Add WiFi support, message counts to can_logger example

examples/can_logger.py

@@ -1,27 +1,53 @@
 #!/usr/bin/env python
-
+from __future__ import print_function
 import binascii
 import csv
+import sys
 from panda import Panda
 
 def can_logger():
   
   try:
+    print("Trying to connect to Panda over USB...")
     p = Panda()
-  
+    
+  except AssertionError:
+    print("USB connection failed. Tryining WiFi...")
+    
+    try:
+      p = Panda("WIFI")
+    except:
+      print("WiFi connection timed out. Please make sure your Panda is connected and try again.")
+      sys.exit(0)
+
+  try:
     outputfile = open('output.csv', 'wb')
     csvwriter = csv.writer(outputfile)
     #Write Header
     csvwriter.writerow(['Bus', 'MessageID', 'Message'])
-    print("Writing csv file. Press Ctrl-C to exit...")
-
+    print("Writing csv file output.csv. Press Ctrl-C to exit...\n")
+  
+    bus0_msg_cnt = 0
+    bus1_msg_cnt = 0
+    bus2_msg_cnt = 0
+    
     while True:
       can_recv = p.can_recv()
+
       for address, _, dat, src  in can_recv:
         csvwriter.writerow([str(src), str(address), binascii.hexlify(dat)])
+        
+        if src == 0:
+          bus0_msg_cnt += 1
+        elif src == 1:
+          bus1_msg_cnt += 1
+        elif src == 2:
+          bus2_msg_cnt += 1
+        
+        print("Message Counts... Bus 0: " + str(bus0_msg_cnt) + " Bus 1: " + str(bus1_msg_cnt) + " Bus 2: " + str(bus2_msg_cnt), end='\r')
 
   except KeyboardInterrupt:
-    print("Exiting...")
+    print("\nNow exiting. Final message Counts... Bus 0: " + str(bus0_msg_cnt) + " Bus 1: " + str(bus1_msg_cnt) + " Bus 2: " + str(bus2_msg_cnt))
     outputfile.close()
 
 if __name__ == "__main__":