creation of registrace.py application, upload time to website in StopWatch

SW/PC/Alkator_count_results.py

@@ -16,7 +16,7 @@ results = {}
 with open(FILE,'r') as f:
     file_content = f.read()
     data_dict = json.loads(file_content)
-    
+
 for id in data_dict:
     laps = int(data_dict[id]['laps'])
     time = 0
@@ -26,12 +26,7 @@ for id in data_dict:
     print(data_dict[id]['name'],time)
     data_dict[id]['total_time'] = time
     results[data_dict[id]['name']] = time
-    
+
 print(results)
 dict(sorted(results.items(), key=lambda item: item[0]))
 print(results)
-
-    
-
-    
-        

SW/PC/Stopwatch/config.json

@@ -0,0 +1,10 @@
+{
+    "url": "https://beta.alkator.cz/api/station/register",
+    "station_id": "1",
+    "login_url": "https://beta.alkator.cz/api/login",
+    "racers_url": "https://beta.alkator.cz/api/racers",
+    "card_register": "https://beta.alkator.cz/api/card/register",
+    "card_unregister": "https://beta.alkator.cz/api/card/card_unregister",
+    "login": "station_register@alkator.cz",
+    "password": "password_heslo"
+}

SW/PC/Stopwatch/main.py

@@ -1,6 +1,8 @@
 import gi
 import threading
 import time
+import datetime
+import collections
 import usb.core
 import usb.util
 import requests
@@ -9,13 +11,7 @@ import json
 gi.require_version('Gtk', '4.0')
 from gi.repository import Gtk, Gio, Gdk
 
-DEBUG = False
+activeCards = []
-
-if DEBUG == True:
-    index = 2
-else:
-    index = 1
-activeCards = []    
 
 TIME = 600
 
@@ -24,8 +20,56 @@ USB_TIMEOUT = 5 # Timeout in ms
 USB_VENDOR  = 0xffff # Vendor-ID:
 USB_PRODUCT = 0x0035 # Product-ID
 
-with open('people.json', 'r') as f:
+db = {}
-    db = json.load(f)
+
+queue_to_send = []
+
+with open('config.json', 'r') as f:
+    config = json.load(f)
+
+session = requests.Session()
+session.post(config['login_url'], {'email':config['login'], 'password': config['password']})
+
+def refreshDb():
+    global db
+    resp = session.get(config['racers_url'])
+    if resp.status_code == 200:
+        json = resp.json()
+        db = {}
+        for racer in json:
+            if racer["card_id"]:
+                db[racer["card_id"]] = racer
+
+
+def refreshDbEvery3mins():
+    while True:
+        refreshDb()
+        time.sleep(3 * 60)
+
+
+Thread(target=refreshDbEvery3mins).start()
+
+
+def sendQueueToSend():
+    global queue_to_send
+    while True:
+        if len(queue_to_send) > 0:
+            to_send = queue_to_send.pop()
+
+            response = session.post(config['url'],
+                to_send, 'application/json'
+            )
+            if response.status_code != 200:
+                if response.status_code == 400:
+                    continue
+                queue_to_send.append(to_send) #try again later
+                time.sleep(1)
+        else:
+            time.sleep(1)
+
+
+Thread(target=sendQueueToSend).start()
+
 
 class UsbCardReader():
     def __init__(self, **kargs):
@@ -38,16 +82,16 @@ class UsbCardReader():
         # Claim the device
         usb.util.claim_interface(self.dev, USB_IF)
         self.receivedNumber = 0
-        
+
         cardread=threading.Thread(target=self.read)
         cardread.start()
-        
+
     def read(self):
         global win, activeCards, db
-        
+
         print("Waiting for card")
         receivedNumber = 0
-        
+
         while True:
             control = None
             try:
@@ -57,59 +101,65 @@ class UsbCardReader():
                     if receivedDigit == 10:
                         receivedDigit = 0
                     receivedNumber = 10 * receivedNumber + receivedDigit
-                    
+
                 if (( control[0] == 0 )) & (( control[2] == 40 )) & (( not receivedNumber == 0 )):
-                    try:
+                    if receivedNumber not in db:
-                        with open('people.json', 'r') as f:
+                        refreshDb()
-                            db = json.load(f)
+                    if receivedNumber in db:
-                        for i in db:
+                        if receivedNumber not in activeCards:
-                            if db[i] == receivedNumber:
+                            activeCards.append(receivedNumber)
-                                if i not in activeCards:
+                            win.arb(db[receivedNumber])
-                                    activeCards.append(i)
+                            print('Card is active now')
-                                    win.arb(i)
+                        else:
-                                else:
+                            print('Card is already active')
-                                    print("Card is active now")
+                    else:
-                    except Exception as e: print(e)
+                        print(f'Card {receivedNumber} not found in db')
                     receivedNumber = 0
-                    
+
             except KeyboardInterrupt:
                 exit()
             except:
                 pass
-            
+
             time.sleep(0.001)
 
