├── .github ├── ISSUE_TEMPLATE.md └── PULL_REQUEST_TEMPLATE.md ├── .gitignore ├── Adafruit_PCA9685 ├── PCA9685.py └── __init__.py ├── LICENSE ├── README.md ├── examples └── simpletest.py ├── ez_setup.py └── setup.py /.github/ISSUE_TEMPLATE.md: -------------------------------------------------------------------------------- 1 | Thank you for opening an issue on an Adafruit Python library repository. To 2 | improve the speed of resolution please review the following guidelines and 3 | common troubleshooting steps below before creating the issue: 4 | 5 | - **Do not use GitHub issues for troubleshooting projects and issues.** Instead use 6 | the forums at http://forums.adafruit.com to ask questions and troubleshoot why 7 | something isn't working as expected. In many cases the problem is a common issue 8 | that you will more quickly receive help from the forum community. GitHub issues 9 | are meant for known defects in the code. If you don't know if there is a defect 10 | in the code then start with troubleshooting on the forum first. 11 | 12 | - **If following a tutorial or guide be sure you didn't miss a step.** Carefully 13 | check all of the steps and commands to run have been followed. Consult the 14 | forum if you're unsure or have questions about steps in a guide/tutorial. 15 | 16 | - **For Python/Raspberry Pi projects check these very common issues to ensure they don't apply**: 17 | 18 | - If you are receiving an **ImportError: No module named...** error then a 19 | library the code depends on is not installed. Check the tutorial/guide or 20 | README to ensure you have installed the necessary libraries. Usually the 21 | missing library can be installed with the `pip` tool, but check the tutorial/guide 22 | for the exact command. 23 | 24 | - **Be sure you are supplying adequate power to the board.** Check the specs of 25 | your board and power in an external power supply. In many cases just 26 | plugging a board into your computer is not enough to power it and other 27 | peripherals. 28 | 29 | - **Double check all soldering joints and connections.** Flakey connections 30 | cause many mysterious problems. See the [guide to excellent soldering](https://learn.adafruit.com/adafruit-guide-excellent-soldering/tools) for examples of good solder joints. 31 | 32 | If you're sure this issue is a defect in the code and checked the steps above 33 | please fill in the following fields to provide enough troubleshooting information. 34 | You may delete the guideline and text above to just leave the following details: 35 | 36 | - Platform/operating system (i.e. Raspberry Pi with Raspbian operating system, 37 | Windows 32-bit, Windows 64-bit, Mac OSX 64-bit, etc.): **INSERT PLATFORM/OPERATING 38 | SYSTEM HERE** 39 | 40 | - Python version (run `python -version` or `python3 -version`): **INSERT PYTHON 41 | VERSION HERE** 42 | 43 | - Error message you are receiving, including any Python exception traces: **INSERT 44 | ERROR MESAGE/EXCEPTION TRACES HERE*** 45 | 46 | - List the steps to reproduce the problem below (if possible attach code or commands 47 | to run): **LIST REPRO STEPS BELOW** 48 | -------------------------------------------------------------------------------- /.github/PULL_REQUEST_TEMPLATE.md: -------------------------------------------------------------------------------- 1 | Thank you for creating a pull request to contribute to Adafruit's GitHub code! 2 | Before you open the request please review the following guidelines and tips to 3 | help it be more easily integrated: 4 | 5 | - **Describe the scope of your change--i.e. what the change does and what parts 6 | of the code were modified.