started on config file

renamed settings.py to globals.py

One_Unit_Test.py

@@ -1,7 +1,7 @@
 # import platform
 import time as t
 import numpy as np
-import settings as g
+import globals as g
 import cage_func as func
 from pyps2000b import PS2000B
 

User_Interface.py

@@ -1,6 +1,6 @@
 from tkinter import *
 from tkinter import ttk
-import settings as g
+import globals as g
 import cage_func as func
 import numpy as np
 

cage_func.py

@@ -1,6 +1,6 @@
 from pyps2000b import PS2000B
 from Arduino import Arduino
-import settings as g
+import globals as g
 import pandas
 import time
 import numpy as np
@@ -75,7 +75,7 @@ class Axis:
         else:
             self.connected = "Connected"
 
-    def print_status(self):  # axis = axis control variable, stored in settings.py
+    def print_status(self):  # axis = axis control variable, stored in globals.py
         ui_print("%s, %0.2f V, %0.2f A"
                  % (self.device.get_device_status_information(self.channel),
                     self.device.get_voltage(self.channel), self.device.get_current(self.channel)))

globals.py

@@ -1,7 +1,10 @@
 import numpy as np
+from configparser import ConfigParser
 
+# global variables set in other files
 XY_DEVICE = None
 Z_DEVICE = None
+ARDUINO = None
 
 X_AXIS = None  # object structure: (device, channel, arduino pin, axis index)
 Y_AXIS = None
@@ -9,6 +12,26 @@ Z_AXIS = None
 
 AXES = None  # list containing [X_AXIS, Y_AXIS, Z_AXIS]
 
+app = None
+
+
+def read_config(file):  # attempt to read config file
+    config_object = ConfigParser()
+    config_object.read(file)
+    print(config_object["X-Axis"]["coil_consthhh"])
+
+
+def create_config(file):
+    config = ConfigParser()
+
+    config["X-Axis"] = {
+        "coil_const": str(38.6 * 1e-6)
+    }
+
+    with open(file, 'w') as conf:
+        config.write(conf)
+
+
 # Constants:
 COIL_CONST = np.array([38.6, 38.45, 37.9]) * 1e-6  # Coil constants [x,y,z] in T/A
 AMBIENT_FIELD = np.array([30, 30, 30]) * 1e-6  # ambient magnetic field in measurement area, to be cancelled out
@@ -23,10 +46,4 @@ Z_PORT = "COM11"
 AXIS_NAMES = ["X-Axis", "Y-Axis", "Z-Axis"]
 ports = [XY_PORT, XY_PORT, Z_PORT]
 
-ARDUINO = None
-
 RELAY_PINS = [15, 16, 17]  # pin on the Arduino for switching relay of each axis [x,y,z]
-
-app = None
-
-# ToDo: make proper settings file to read from and write to

main.py

@@ -1,10 +1,18 @@
 from User_Interface import HelmholtzGUI
 import cage_func as func
 import traceback
-import settings as g
+import globals as g
 
 try:  # start normal operations
 
+    print("Reading config file...")
+    config_file = 'config.ini'
+    try:
+        g.read_config(config_file)
+    except KeyError:
+        print("Error when reading config file, creating new.")
+        g.create_config(config_file)
+
     print("Starting setup...")
     func.setup_axes()  # initiate communication, set handles
 

main_old.py

@@ -1,5 +1,5 @@
 import numpy as np
-import settings as g
+import globals as g
 import cage_func as func
 # from pyps2000b import PS2000B
 from Arduino import Arduino