 class GridRow():
-    def __init__(self, parent, runner, index):
+    def __init__(self, parent, racer, index):
-        self.id = runner
+        global queue_to_send
-        self.index = index
+        self.id = racer['starting_number']
         self.parent = parent
-        
+
         self.grid = Gtk.Grid()
-        
+
         if index % 2 == 0:
             self.grid.set_name("lightgrid")
         else:
             self.grid.set_name("darkgrid")
-        
+
-        self.runid = Gtk.Label(label=str(runner), name="gridlabel")
+        self.runid = Gtk.Label(label=str(racer["starting_number"]), name="gridlabel")
         self.runid.set_justify(2)
         self.runid.set_width_chars(10)
-        
+
         self.runb = Gtk.Label(label='00:00', name="gridlabel")
         self.runb.set_hexpand(1)
-        
+
         self.grid.attach(self.runid, 0, 0, 1, 1)
         self.grid.attach(self.runb, 1, 0, 1, 1)
-        
+
         parent.grid.attach(self.grid, 0, index, 2, 1)
-        
+
         countdown=threading.Thread(target=self.updateTime)
         countdown.start()
-        
+
+        queue_to_send.append({
+            'card_id': racer['card_id'],
+            'station_id': config['station_id'],
+            'time': datetime.datetime.now().strftime('%d.%m.%Y %H:%M:%S.%f')
+        })
+
     def printIndex(self, button):
         print(self.index)
-        
+
     def updateTime(self):
         t = TIME
         while t >= -10:
@@ -120,70 +170,54 @@ class GridRow():
                 mins, secs = divmod(t, 60)
                 timer = '{:02d}:{:02d}'.format(mins, secs)
             self.runb.set_label(timer)
-            time.sleep(1) 
+            time.sleep(1)
             t -= 1
             if t == 10:
                 if self.grid.get_name() == "lightgrid":
                     self.grid.set_name("lredgrid")
                 else:
                     self.grid.set_name("dredgrid")
-            
+
         GridWindow.remRow(self.parent)
 
 class GridWindow(Gtk.ApplicationWindow):
     def __init__(self, **kargs):
         super().__init__(**kargs, title='Alkator Clock')
-        
+
         css_provider = Gtk.CssProvider()
         css_provider.load_from_file(Gio.File.new_for_path("style.css"))
         Gtk.StyleContext.add_provider_for_display(Gdk.Display.get_default(), css_provider, Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION)
 
-        button1 = Gtk.Button(label='addrow')
-        button2 = Gtk.Button(label='rmrow')
-        
-        button1.connect("clicked", self.arb)
-        button2.connect("clicked", self.rrb)
-        
         runlabel = Gtk.Label(label="ID", name="gridlabel")
         runlabel.set_justify(2)
         cntlabel = Gtk.Label(label="Countdown", name="gridlabel")
         cntlabel.set_justify(2)
-        
+
         self.runners = []
 
         self.grid = Gtk.Grid()
-        if DEBUG == True:
+        self.grid.attach(runlabel, 0, 0, 1, 1)
-            self.grid.attach(button1, 0, 0, 1, 1)
+        self.grid.attach(cntlabel, 1, 0, 2, 1)
-            self.grid.attach(button2, 1, 0, 2, 1)
-            self.grid.attach(runlabel, 0, 1, 1, 1)
-            self.grid.attach(cntlabel, 1, 1, 2, 1)
-        else:
-            self.grid.attach(runlabel, 0, 0, 1, 1)
-            self.grid.attach(cntlabel, 1, 0, 2, 1)
 
         self.set_child(self.grid)
-        
+
-    def arb(self, personId):
+    def arb(self, racer):
-        global index
+        self.runners.append(GridRow(self, racer, len(activeCards)))
-        self.runners.append(GridRow(self, personId, index))
+
-        index += 1
-        
     def rrb(self, button):
-        global index
         self.remRow()
-        
+
     def addRow(self, runner, index):
         runid = Gtk.Label(label=str(runner))
         runb = Gtk.Button(label='time_placeholder')
-        
+
         self.grid.attach(runid, 0, index, 1, 1)
         self.grid.attach(runb, 1, index, 1, 1)
-        
+
     def remRow(self):
-        global index, activeCards
+        global activeCards
-        if index > 1:
+        if len(activeCards) > 0:
             self.grid.remove_row(1)
-            index -= 1
             del activeCards[0]
 
 

SW/PC/Stopwatch/registrace.py

@@ -0,0 +1,134 @@
+import sys
+import datetime
+import requests
+import json
+import usb.core
+import usb.util
+from PyQt6 import QtWidgets, uic, QtGui
+
+app = QtWidgets.QApplication(sys.argv)
+
+TIME = 600
+
+USB_IF      = 0 # Interface
+USB_TIMEOUT = 5 # Timeout in ms
+USB_VENDOR  = 0xffff # Vendor-ID:
+USB_PRODUCT = 0x0035 # Product-ID
+
+with open('config.json', 'r') as f:
+    config = json.load(f)
+
+session = requests.Session()
+session.post(config['login_url'], {'email':config['login'], 'password': config['password']})
+
+
+last_card = 1111
+last_time = datetime.datetime.now()
+
+
+response = session.get(config['racers_url'])
+
+racers = response.json()
+
+
+def register_racer():
+    card_id = last_card
+    index = window.racers.currentIndex()
+    racer_id = int(index.data().split(' ')[-1])
+    try:
+        starting_number = int(window.starting_number.text())
+    except Exception:
+        raise
+
+    response = session.post(config['card_register'], json={'racer_id': racer_id, 'starting_number': starting_number, 'card_id': last_card})
+    if response.status_code != 200:
+        raise Exception(response.status_code, response.content)
+
+    racer = list(filter(lambda x: x['racer_id'] == racer_id, racers))[0]
+    racer['card_id'] = card_id
+    racer['starting_number'] = starting_number
+    updateRacers()
+
+
+def unregister_racer():
+    card_id = last_card
+    time = last_time
+
+    response = session.post(config['url'], json={'card_id': card_id, 'time': time.strftime('%d.%m.%Y %H:%M:%S.%f'), 'station_id': config['station_id']})
+
+
+
+
+window = uic.loadUi("registrace.ui")
+window.register_racer.clicked.connect(register_racer)
+window.unregister_racer.clicked.connect(unregister_racer)
+window.show()
+
+
+model = QtGui.QStandardItemModel()
+window.racers.setModel(model)
+
+def updateRacers():
+    model.clear()
+    for racer in racers:
+        if racer['starting_number'] or racer['card_id']:
+            continue
+        item = QtGui.QStandardItem(f"{racer['last_name']} {racer['first_name']} {racer['date_of_birth']} {racer['racer_id']}")
+        model.appendRow(item)
+
+
+updateRacers()
+
+
+def updateLastCard(card_id):
+    window.lastCard.setText(str(card_id))
+
+
+class UsbCardReader():
+    def __init__(self, **kargs):
+        # Find the HID device by vendor/product ID
+        self.dev = usb.core.find(idVendor=USB_VENDOR, idProduct=USB_PRODUCT)
+        # Get and store the endpoint
+        self.endpoint = self.dev[0][(0,0)][0]
+        if self.dev.is_kernel_driver_active(USB_IF) is True:
+            self.dev.detach_kernel_driver(USB_IF)
+        # Claim the device
+        usb.util.claim_interface(self.dev, USB_IF)
+        self.receivedNumber = 0
+
+        cardread=threading.Thread(target=self.read)
+        cardread.start()
+
+    def read(self):
+        global last_card, last_time
+
+        print("Waiting for card")
+        receivedNumber = 0
+
+        while True:
+            control = None
+            try:
+                control = self.dev.read(self.endpoint.bEndpointAddress, self.endpoint.wMaxPacketSize, USB_TIMEOUT)
+                if (control[2] != 40) & (control[2] != 0):
+                    receivedDigit = control[2] - 29
+                    if receivedDigit == 10:
+                        receivedDigit = 0
+                    receivedNumber = 10 * receivedNumber + receivedDigit
+
+                if (( control[0] == 0 )) & (( control[2] == 40 )) & (( not receivedNumber == 0 )):
+                    updateLastCard(receivedNumber)
+                    if last_card != receivedNumber:
+                        last_time = datetime.datetime.now()
+                    last_card = receivedNumber
+                    receivedNumber = 0
+
+            except KeyboardInterrupt:
+                exit()
+            except:
+                pass
+
+            time.sleep(0.001)
+
+UsbCardReader()
+
+app.exec()

SW/PC/Stopwatch/registrace.ui

@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Frame</class>
+ <widget class="QFrame" name="Frame">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>315</width>
+    <height>289</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Registrace závodníků</string>
+  </property>
+  <layout class="QGridLayout" name="gridLayout">
+   <item row="5" column="0">
+    <widget class="QLineEdit" name="lastCard"/>
+   </item>
+   <item row="0" column="0">
+    <widget class="QPushButton" name="register_racer">
+     <property name="text">
+      <string>Registrovat</string>
+     </property>
+    </widget>
+   </item>
+   <item row="3" column="0">
+    <widget class="QPushButton" name="unregister_racer">
+     <property name="text">
+      <string>Dokončit</string>
+     </property>
+    </widget>
+   </item>
+   <item row="2" column="0">
+    <widget class="QLineEdit" name="starting_number"/>
+   </item>
+   <item row="1" column="0">
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>startovní číslo</string>
+     </property>
+    </widget>
+   </item>
+   <item row="4" column="0">
+    <widget class="QLabel" name="label_2">
+     <property name="text">
+      <string>číslo karty</string>
+     </property>
+    </widget>
+   </item>
+   <item row="6" column="0">
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item row="0" column="1" rowspan="7">
+    <widget class="QListView" name="racers"/>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

SW/PC/Stopwatch/rfid_read.py

@@ -1,51 +1,51 @@
-import usb.core 
+import usb.core
-import usb.util 
+import usb.util
-import time 
+import time
-import requests 
+import requests
 import json
- 
+
-USB_IF      = 0 # Interface 
+USB_IF      = 0 # Interface
-USB_TIMEOUT = 5 # Timeout in MS 
+USB_TIMEOUT = 5 # Timeout in MS
-USB_VENDOR  = 0xffff # Vendor-ID:  
+USB_VENDOR  = 0xffff # Vendor-ID:
-USB_PRODUCT = 0x0035 # Product-ID 
+USB_PRODUCT = 0x0035 # Product-ID
- 
+
 # Find the HID device by vender/product ID
-dev = usb.core.find(idVendor=USB_VENDOR, idProduct=USB_PRODUCT) 
+dev = usb.core.find(idVendor=USB_VENDOR, idProduct=USB_PRODUCT)
- 
+
-# Get and store the endpoint 
+# Get and store the endpoint
-endpoint = dev[0][(0,0)][0] 
+endpoint = dev[0][(0,0)][0]
- 
+
-if dev.is_kernel_driver_active(USB_IF) is True: 
+if dev.is_kernel_driver_active(USB_IF) is True:
-    dev.detach_kernel_driver(USB_IF) 
+    dev.detach_kernel_driver(USB_IF)
- 
+
-# Claim the device 
+# Claim the device
-usb.util.claim_interface(dev, USB_IF) 
+usb.util.claim_interface(dev, USB_IF)
- 
+
-receivedNumber = 0 
+receivedNumber = 0
-while True: 
+while True:
-    control = None 
+    control = None
-     
+
-    try: 
+    try:
-        # Read a character from the device 
+        # Read a character from the device
         control = dev.read(endpoint.bEndpointAddress, endpoint.wMaxPacketSize, USB_TIMEOUT)
         # Here you have to analyze what's coming in.
         # In my case you had to check the first byte (command)
         if (control[2] != 40) & (control[2] != 0):
             # Convert ascii to a number, there's probably better ways to do so.
             receivedDigit = control[2] - 29
-        
+
-            if receivedDigit == 10: 
+            if receivedDigit == 10:
                 receivedDigit = 0
-                
+
             # Append the digit to the number
-            receivedNumber = 10 * receivedNumber + receivedDigit 
+            receivedNumber = 10 * receivedNumber + receivedDigit
-        
+
         # Check if the received character is CRLF
-        if (( control[0] == 0 )) & (( control[2] == 40 )) & (( not receivedNumber == 0 )): 
+        if (( control[0] == 0 )) & (( control[2] == 40 )) & (( not receivedNumber == 0 )):
             print('cardNumber:', receivedNumber)
-    except KeyboardInterrupt: 
+    except KeyboardInterrupt:
         exit()
-    except: 
+    except:
-        pass 
+        pass
-     
+
-    time.sleep(0.001) # Let CTRL+C actually exit 
+    time.sleep(0.001) # Let CTRL+C actually exit

SW/PC/Stopwatch/start_finish_stopwatch.py

@@ -12,7 +12,7 @@ if DEBUG == True:
     index = 2
 else:
     index = 1
-activeCards = []    
+activeCards = []
 
 TIME = 600
 
@@ -53,16 +53,16 @@ class UsbCardReader():
         # Claim the device
         usb.util.claim_interface(self.dev, USB_IF)
         self.receivedNumber = 0
-        
+
         cardread=threading.Thread(target=self.read)
         cardread.start()
-        
+
     def read(self):
         global activeCards, db, times, times_json
-        
+
         print("Waiting for card")
         receivedNumber = 0
-        
+
         while True:
             control = None
             try:
@@ -72,7 +72,7 @@ class UsbCardReader():
                     if receivedDigit == 10:
                         receivedDigit = 0
                     receivedNumber = 10 * receivedNumber + receivedDigit
-                    
+
                 if (( control[0] == 0 )) & (( control[2] == 40 )) & (( not receivedNumber == 0 )):
                     try:
                         with open('people.json', 'r') as f:
@@ -99,12 +99,12 @@ class UsbCardReader():
                                 print(times)
                     except Exception as e: print(e)
                     receivedNumber = 0
-                    
+
             except KeyboardInterrupt:
                 exit()
             except:
                 pass
-            
+
             time.sleep(0.001)
 
 UsbCardReader()

SW/PC/Stopwatch/zapis_zavodniku.py

@@ -29,12 +29,12 @@ class UsbCardReader():
         # Claim the device
         usb.util.claim_interface(self.dev, USB_IF)
         self.receivedNumber = 0
-        
+
     def read(self):
         global activeCards
-        
+
         print("Priloz kartu")
-        
+
         while True:
             control = None
             try:
@@ -44,7 +44,7 @@ class UsbCardReader():
                     if receivedDigit == 10:
                         receivedDigit = 0
                     self.receivedNumber = 10 * self.receivedNumber + receivedDigit
-                    
+
                 if (( control[0] == 0 )) & (( control[2] == 40 )) & (( not self.receivedNumber == 0 )):
                     try:
                         cardPresent = False
@@ -60,24 +60,24 @@ class UsbCardReader():
                             self.receivedNumber = 0
                             print("Priloz kartu")
                     except Exception as e: print(e)
-                    
+
             except KeyboardInterrupt:
                 exit()
             except:
                 pass
-            
+
             time.sleep(0.001)
 
     def assign(self):
         global activeCards
-        
+
         n = input("Cislo zavodnika: ")
         activeCards[str(n)] = self.receivedNumber
         with open('people.json', 'w') as f:
             f.write(json.dumps(activeCards, indent = 4))
             self.receivedNumber = 0
         print("Ulozeno, priloz kartu")
-            
+
 if __name__ == "__main__":
     reader = UsbCardReader()
     print("Zapis zavodniku ready")

SW/PC/main.py

@@ -46,17 +46,17 @@ def read(ser):
                 lap += 1
                 data_dict[data[0]]['laps'] = lap
                 data_dict[data[0]]['time'] = get_seconds()
-                
+
             except:
                 data_dict[data[0]] = {'name': data[1]}
                 data_dict[data[0]]['time'] = get_seconds()
                 data_dict[data[0]]['laps'] = 0
-            
+
             data_json = json.dumps(data_dict, indent=4)
             print(data_json)
             with open(JSON_PATH, 'w') as file:
                 file.write(data_json)
-                
+
 def write(ser):
     while True:
         data = input('ID:')
@@ -77,10 +77,10 @@ def write(ser):
 def main():
     s = serial.Serial(port="/dev/ttyACM3", parity=serial.PARITY_EVEN, stopbits=serial.STOPBITS_ONE, timeout=1)
     s.flush()
-    
+
     rw = input('Read or Write tags? [R/w]')
     rw = rw.lower()
-    
+
     if rw == 'w':
         s.write('w\r'.encode())
         write(s)
@@ -90,12 +90,11 @@ def main():
     elif rw == '':
         s.write('r\r'.encode())
         read(s)
-        
     else:
         print('Invalid option')
 