** This will help us understand any risks of integrating 7 | the code. 8 | 9 | - **Describe any known limitations with your change.** For example if the change 10 | doesn't apply to a supported platform of the library please mention it. 11 | 12 | - **Please run any tests or examples that can exercise your modified code.** We 13 | strive to not break users of the code and running tests/examples helps with this 14 | process. 15 | 16 | Thank you again for contributing! We will try to test and integrate the change 17 | as soon as we can, but be aware we have many GitHub repositories to manage and 18 | can't immediately respond to every request. There is no need to bump or check in 19 | on a pull request (it will clutter the discussion of the request). 20 | 21 | Also don't be worried if the request is closed or not integrated--sometimes the 22 | priorities of Adafruit's GitHub code (education, ease of use) might not match the 23 | priorities of the pull request. Don't fret, the open source community thrives on 24 | forks and GitHub makes it easy to keep your changes in a forked repo. 25 | 26 | After reviewing the guidelines above you can delete this text from the pull request. 27 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Byte-compiled / optimized / DLL files 2 | __pycache__/ 3 | *.py[cod] 4 | *$py.class 5 | 6 | # C extensions 7 | *.so 8 | 9 | # Distribution / packaging 10 | .Python 11 | env/ 12 | build/ 13 | develop-eggs/ 14 | dist/ 15 | downloads/ 16 | eggs/ 17 | .eggs/ 18 | lib/ 19 | lib64/ 20 | parts/ 21 | sdist/ 22 | var/ 23 | *.egg-info/ 24 | .installed.cfg 25 | *.egg 26 | 27 | # PyInstaller 28 | # Usually these files are written by a python script from a template 29 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 30 | *.manifest 31 | *.spec 32 | 33 | # Installer logs 34 | pip-log.txt 35 | pip-delete-this-directory.txt 36 | 37 | # Unit test / coverage reports 38 | htmlcov/ 39 | .tox/ 40 | .coverage 41 | .coverage.* 42 | .cache 43 | nosetests.xml 44 | coverage.xml 45 | *,cover 46 | .hypothesis/ 47 | 48 | # Translations 49 | *.mo 50 | *.pot 51 | 52 | # Django stuff: 53 | *.log 54 | 55 | # Sphinx documentation 56 | docs/_build/ 57 | 58 | # PyBuilder 59 | target/ 60 | 61 | #Ipython Notebook 62 | .ipynb_checkpoints 63 | -------------------------------------------------------------------------------- /Adafruit_PCA9685/PCA9685.py: -------------------------------------------------------------------------------- 1 | # Copyright (c) 2016 Adafruit Industries 2 | # Author: Tony DiCola 3 | # 4 | # Permission is hereby granted, free of charge, to any person obtaining a copy 5 | # of this software and associated documentation files (the "Software"), to deal 6 | # in the Software without restriction, including without limitation the rights 7 | # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 8 | # copies of the Software, and to permit persons to whom the Software is 9 | # furnished to do so, subject to the following conditions: 10 | # 11 | # The above copyright notice and this permission notice shall be included in 12 | # all copies or substantial portions of the Software. 13 | # 14 | # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 | # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 | # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 | # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 | # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 | # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 20 | # THE SOFTWARE. 21 | from __future__ import division 22 | import logging 23 | import time 24 | import math 25 | 26 | 27 | # Registers/etc: 28 | PCA9685_ADDRESS = 0x40 29 | MODE1 = 0x00 30 | MODE2 = 0x01 31 | SUBADR1 = 0x02 32 | SUBADR2 = 0x03 33 | SUBADR3 = 0x04 34 | PRESCALE = 0xFE 35 | LED0_ON_L = 0x06 36 | LED0_ON_H = 0x07 37 | LED0_OFF_L = 0x08 38 | LED0_OFF_H = 0x09 39 | ALL_LED_ON_L = 0xFA 40 | ALL_LED_ON_H = 0xFB 41 | ALL_LED_OFF_L = 0xFC 42 | ALL_LED_OFF_H = 0xFD 43 | 44 | # Bits: 45 | RESTART = 0x80 46 | SLEEP = 0x10 47 | ALLCALL = 0x01 48 | INVRT = 0x10 49 | OUTDRV = 0x04 50 | 51 | 52 | logger = logging.getLogger(__name__) 53 | 54 | 55 | def software_reset(i2c=None, **kwargs): 56 | """Sends a software reset (SWRST) command to all servo drivers on the bus.""" 57 | # Setup I2C interface for device 0x00 to talk to all of them. 58 | if i2c is None: 59 | import Adafruit_GPIO.I2C as I2C 60 | i2c = I2C 61 | self._device = i2c.get_i2c_device(0x00, **kwargs) 62 | self._device.writeRaw8(0x06) # SWRST 63 | 64 | 65 | class PCA9685(object): 66 | """PCA9685 PWM LED/servo controller.""" 67 | 68 | def __init__(self, address=PCA9685_ADDRESS, i2c=None, **kwargs): 69 | """Initialize the PCA9685.""" 70 | # Setup I2C interface for the device. 71 | if i2c is None: 72 | import Adafruit_GPIO.I2C as I2C 73 | i2c = I2C 74 | self._device = i2c.get_i2c_device(address, **kwargs) 75 | self.set_all_pwm(0, 0) 76 | self._device.write8(MODE2, OUTDRV) 77 | self._device.write8(MODE1, ALLCALL) 78 | time.sleep(0.005) # wait for oscillator 79 | mode1 = self._device.readU8(MODE1) 80 | mode1 = mode1 & ~SLEEP # wake up (reset sleep) 81 | self._device.write8(MODE1, mode1) 82 | time.sleep(0.005) # wait for oscillator 83 | 84 | def set_pwm_freq(self, freq_hz): 85 | """Set the PWM frequency to the provided value in hertz.""" 86 | prescaleval = 25000000.0 # 25MHz 87 | prescaleval /= 4096.0 # 12-bit 88 | prescaleval /= float(freq_hz) 89 | prescaleval -= 1.0 90 | logger.debug('Setting PWM frequency to {0} Hz'.format(freq_hz)) 91 | logger.debug('Estimated pre-scale: {0}'.format(prescaleval)) 92 | prescale = int(math.floor(prescaleval + 0.5)) 93 | logger.debug('Final pre-scale: {0}'.format(prescale)) 94 | oldmode = self._device.readU8(MODE1); 95 | newmode = (oldmode & 0x7F) | 0x10 # sleep 96 | self._device.write8(MODE1, newmode) # go to sleep 97 | self._device.write8(PRESCALE, prescale) 98 | self._device.write8(MODE1, oldmode) 99 | time.sleep(0.005) 100 | self._device.write8(MODE1, oldmode | 0x80) 101 | 102 | def set_pwm(self, channel, on, off): 103 | """Sets a single PWM channel.""" 104 | self._device.write8(LED0_ON_L+4*channel, on & 0xFF) 105 | self._device.write8(LED0_ON_H+4*channel, on >> 8) 106 | self._device.write8(LED0_OFF_L+4*channel, off & 0xFF) 107 | self._device.write8(LED0_OFF_H+4*channel, off >> 8) 108 | 109 | def set_all_pwm(self, on, off): 110 | """Sets all PWM channels.""" 111 | self._device.write8(ALL_LED_ON_L, on & 0xFF) 112 | self._device.write8(ALL_LED_ON_H, on >> 8) 113 | self._device.write8(ALL_LED_OFF_L, off & 0xFF) 114 | self._device.write8(ALL_LED_OFF_H, off >> 8) 115 | -------------------------------------------------------------------------------- /Adafruit_PCA9685/__init__.py: -------------------------------------------------------------------------------- 1 | from .PCA9685 import PCA9685, software_reset 2 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | The MIT License (MIT) 2 | 3 | Copyright (c) 2016 Adafruit Industries 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | !! DEPRECATED !! 2 | ================ 3 | 4 | This library is deprecated and has been archived. Please use the new library here: 5 | https://github.com/adafruit/Adafruit_CircuitPython_PCA9685 6 | 7 | # Adafruit Python PCA9685 8 | Python code to use the PCA9685 PWM servo/LED controller with a Raspberry Pi or BeagleBone black. 9 | 10 | ## Installation 11 | 12 | To install the library from source (recommended) run the following commands on a Raspberry Pi or other Debian-based OS system: 13 | 14 | sudo apt-get install git build-essential python-dev 15 | cd ~ 16 | git clone https://github.com/adafruit/Adafruit_Python_PCA9685.git 17 | cd Adafruit_Python_PCA9685 18 | sudo python setup.py install 19 | 20 | Alternatively you can install from pip with: 21 | 22 | sudo pip install adafruit-pca9685 23 | 24 | Note that the pip install method **won't** install the example code. 25 | -------------------------------------------------------------------------------- /examples/simpletest.py: -------------------------------------------------------------------------------- 1 | # Simple demo of of the PCA9685 PWM servo/LED controller library. 2 | # This will move channel 0 from min to max position repeatedly. 3 | # Author: Tony DiCola 4 | # License: Public Domain 5 | from __future__ import division 6 | import time 7 | 8 | # Import the PCA9685 module. 9 | import Adafruit_PCA9685 10 | 11 | 12 | # Uncomment to enable debug output. 13 | #import logging 14 | #logging.basicConfig(level=logging.DEBUG) 15 | 16 | # Initialise the PCA9685 using the default address (0x40). 17 | pwm = Adafruit_PCA9685.PCA9685() 18 | 19 | # Alternatively specify a different address and/or bus: 20 | #pwm = Adafruit_PCA9685.PCA9685(address=0x41, busnum=2) 21 | 22 | # Configure min and max servo pulse lengths 23 | servo_min = 150 # Min pulse length out of 4096 24 | servo_max = 600 # Max pulse length out of 4096 25 | 26 | # Helper function to make setting a servo pulse width simpler. 27 | def set_servo_pulse(channel, pulse): 28 | pulse_length = 1000000 # 1,000,000 us per second 29 | pulse_length //= 60 # 60 Hz 30 | print('{0}us per period'.format(pulse_length)) 31 | pulse_length //= 4096 # 12 bits of resolution 32 | print('{0}us per bit'.format(pulse_length)) 33 | pulse *= 1000 34 | pulse //= pulse_length 35 | pwm.set_pwm(channel, 0, pulse) 36 | 37 | # Set frequency to 60hz, good for servos. 38 | pwm.set_pwm_freq(60) 39 | 40 | print('Moving servo on channel 0, press Ctrl-C to quit...') 41 | while True: 42 | # Move servo on channel O between extremes. 43 | pwm.set_pwm(0, 0, servo_min) 44 | time.sleep(1) 45 | pwm.set_pwm(0, 0, servo_max) 46 | time.sleep(1) 47 | -------------------------------------------------------------------------------- /ez_setup.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | """Bootstrap setuptools installation 3 | 4 | To use setuptools in your package's setup.py, include this 5 | file in the same directory and add this to the top of your setup.py:: 6 | 7 | from ez_setup import use_setuptools 8 | use_setuptools() 9 | 10 | To require a specific version of setuptools, set a download 11 | mirror, or use an alternate download directory, simply supply 12 | the appropriate options to ``use_setuptools()``. 13 | 14 | This file can also be run as a script to install or upgrade setuptools. 15 | """ 16 | import os 17 | import shutil 18 | import sys 19 | import tempfile 20 | import zipfile 21 | import optparse 22 | import subprocess 23 | import platform 24 | import textwrap 25 | import contextlib 26 | 27 | from distutils import log 28 | 29 | try: 30 | from site import USER_SITE 31 | except ImportError: 32 | USER_SITE = None 33 | 34 | DEFAULT_VERSION = "3.5.1" 35 | DEFAULT_URL = "https://pypi.python.org/packages/source/s/setuptools/" 36 | 37 | def _python_cmd(*args): 38 | """ 39 | Return True if the command succeeded. 40 | """ 41 | args = (sys.executable,) + args 42 | return subprocess.call(args) == 0 43 | 44 | 45 | def _install(archive_filename, install_args=()): 46 | with archive_context(archive_filename): 47 | # installing 48 | log.warn('Installing Setuptools') 49 | if not _python_cmd('setup.py', 'install', *install_args): 50 | log.warn('Something went wrong during the installation.') 51 | log.warn('See the error message above.') 52 | # exitcode will be 2 53 | return 2 54 | 55 | 56 | def _build_egg(egg, archive_filename, to_dir): 57 | with archive_context(archive_filename): 58 | # building an egg 59 | log.warn('Building a Setuptools egg in %s', to_dir) 60 | _python_cmd('setup.py', '-q', 'bdist_egg', '--dist-dir', to_dir) 61 | # returning the result 62 | log.warn(egg) 63 | if not os.path.exists(egg): 64 | raise IOError('Could not build the egg.') 65 | 66 | 67 | def get_zip_class(): 68 | """ 69 | Supplement ZipFile class to support context manager for Python 2.6 70 | """ 71 | class ContextualZipFile(zipfile.ZipFile): 72 | def __enter__(self): 73 | return self 74 | def __exit__(self, type, value, traceback): 75 | self.close 76 | return zipfile.ZipFile if hasattr(zipfile.ZipFile, '__exit__') else \ 77 | ContextualZipFile 78 | 79 | 80 | @contextlib.contextmanager 81 | def archive_context(filename): 82 | # extracting the archive 83 | tmpdir = tempfile.mkdtemp() 84 | log.warn('Extracting in %s', tmpdir) 85 | old_wd = os.getcwd() 86 | try: 87 | os.chdir(tmpdir) 88 | with get_zip_class()(filename) as archive: 89 | archive.extractall() 90 | 91 | # going in the directory 92 | subdir = os.path.join(tmpdir, os.listdir(tmpdir)[0]) 93 | os.chdir(subdir) 94 | log.warn('Now working in %s', subdir) 95 | yield 96 | 97 | finally: 98 | os.chdir(old_wd) 99 | shutil.rmtree(tmpdir) 100 | 101 | 102 | def _do_download(version, download_base, to_dir, download_delay): 103 | egg = os.path.join(to_dir, 'setuptools-%s-py%d.%d.egg' 104 | % (version, sys.version_info[0], sys.version_info[1])) 105 | if not os.path.exists(egg): 106 | archive = download_setuptools(version, download_base, 107 | to_dir, download_delay) 108 | _build_egg(egg, archive, to_dir) 109 | sys.path.insert(0, egg) 110 | 111 | # Remove previously-imported pkg_resources if present (see 112 | # https://bitbucket.org/pypa/setuptools/pull-request/7/ for details). 113 | if 'pkg_resources' in sys.modules: 114 | del sys.modules['pkg_resources'] 115 | 116 | import setuptools 117 | setuptools.bootstrap_install_from = egg 118 | 119 | 120 | def use_setuptools(version=DEFAULT_VERSION, download_base=DEFAULT_URL, 121 | to_dir=os.curdir, download_delay=15): 122 | to_dir = os.path.abspath(to_dir) 123 | rep_modules = 'pkg_resources', 'setuptools' 124 | imported = set(sys.modules).intersection(rep_modules) 125 | try: 126 | import pkg_resources 127 | except ImportError: 128 | return _do_download(version, download_base, to_dir, download_delay) 129 | try: 130 | pkg_resources.require("setuptools>=" + version) 131 | return 132 | except pkg_resources.DistributionNotFound: 133 | return _do_download(version, download_base, to_dir, download_delay) 134 | except pkg_resources.VersionConflict as VC_err: 135 | if imported: 136 | msg = textwrap.dedent(""" 137 | The required version of setuptools (>={version}) is not available, 138 | and can't be installed while this script is running. Please 139 | install a more recent version first, using 140 | 'easy_install -U setuptools'. 141 | 142 | (Currently using {VC_err.args[0]!r}) 143 | """).format(VC_err=VC_err, version=version) 144 | sys.stderr.write(msg) 145 | sys.exit(2) 146 | 147 | # otherwise, reload ok 148 | del pkg_resources, sys.modules['pkg_resources'] 149 | return _do_download(version, download_base, to_dir, download_delay) 150 | 151 | def _clean_check(cmd, target): 152 | """ 153 | Run the command to download target. If the command fails, clean up before 154 | re-raising the error. 155 | """ 156 | try: 157 | subprocess.check_call(cmd) 158 | except subprocess.CalledProcessError: 159 | if os.access(target, os.F_OK): 160 | os.unlink(target) 161 | raise 162 | 163 | def download_file_powershell(url, target): 164 | """ 165 | Download the file at url to target using Powershell (which will validate 166 | trust). Raise an exception if the command cannot complete. 167 | """ 168 | target = os.path.abspath(target) 169 | cmd = [ 170 | 'powershell', 171 | '-Command', 172 | "(new-object System.Net.WebClient).DownloadFile(%(url)r, %(target)r)" % vars(), 173 | ] 174 | _clean_check(cmd, target) 175 | 176 | def has_powershell(): 177 | if platform.system() != 'Windows': 178 | return False 179 | cmd = ['powershell', '-Command', 'echo test'] 180 | devnull = open(os.path.devnull, 'wb') 181 | try: 182 | try: 183 | subprocess.check_call(cmd, stdout=devnull, stderr=devnull) 184 | except Exception: 185 | return False 186 | finally: 187 | devnull.close() 188 | return True 189 | 190 | download_file_powershell.viable = has_powershell 191 | 192 | def download_file_curl(url, target): 193 | cmd = ['curl', url, '--silent', '--output', target] 194 | _clean_check(cmd, target) 195 | 196 | def has_curl(): 197 | cmd = ['curl', '--version'] 198 | devnull = open(os.path.devnull, 'wb') 199 | try: 200 | try: 201 | subprocess.check_call(cmd, stdout=devnull, stderr=devnull) 202 | except Exception: 203 | return False 204 | finally: 205 | devnull.close() 206 | return True 207 | 208 | download_file_curl.viable = has_curl 209 | 210 | def download_file_wget(url, target): 211 | cmd = ['wget', url, '--quiet', '--output-document', target] 212 | _clean_check(cmd, target) 213 | 214 | def has_wget(): 215 | cmd = ['wget', '--version'] 216 | devnull = open(os.path.devnull, 'wb') 217 | try: 218 | try: 219 | subprocess.check_call(cmd, stdout=devnull, stderr=devnull) 220 | except Exception: 221 | return False 222 | finally: 223 | devnull.close() 224 | return True 225 | 226 | download_file_wget.viable = has_wget 227 | 228 | def download_file_insecure(url, target): 229 | """ 230 | Use Python to download the file, even though it cannot authenticate the 231 | connection. 232 | """ 233 | try: 234 | from urllib.request import urlopen 235 | except ImportError: 236 | from urllib2 import urlopen 237 | src = dst = None 238 | try: 239 | src = urlopen(url) 240 | # Read/write all in one block, so we don't create a corrupt file 241 | # if the download is interrupted. 242 | data = src.read() 243 | dst = open(target, "wb") 244 | dst.write(data) 245 | finally: 246 | if src: 247 | src.close() 248 | if dst: 249 | dst.close() 250 | 251 | download_file_insecure.viable = lambda: True 252 | 253 | def get_best_downloader(): 254 | downloaders = [ 255 | download_file_powershell, 256 | download_file_curl, 257 | download_file_wget, 258 | download_file_insecure, 259 | ] 260 | 261 | for dl in downloaders: 262 | if dl.viable(): 263 | return dl 264 | 265 | def download_setuptools(version=DEFAULT_VERSION, download_base=DEFAULT_URL, 266 | to_dir=os.curdir, delay=15, downloader_factory=get_best_downloader): 267 | """ 268 | Download setuptools from a specified location and return its filename 269 | 270 | `version` should be a valid setuptools version number that is available 271 | as an egg for download under the `download_base` URL (which should end 272 | with a '/'). `to_dir` is the directory where the egg will be downloaded. 273 | `delay` is the number of seconds to pause before an actual download 274 | attempt. 275 | 276 | ``downloader_factory`` should be a function taking no arguments and 277 | returning a function for downloading a URL to a target. 278 | """ 279 | # making sure we use the absolute path 280 | to_dir = os.path.abspath(to_dir) 281 | zip_name = "setuptools-%s.zip" % version 282 | url = download_base + zip_name 283 | saveto = os.path.join(to_dir, zip_name) 284 | if not os.path.exists(saveto): # Avoid repeated downloads 285 | log.warn("Downloading %s", url) 286 | downloader = downloader_factory() 287 | downloader(url, saveto) 288 | return os.path.realpath(saveto) 289 | 290 | def _build_install_args(options): 291 | """ 292 | Build the arguments to 'python setup.py install' on the setuptools package 293 | """ 294 | return ['--user'] if options.user_install else [] 295 | 296 | def _parse_args(): 297 | """ 298 | Parse the command line for options 299 | """ 300 | parser = optparse.OptionParser() 301 | parser.add_option( 302 | '--user', dest='user_install', action='store_true', default=False, 303 | help='install in user site package (requires Python 2.6 or later)') 304 | parser.add_option( 305 | '--download-base', dest='download_base', metavar="URL", 306 | default=DEFAULT_URL, 307 | help='alternative URL from where to download the setuptools package') 308 | parser.add_option( 309 | '--insecure', dest='downloader_factory', action='store_const', 310 | const=lambda: download_file_insecure, default=get_best_downloader, 311 | help='Use internal, non-validating downloader' 312 | ) 313 | parser.add_option( 314 | '--version', help="Specify which version to download", 315 | default=DEFAULT_VERSION, 316 | ) 317 | options, args = parser.parse_args() 318 | # positional arguments are ignored 319 | return options 320 | 321 | def main(): 322 | """Install or upgrade setuptools and EasyInstall""" 323 | options = _parse_args() 324 | archive = download_setuptools( 325 | version=options.version, 326 | download_base=options.download_base, 327 | downloader_factory=options.downloader_factory, 328 | ) 329 | return _install(archive, _build_install_args(options)) 330 | 331 | if __name__ == '__main__': 332 | sys.exit(main()) 333 | -------------------------------------------------------------------------------- /setup.py: -------------------------------------------------------------------------------- 1 | try: 2 | # Try using ez_setup to install setuptools if not already installed. 3 | from ez_setup import use_setuptools 4 | use_setuptools() 5 | except ImportError: 6 | # Ignore import error and assume Python 3 which already has setuptools. 7 | pass 8 | 9 | from setuptools import setup, find_packages 10 | 11 | classifiers = ['Development Status :: 4 - Beta', 12 | 'Operating System :: POSIX :: Linux', 13 | 'License :: OSI Approved :: MIT License', 14 | 'Intended Audience :: Developers', 15 | 'Programming Language :: Python :: 2.7', 16 | 'Programming Language :: Python :: 3', 17 | 'Topic :: Software Development', 18 | 'Topic :: System :: Hardware'] 19 | 20 | setup(name = 'Adafruit_PCA9685', 21 | version = '1.0.1', 22 | author = 'Tony DiCola', 23 | author_email = 'tdicola@adafruit.com', 24 | description = 'Python code to use the PCA9685 PWM servo/LED controller with a Raspberry Pi or BeagleBone Black.', 25 | license = 'MIT', 26 | classifiers = classifiers, 27 | url = 'https://github.com/adafruit/Adafruit_Python_PCA9685/', 28 | dependency_links = ['https://github.com/adafruit/Adafruit_Python_GPIO/tarball/master#egg=Adafruit-GPIO-0.6.5'], 29 | install_requires = ['Adafruit-GPIO>=0.6.5'], 30 | packages = find_packages()) 31 | --------------------------------------------------------------------------------