protocol: 0xc7 on the spark seems to be in big-endian

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

test/test_messages.py

@@ -282,7 +282,7 @@ class TestProtocolAny(unittest.TestCase):
                 self.assertEqual(request.opcode, 0xc5)
                 self.assertEqual(request.length, 1)
                 self.assertEqual(request[0], 0x00)
-                data = list(count.to_bytes(4, byteorder='little'))
+                data = list(count.to_bytes(4, byteorder='big'))
                 return NordicData([0xc7, len(data)] + data)
             else:
                 t = time.strftime('%y%m%d%H%M%S', time.gmtime(ts))

tuhi/protocol.py

@@ -878,7 +878,7 @@ class MsgGetStrokesSpark(Msg):
         # This is an odd message, we have one request but one or two
         # replies. The 0xc7 reply is sometimes missing, unclear though when.
         if reply.opcode == 0xc7:
-            self.count = int.from_bytes(reply[0:4], byteorder='little')
+            self.count = int.from_bytes(reply[0:4], byteorder='big')
 
             # Re-execute the message but this time without a new request
             self.requires_request = False