Added helmholtz cage angle analysis.

src/user_interface.py

@@ -554,6 +554,7 @@ class CalibrateAmbientField(Frame):
         # Contains results for coil constant calibration
         self.coil_constant_vars = [StringVar(), StringVar(), StringVar()]
         self.coil_constant_dev_vars = [StringVar(), StringVar(), StringVar()]
+        self.coil_angle_vars = [StringVar(), StringVar(), StringVar()]
 
         row_counter = 0
 
@@ -682,6 +683,21 @@ class CalibrateAmbientField(Frame):
             axis_data.grid(row=2, column=i + 1, padx=5, pady=5, sticky="nw")
         coil_constants_dev_results_unit = Label(coil_constants_results_frame, text="\u03BCT/A")
         coil_constants_dev_results_unit.grid(row=2, column=4, padx=5, pady=5, sticky="nw")
+        # Inter-axis angle labels
+        for i, label in enumerate(['X-Y', 'Y-Z', 'X-Z']):
+            axis_label = Label(coil_constants_results_frame, text=label)
+            axis_label.grid(row=3, column=i + 1, padx=5, pady=5, sticky="nw")
+        # Inter-axis angles
+        coil_angles_label = Label(coil_constants_results_frame, text="Angles:")
+        coil_angles_label.grid(row=4, column=0, padx=5, pady=5, sticky="nw")
+        for i in range(3):
+            axis_data = Entry(coil_constants_results_frame,
+                              textvariable=self.coil_angle_vars[i],
+                              width=15,
+                              state='readonly')
+            axis_data.grid(row=4, column=i + 1, padx=5, pady=5, sticky="nw")
+        coil_angles_unit = Label(coil_constants_results_frame, text="°")
+        coil_angles_unit.grid(row=4, column=4, padx=5, pady=5, sticky="nw")
 
         # This starts an endless polling loop
         self.update_view()
@@ -749,6 +765,10 @@ class CalibrateAmbientField(Frame):
             # Remember to convert from T/A to microT/A
             self.coil_constant_vars[i].set("{:.3f}".format(results['k'][i] * 1e6))
             self.coil_constant_dev_vars[i].set("{:.3f}".format(results['k_dev'][i] * 1e6))
+        # Coil angles use dict access
+        self.coil_angle_vars[0].set("{:.2f}".format(results['angle']['xy']))
+        self.coil_angle_vars[1].set("{:.2f}".format(results['angle']['yz']))
+        self.coil_angle_vars[2].set("{:.2f}".format(results['angle']['xz']))
 
     def calibration_procedure_ambient(self):
         try:
@@ -757,7 +777,7 @@ class CalibrateAmbientField(Frame):
             self.start_ambient_calibration_button.configure(text="Running")
             self.deactivate_buttons()
         except DeviceAccessError as e:
-            print("Error starting calibration procedure: {}".format(e))
+            messagebox.showwarning("Calibration failed", "Failed to start calibration:\n{}".format(e))
 
     def calibration_procedure_coil_constants(self):
         try:
@@ -766,7 +786,7 @@ class CalibrateAmbientField(Frame):
             self.start_k_calibration_button.configure(text="Running")
             self.deactivate_buttons()
         except DeviceAccessError as e:
-            print("Error starting calibration procedure: {}".format(e))
+            messagebox.showwarning("Calibration failed", "Failed to start calibration:\n{}".format(e))
 
 
 class HardwareConfiguration(Frame):