From c0fb71f73f2c1e600d648cd0884081c7a86535d1 Mon Sep 17 00:00:00 2001
From: Martin Zietz <zietz@ksat-stuttgart.de>
Date: Thu, 28 Jan 2021 12:50:13 +0100
Subject: [PATCH] started on config file

renamed settings.py to globals.py
---
 One_Unit_Test.py          |  2 +-
 User_Interface.py         |  2 +-
 cage_func.py              |  4 ++--
 settings.py => globals.py | 29 +++++++++++++++++++++++------
 main.py                   | 10 +++++++++-
 main_old.py               |  2 +-
 6 files changed, 37 insertions(+), 12 deletions(-)
 rename settings.py => globals.py (68%)

diff --git a/One_Unit_Test.py b/One_Unit_Test.py
index 99d492a..a9420bd 100644
--- a/One_Unit_Test.py
+++ b/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
 
diff --git a/User_Interface.py b/User_Interface.py
index d48af3e..0f68de0 100644
--- a/User_Interface.py
+++ b/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
 
diff --git a/cage_func.py b/cage_func.py
index 51846f2..4e88973 100644
--- a/cage_func.py
+++ b/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)))
diff --git a/settings.py b/globals.py
similarity index 68%
rename from settings.py
rename to globals.py
index fd6ae92..bec9393 100644
--- a/settings.py
+++ b/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
diff --git a/main.py b/main.py
index 14b8d50..8547c2f 100644
--- a/main.py
+++ b/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
 
diff --git a/main_old.py b/main_old.py
index 1f5f244..df82b87 100644
--- a/main_old.py
+++ b/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