add calibration serial command

frontend/serial_reader.py

@@ -7,7 +7,7 @@ from serial.tools import list_ports
 
 from .config import DEFAULT_CALIB, DEFAULT_CALIB_WEIGHT, MOV_AVG_DEFAULTS
 
-class WeightReader:
+class SerialReader:
     @property
     def value(self):
         return (self.current_raw_weight - self._tare) * self.calib_factor
@@ -20,9 +20,20 @@ class WeightReader:
     def calib_factor(self, value):
         self.calib_factor = value
         self._raw_reset_threshold = self.reset_threshold / value
+    
+    @property
+    def calibrating(self):
+        return self._calibrating
+
+    @calibrating.setter
+    def calibrating(self, value):
+        if value:
+            self.calib_window = []
+        self._calibrating = value
 
     def __init__(self):
         self.running = True
+        self._calibrating = False
         self.ports = [d.device for d in list_ports.grep('usbmodem')]
 
         self.serial = None
@@ -36,6 +47,7 @@ class WeightReader:
         self._tare = 0.0
         
         self.window = []
+        self.calib_window = []
         self.current_raw_weight = 0
         self.ignored_samples = 0
 
@@ -49,13 +61,23 @@ class WeightReader:
     def disconnect(self):
         self.serial.close()
         self.serial = None
+    
+    def reset(self):
+        if self.serial is not None:
+            self.serial.write('reset'.encode())
 
     def read_weights(self):
         while self.running:
             if self.serial is not None:
                 try:
                     line = self.serial.readline().decode('utf-8')
+                    if line.startswith('calibrated'):
+                        print('calibrated')
+                        continue
                     raw_weight = int(line.split(',')[1])
+
+                    if self._calibrating:
+                        self.calib_window.append(raw_weight)
                     
                     self.filter(raw_weight)
                 except: