[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

hart_protocol/__version__.py

@@ -4,7 +4,6 @@
 import subprocess
 from .VERSION import __version__
 
-
 here = pathlib.Path(__file__).resolve().parent
 
 

hart_protocol/_unpacker.py

@@ -61,7 +61,7 @@ def __next__(self):
         while len(self.buf) < 3:
             self.buf += self._read_one_byte_if_possible()
         # keep reading until we find a minimum preamble
-        while self.buf[:3] not in [b"\xFF\xFF\x06", b"\xFF\xFF\x86"]:
+        while self.buf[:3] not in [b"\xff\xff\x06", b"\xff\xff\x86"]:
             self.buf += self._read_one_byte_if_possible()
             self.buf = self.buf[1:]
             self._decoding_error("Head of buffer not recognized as valid preamble")

hart_protocol/tools.py

@@ -24,7 +24,7 @@ def pack_command(address, command_id, data=None):
         address = int.from_bytes(address, "big")
     if type(command_id) == int:
         command_id = command_id.to_bytes(1, "big")
-    command = b"\xFF\xFF\xFF\xFF\xFF"  # preamble
+    command = b"\xff\xff\xff\xff\xff"  # preamble
     command += b"\x82"  # start charachter
     command += (549755813888 | address).to_bytes(5, "big")
     command += command_id