add calibration serial command

frontend/app.py

@@ -1,13 +1,16 @@
 import tkinter as tk
 from tkinter import ttk
+from tkinter.messagebox import showinfo
 import threading
+from time import sleep
+from statistics import mean
 
-from .serial_reader import WeightReader
+from .serial_reader import SerialReader
 from .config import DEFAULT_CALIB, DISPLAY_TYPES
 from .views import NumberView
 
 class WeightApp(tk.Tk):
-    def __init__(self, weight_reader: WeightReader):
+    def __init__(self, weight_reader: SerialReader):
         super().__init__()
         self.weight_reader = weight_reader
         
@@ -48,7 +51,7 @@ class WeightApp(tk.Tk):
         self.view_type.pack()
         self.view_type_label = ttk.Label(self.view_type, text="Visual:")
         self.view_type_label.pack(side=tk.LEFT)
-        self.view_type_select = ttk.Combobox(self.view_type, values=[t.value for t in DISPLAY_TYPES], command=self.update_view)
+        self.view_type_select = ttk.Combobox(self.view_type, values=[t.value for t in DISPLAY_TYPES], postcommand=self.update_view)
         self.view_type_select.set(DISPLAY_TYPES.NUMBER.value)
         self.view_type_select.pack(side=tk.LEFT)
 
@@ -89,7 +92,7 @@ class WeightApp(tk.Tk):
     
     def update_view(self):
         selected_view = self.view_type_select.get()
-        if selected_view == DISPLAY_TYPES.NUMBER:
+        if selected_view == DISPLAY_TYPES.NUMBER.value:
             self.view = NumberView(self,
                                 tare_command=self.weight_reader.tare,
                                 calibrate_command=self.calibrate,
@@ -104,10 +107,21 @@ class WeightApp(tk.Tk):
         self.after(100, self.update_weight_display)
     
     def calibrate(self):
-        ...
+        showinfo("Calibration", "Remove all weights.")
+        self.weight_reader.reset()
+        sleep(2)
+        showinfo("Calibration", "Place Weight")
+        self.weight_reader.calibrating = True
+        sleep(30)
+        self.weight_reader.calibrating = False
+        print(self.weight_reader.calib_window)
+        self.calib_measurements.delete(0, 'end')
+        self.calib_measurements.insert(0, mean(self.weight_reader.calib_window))
+
+
 
 def main():
-    weight_reader = WeightReader()
+    weight_reader = SerialReader()
     threading.Thread(target=weight_reader.read_weights, daemon=True).start()
 
     app = WeightApp(weight_reader)