Status display work, Error handling for not connected devices

User_Interface.py

@@ -1,7 +1,7 @@
 from tkinter import *
 from tkinter import ttk
-import settings
-import cage_func
+import settings as g
+import cage_func as func
 import random as rand
 
 NORM_FONT = ()
@@ -19,7 +19,7 @@ class HelmholtzGUI(Tk):
         self.Menu = TopMenu(self)  # displays menu bar at the top
 
         mainArea = Frame(self)
-        mainArea.pack(side="top", fill="both", expand=True)
+        mainArea.pack(side="top", fill="both", expand=False)
 
         mainArea.grid_rowconfigure(0, weight=1)
         mainArea.grid_columnconfigure(0, weight=1)
@@ -81,25 +81,39 @@ class StatusDisplay(Frame):
             col = col + 1  # move to next column
         rowCounter = rowCounter + 1  # increase row counter to place future stuff below header
 
-        LabelTexts = ["Port:", "Channel:", "Output:"]  # define content of row entries
-        rowNo = len(LabelTexts)  # get number of label rows
-        columnNo = 3  # number of label columns
-        Labels = [[] for _ in range(columnNo)]
-        # prepare list of lists to contain all labels for row entries in all columns
+        TextLabels = ["Port:", "Channel:", "Output:"]  # define content of row entries
+        self.rowNo = len(TextLabels)  # get number of label rows
 
-        for i in range(0, rowNo):  # create label objects for row entries
-            for j in range(columnNo):
-                Labels[j].append(Label(self, text=LabelTexts[i]))
+        self.columnNo = 6  # number of label columns
+        # prepare list of lists to contain all labels for row entries in all columns:
+        self.Labels = [[] for _ in range(self.columnNo)]
+
+        self.label_dict = {}
+        for name in TextLabels:
+            self.label_dict[name] = [StringVar() for _ in range(int(self.columnNo/2))]
+            for col in range(int(self.columnNo/2)):
+                self.Labels[col*2].append(Label(self, text=name))
+                self.Labels[col*2+1].append(Label(self, textvariable=self.label_dict[name][col]))
 
         col = 0
-        for LabelCol in Labels:  # place row entries in grid layout for all columns
-            for row in range(rowNo):  # place row entries
-                LabelCol[row].grid(row=row+rowCounter, column=col*2, sticky="w")
+        for LabelCol in self.Labels:  # place row entries in grid layout for all columns
+            for row in range(self.rowNo):  # place row entries
+                LabelCol[row].grid(row=row+rowCounter, column=col, sticky="w")
             col = col + 1
-        rowCounter = rowCounter + rowNo  # increase row counter to place future stuff below this
+        rowCounter = rowCounter + self.rowNo  # increase row counter to place future stuff below this
 
-        toBeRemoved = Label(self, text="Active TBD")
-        toBeRemoved.grid(row=1, column=1)
+        self.update_labels(controller)
+
+    def update_labels(self, controller):
+        i = 0
+        for axis in g.AXES:  # ToDo: switch to proper axes when PSU connected
+            if axis.device is not None:
+                axis.update_values()
+            self.label_dict["Port:"][i].set(g.ports[i])
+            self.label_dict["Channel:"][i].set(axis.channel)
+            self.label_dict["Output:"][i].set(axis.output_active)
+            i = i+1
+        controller.after(2000, lambda: self.update_labels(controller))
 
 
 def print_stuff(stuff):
@@ -108,3 +122,15 @@ def print_stuff(stuff):
 
 def random_no():
     return rand.uniform(0, 20)
+
+
+class TestValues:
+    def __init__(self):
+        self.val1 = 0
+        self.val2 = 0
+        self.val3 = 0
+
+    def update_values(self):
+        self.val1 = rand.uniform(0, 20)
+        self.val2 = rand.uniform(0, 20)
+        self.val3 = rand.uniform(0, 20)