_trans_mgm_to_hh.dot(g.MAGNETOMETER.field)
+            raw_reading = matrix_trans_mgm_to_hh_np.dot(g.MAGNETOMETER.field)
             reading = raw_reading - offsets
             for i in range(3):
                 row = {'m': reading[i], 'b_x': applied_vec[0], 'b_y': applied_vec[1], 'b_z': applied_vec[2]}

src/user_interface.py

@@ -1281,7 +1281,7 @@ class CalibrateMagnetometer(Frame):
         # Enable save buttons
         self.export_calibration_button.configure(state="normal")
         self.copy_calibration_button.configure(state="normal")
-        self.export_mgm_button.configure(state="normal")
+        # self.export_mgm_button.configure(state="normal")
 
     def start_calibration_procedure(self):
         try:
@@ -1289,7 +1289,8 @@ class CalibrateMagnetometer(Frame):
             calibration_interval = self.calibration_interval_var.get()
             self.calibration_thread = MagnetometerCalibration(self.view_mpi_queue,
                                                               calibration_points,
-                                                              calibration_interval)
+                                                              calibration_interval,
+                                                              self.mgm_to_helmholtz_cos_trans)
             self.calibration_thread.start()
             self.deactivate_buttons()
         except (DeviceAccessError, TclError) as e: