VCTLabs · sarnold · Apr 4, 2026
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
@@ -19,8 +19,8 @@ jobs:
 
   create_release:
     name: Create Release
-    needs: [build_wheels, build_docs]
-    runs-on: ubuntu-22.04
+    needs: [build_wheels]
+    runs-on: ubuntu-24.04
 
     steps:
       - name: Get version

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
@@ -10,15 +10,14 @@ repos:
       - id: check-useless-excludes
       - id: check-hooks-apply
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.4.0
+    rev: v6.0.0
     hooks:
       - id: check-added-large-files
       - id: check-case-conflict
       - id: check-merge-conflict
       - id: check-symlinks
       - id: debug-statements
       - id: requirements-txt-fixer
-      - id: fix-encoding-pragma
       - id: trailing-whitespace
       - id: end-of-file-fixer
       - id: mixed-line-ending
@@ -29,7 +28,7 @@ repos:
         #exclude: '(conda/meta.yaml|.pep8speaks.yml)'
 
   - repo: https://github.com/PyCQA/doc8
-    rev: v1.1.1
+    rev: v2.0.0
     hooks:
       - id: doc8
         args:
@@ -45,25 +44,26 @@ repos:
       - id: rst-inline-touching-normal
 
   - repo: https://github.com/pycqa/isort
-    rev: 5.12.0
+    rev: 8.0.1
     hooks:
       - id: isort
         args: [--settings-path=setup.cfg]
 
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.1.1
+    rev: v1.20.0
     hooks:
     - id: mypy
-      additional_dependencies:
-        - pyusb
       args:
         - --follow-imports=normal
         - --install-types
         - --non-interactive
+        #- --check-untyped-defs
+      additional_dependencies:
+        - "pyusb"
       files: ^cp210x.*\.py$
 
   - repo: https://github.com/myint/autoflake
-    rev: v2.0.2
+    rev: v2.3.3
     hooks:
       - id: autoflake
         files: ^cp210x.*\.py$
@@ -72,28 +72,9 @@ repos:
           - --remove-duplicate-keys
           - --remove-unused-variables
 
-  # use ffffff (black fork) for single quote normalization
-  # (otherwise switch to black for double quotes)
-  - repo: https://github.com/grktsh/ffffff
-    rev: v2020.8.31
+  - repo: https://github.com/ambv/black
+    rev: 26.3.1
     hooks:
-      - id: ffffff
-        name: "Format code (ffffff)"
-        files: ^cp210x.*\.py$
+      - id: black
+        name: "Format code"
         language_version: python3
-
-ci:
-    autofix_commit_msg: |
-        [pre-commit.ci] auto fixes from pre-commit.com hooks
-
-        for more information, see https://pre-commit.ci
-    autofix_prs: false
-    autoupdate_commit_msg: '[pre-commit.ci] pre-commit autoupdate'
-    autoupdate_schedule: weekly
-    skip: []
-    submodules: false
-
-# re-running a pull request: you can trigger a re-run on a pull request by
-#    commenting pre-commit.ci run (must appear on a line by itself).
-# skipping push runs: skip a run by putting [skip ci], [ci skip],
-#    [skip pre-commit.ci], or [pre-commit.ci skip] in the commit message.
diff --git a/README.rst b/README.rst
@@ -66,9 +66,10 @@ Read EEPROM content into hexfile::
 Show EEPROM content from device 002 on bus 001::
 
   $ cp210x-program --read-cp210x -m 001/002
-
-*Hint: The bus and device number can be queried using the `lsusb -t` command, which is available on most linux distributions.*
-
+
+*Hint: The bus and device number can be queried using the ``lsusb -t`` command,
+which is available on most linux distributions.*
+
 
 Write some data to device with vendor id 0x10C4 and product id 0xEA62::
 

diff --git a/cp210x/__init__.py b/cp210x/__init__.py
@@ -1,4 +1,2 @@
-# -*- coding: utf-8 -*-
-
 __license__ = 'GNU LGPL'
 __version__ = '0.4.1'
diff --git a/cp210x/cp210x.py b/cp210x/cp210x.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (c) 2007 Johannes Hölzl <johannes.hoelzl@gmx.de>
 #
 # This library is covered by the GNU LGPL, read LICENSE for details.
@@ -77,7 +76,7 @@ def to_bcd(i):
 
 
 def to_bcd2(i_j_tuple):
-    (i, j) = i_j_tuple
+    i, j = i_j_tuple
     return to_bcd(i) << 8 | to_bcd(j)
 
 
@@ -173,9 +172,7 @@ class Cp210xProgrammer(object):
     TIMEOUT = 300  # ms
 
     @classmethod
-    def list_devices(
-        self, patterns=[{'idVendor': VID_SILABS, 'idProduct': PID_CP210x}]
-    ):
+    def list_devices(self, patterns=[{'idVendor': VID_SILABS, 'idProduct': PID_CP210x}]):
         """Yields a list of devices matching certain patterns.
 
         param patterns: This must be a list of dictionaries. Each device
@@ -227,18 +224,14 @@ def _set_config(self, value, index=0, data=None, request=CP210x_CONFIG):
             CTRL_OUT | CTRL_TYPE_VENDOR, request, value, index, data
         )
         if data is not None and res != len(data):
-            raise Cp210xError(
-                'Short write (%d of %d bytes)' % (res, len(data))
-            )
+            raise Cp210xError('Short write (%d of %d bytes)' % (res, len(data)))
 
     def _set_config_string(self, value, content, max_desc_size):
         assert isinstance(content, str)
         encoded = content.encode('utf-16-le')
         desc_size = len(encoded) + 2
         assert desc_size <= max_desc_size
-        self._set_config(
-            value, data=desc_size.to_bytes(1, 'big') + b'\x03' + encoded
-        )
+        self._set_config(value, data=desc_size.to_bytes(1, 'big') + b'\x03' + encoded)
 
     def _get_config(self, value, length, index=0, request=CP210x_CONFIG):
         print(
@@ -315,9 +308,7 @@ def get_locked(self):
 
     def set_eeprom_content(self, content):
         """Write a 1024-byte blob to the EEPROM"""
-        assert len(content) == SIZE_EEPROM, (
-            'EEPROM data must be %i bytes.' % SIZE_EEPROM
-        )
+        assert len(content) == SIZE_EEPROM, 'EEPROM data must be %i bytes.' % SIZE_EEPROM
         assert isinstance(content, bytes), 'EEPROM data must be bytes.'
         self._set_config(REG_EEPROM, data=content)
 
@@ -339,9 +330,7 @@ def set_product_string(self, product_string):
         For Unicode Plane 0 (BMP; code points 0-FFFF), this specifies
         the maximum length of the string in characters.
         """
-        self._set_config_string(
-            REG_PRODUCT_STRING, product_string, SIZE_PRODUCT_STRING
-        )
+        self._set_config_string(REG_PRODUCT_STRING, product_string, SIZE_PRODUCT_STRING)
 
     def set_serial_number(self, serial_number):
         """Set the serial number string.
@@ -351,9 +340,7 @@ def set_serial_number(self, serial_number):
         For Unicode Plane 0 (BMP; code points 0-FFFF), this specifies
         the maximum length of the string in characters.
         """
-        self._set_config_string(
-            REG_SERIAL_NUMBER, serial_number, SIZE_SERIAL_NUMBER
-        )
+        self._set_config_string(REG_SERIAL_NUMBER, serial_number, SIZE_SERIAL_NUMBER)
 
     def set_max_power(self, max_power):
         """Set maximum power consumption."""

diff --git a/cp210x/eeprom.py b/cp210x/eeprom.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (c) 2007 Johannes Hölzl <johannes.hoelzl@gmx.de>
 #
 # This library is covered by the GNU LGPL, read LICENSE for details.
@@ -51,9 +50,10 @@ def set(self, value):
 def _str_value(position, max_desc_size):
     def get(self):
         desc_size = from_binary(self.get(position, 1))
-        assert (
-            desc_size <= max_desc_size and desc_size >= 2
-        ), 'desc_size: %d, max: %d' % (desc_size, max_desc_size)
+        assert desc_size <= max_desc_size and desc_size >= 2, 'desc_size: %d, max: %d' % (
+            desc_size,
+            max_desc_size,
+        )
         assert self.get(position + 1, 1) == b'\x03', 'Missing 0x03 at %04X' % (
             position + 1
         )
@@ -109,8 +109,7 @@ def parse_hex_file(self, hex_content):
             if tag_type == 0x00:
                 if tag_address != address:
                     raise HexFileError(
-                        'Expected address %04X but found %04X'
-                        % (address, tag_address)
+                        'Expected address %04X but found %04X' % (address, tag_address)
                     )
                 self.content += line
                 address += len(line)
@@ -126,12 +125,7 @@ def build_hex_file(self):
         for tag_start in range(0, len(self.content), 0x10):
             line = self.content[tag_start : tag_start + 0x10]
             address = self.START_ADDRESS + tag_start
-            tag = (
-                to_binary(len(line), 1)
-                + to_binary(address, le=False)
-                + b'\x00'
-                + line
-            )
+            tag = to_binary(len(line), 1) + to_binary(address, le=False) + b'\x00' + line
             cs = checksum(tag)
             if cs == 0:
                 tag += b'\x00'
@@ -170,20 +164,14 @@ def get(self, pos, length):
         return self.content[pos : pos + length]
 
     def set(self, pos, data):
-        self.content = (
-            self.content[:pos] + data + self.content[pos + len(data) :]
-        )
+        self.content = self.content[:pos] + data + self.content[pos + len(data) :]
 
     @property
     def baudrate_table(self):
         dat = self.get(POS_BAUDRATE_TABLE, cp210x.SIZE_BAUDRATE_TABLE)
         return [
-            cp210x.parse_baudrate_cfg(
-                dat[pos : pos + cp210x.SIZE_BAUDRATE_CFG]
-            )
-            for pos in range(
-                0, cp210x.SIZE_BAUDRATE_TABLE, cp210x.SIZE_BAUDRATE_CFG
-            )
+            cp210x.parse_baudrate_cfg(dat[pos : pos + cp210x.SIZE_BAUDRATE_CFG])
+            for pos in range(0, cp210x.SIZE_BAUDRATE_TABLE, cp210x.SIZE_BAUDRATE_CFG)
         ]
 
     @baudrate_table.setter

diff --git a/cp210x/valuefile.py b/cp210x/valuefile.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright (c) 2007 Johannes Hölzl <johannes.hoelzl@gmx.de>
 #
 # This library is covered by the GNU LGPL, read LICENSE for details.
@@ -66,9 +65,7 @@ def write_bool(b):
 def read_bool(s):
     s = s.strip().lower()
     if s not in ['true', 'yes', 'false', 'no']:
-        raise ValueError(
-            "Boolean must be either 'true', 'yes', 'false' or 'no'."
-        )
+        raise ValueError("Boolean must be either 'true', 'yes', 'false' or 'no'.")
     return s in ['true', 'yes']
 
 
@@ -126,15 +123,12 @@ def read_file(fp):
                 baudrate = int(name)
             except ValueError:
                 raise ValuesFileError(
-                    "Key names in 'baudrate table' must be"
-                    ' baudrate numbers.'
+                    "Key names in 'baudrate table' must be" ' baudrate numbers.'
                 )
             try:
                 baudrate_table.append(read_baudrate_info(value) + (baudrate,))
             except ValueError as err:
-                raise ValuesFileError(
-                    'Wrong baudrate info %i: %s' % (baudrate, str(err))
-                )
+                raise ValuesFileError('Wrong baudrate info %i: %s' % (baudrate, str(err)))
         baudrate_table.sort(key=(lambda i: i[3]), reverse=True)
 
         values['baudrate_table'] = baudrate_table
@@ -154,7 +148,7 @@ def write_file(fp, values):
     if 'baudrate_table' in values:
         fp.write('\n')
         fp.write('[baudrate table]\n')
-        for (baudgen, timegen, prescaler, baudrate) in sorted(
+        for baudgen, timegen, prescaler, baudrate in sorted(
             values['baudrate_table'], key=(lambda i: i[3]), reverse=True
         ):
             fp.write(
@@ -210,9 +204,7 @@ def update_values(v, new, dev):
                 baudrate_table = old_baudrate_table
             else:
                 baudrate_table = list(
-                    merge_baudrate_table(
-                        dev.baudrate_table, old_baudrate_table
-                    )
+                    merge_baudrate_table(dev.baudrate_table, old_baudrate_table)
                 )
         else:
             baudrate_table = dev.baudrate_table
@@ -225,7 +217,7 @@ def update_values(v, new, dev):
 
 
 def merge_baudrate_table(old, new):
-    for (old_info, (start, stop)) in zip(old, REQUEST_BAUDRATE_RANGES):
+    for old_info, (start, stop) in zip(old, REQUEST_BAUDRATE_RANGES):
         for baudgen, timer, prescaler, baudrate in new:
             if (start is None or baudrate <= start) and baudrate >= stop:
                 yield (baudgen, timer, prescaler, baudrate)