-    
 
 
-if __name__ == "__main__":  
+
+if __name__ == "__main__":
         main()

SW/RPi_Pico_Button/main.py

@@ -56,13 +56,13 @@ def loop_neopixel():
     led_strip.fill(color)
     led_strip.write()
     time.sleep(1)
-    
+
 neopix_loop_dot_pos = 0
 def neopixel_loop_dot():
     global neopix_loop_dot_pos
     color = (255, 0, 0)
     black = (0, 0, 0)
-    
+
     color = set_neopixel_brightness(color)
     led_strip[neopix_loop_dot_pos] = black
     neopix_loop_dot_pos += 1
@@ -71,16 +71,16 @@ def neopixel_loop_dot():
     led_strip[neopix_loop_dot_pos] = color
     led_strip.write()
     time.sleep(0.2)
-    
+
 def lightup_led(index, color):
     led_strip[index] = color
     led_strip.write()
-    
+
 def blink_and_beep(times):
     global pushbutton_pressed, blink_interrupted
-    
+
     blink_delay = 0.2
-    
+
     #insert beep
     buzzer.value(1)
     for i in range(0, times):
@@ -97,20 +97,20 @@ def blink_and_beep(times):
             buzzer.value(0)
             return
     buzzer.value(0)
-    
+
 ten_min_timer = 0
 ten_min_timer_led_index = 11
 def count_10_min():
     global ten_min_timer, ten_min_timer_led_index, pushbutton_pressed, blink_interrupted
-    
+
     red = (255, 0, 0)
     red = set_neopixel_brightness(red)
     green = (0, 255, 0)
     green = set_neopixel_brightness(green)
-    
+
     if ten_min_timer_led_index == 11:
         return
-    
+
     if (ten_min_timer % 60) == 0:
         if ten_min_timer_led_index == 10:
             pushbutton_pressed = 0
@@ -128,7 +128,7 @@ def count_10_min():
             return
         lightup_led(ten_min_timer_led_index, red)
         ten_min_timer_led_index += 1
-        
+
     ten_min_timer += 1
 
 def button_callback(push_button):

SW/RPi_Pico_Reader/NFC_PN532.py

@@ -406,4 +406,3 @@ class PN532:
             _COMMAND_INDATAEXCHANGE, params=params, response_length=1
         )
         return response[0] == 0x00
-

SW/RPi_Pico_Reader/main.py

@@ -84,12 +84,12 @@ def read_nfc_loop():
         # Try again if no card is available.
         if uid is not None:
             break
-    
+
     set_neopixel_color(255,255,0)
-        
+
     ntag_string = 'Data: '
     sys.stdout.write('Reading ntag                      \r')
-    
+
     leds_on = 0
     for page in range(20,40):
         try:
@@ -105,7 +105,7 @@ def read_nfc_loop():
                     if leds_on > 7:
                         leds_on = 7
                     led_strip.write()
-        
+
             if ntag2xx_page is not None:
                 for char in ntag2xx_page:
                     ntag_string += chr(char)
@@ -115,11 +115,11 @@ def read_nfc_loop():
         except:
             sys.stdout.write('Error reading card\r')
             return 1
-            
+
     set_neopixel_color(0,255,0)
     sys.stdout.write(ntag_string + '\r')
     time.sleep(3)
-    
+
     return 0
             #print('PAGE ',page,': ',[chr(x) for x in ntag2xx_page])
 
@@ -138,14 +138,14 @@ def write_nfc_loop(data):
         # Try again if no card is available.
         if uid is not None:
             break
-    
+
     set_neopixel_color(255,255,0)
-    
+
     sys.stdout.write('Erasing card\r')
     for page in range(20,41):
         content_erase = b'\x00\x00\x00\x00'
         pn532.ntag2xx_write_block(page, content_erase)
-        
+
     sys.stdout.write('Writing card\r')
     for page in range(20,20 + pages):
         content_slice = bytearray(4)
@@ -157,7 +157,7 @@ def write_nfc_loop(data):
             #content_slice.append(content[i + 4 * (page - 20)])
         print(content_slice)
         pn532.ntag2xx_write_block(page, content_slice)
-        
+
     sys.stdout.write('Write done\r')
     set_neopixel_color(0,255,0)