├── .github ├── ISSUE_TEMPLATE.md └── PULL_REQUEST_TEMPLATE.md ├── .gitignore ├── Adafruit_MCP3008 ├── MCP3008.py └── __init__.py ├── LICENSE ├── README.md ├── examples ├── differential.py └── 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 | setuptools-* 2 | # Byte-compiled / optimized / DLL files 3 | __pycache__/ 4 | *.py[cod] 5 | *$py.class 6 | 7 | # C extensions 8 | *.so 9 | 10 | # Distribution / packaging 11 | .Python 12 | env/ 13 | build/ 14 | develop-eggs/ 15 | dist/ 16 | downloads/ 17 | eggs/ 18 | .eggs/ 19 | lib/ 20 | lib64/ 21 | parts/ 22 | sdist/ 23 | var/ 24 | *.egg-info/ 25 | .installed.cfg 26 | *.egg 27 | 28 | # PyInstaller 29 | # Usually these files are written by a python script from a template 30 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 31 | *.manifest 32 | *.spec 33 | 34 | # Installer logs 35 | pip-log.txt 36 | pip-delete-this-directory.txt 37 | 38 | # Unit test / coverage reports 39 | htmlcov/ 40 | .tox/ 41 | .coverage 42 | .coverage.* 43 | .cache 44 | nosetests.xml 45 | coverage.xml 46 | *,cover 47 | .hypothesis/ 48 | 49 | # Translations 50 | *.mo 51 | *.pot 52 | 53 | # Django stuff: 54 | *.log 55 | 56 | # Sphinx documentation 57 | docs/_build/ 58 | 59 | # PyBuilder 60 | target/ 61 | 62 | #Ipython Notebook 63 | .ipynb_checkpoints 64 | -------------------------------------------------------------------------------- /Adafruit_MCP3008/MCP3008.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 | import Adafruit_GPIO as GPIO 22 | import Adafruit_GPIO.SPI as SPI 23 | 24 | 25 | class MCP3008(object): 26 | """Class to represent an Adafruit MCP3008 analog to digital converter. 27 | """ 28 | 29 | def __init__(self, clk=None, cs=None, miso=None, mosi=None, spi=None, gpio=None): 30 | """Initialize MAX31855 device with software SPI on the specified CLK, 31 | CS, and DO pins. Alternatively can specify hardware SPI by sending an 32 | Adafruit_GPIO.SPI.SpiDev device in the spi parameter. 33 | """ 34 | self._spi = None 35 | # Handle hardware SPI 36 | if spi is not None: 37 | self._spi = spi 38 | elif clk is not None and cs is not None and miso is not None and mosi is not None: 39 | # Default to platform GPIO if not provided. 40 | if gpio is None: 41 | gpio = GPIO.get_platform_gpio() 42 | self._spi = SPI.BitBang(gpio, clk, mosi, miso, cs) 43 | else: 44 | raise ValueError('Must specify either spi for for hardware SPI or clk, cs, miso, and mosi for software SPI!') 45 | self._spi.set_clock_hz(1000000) 46 | self._spi.set_mode(0) 47 | self._spi.set_bit_order(SPI.MSBFIRST) 48 | 49 | def read_adc(self, adc_number): 50 | """Read the current value of the specified ADC channel (0-7). The values 51 | can range from 0 to 1023 (10-bits). 52 | """ 53 | assert 0 <= adc_number <= 7, 'ADC number must be a value of 0-7!' 54 | # Build a single channel read command. 55 | # For example channel zero = 0b11000000 56 | command = 0b11 << 6 # Start bit, single channel read 57 | command |= (adc_number & 0x07) << 3 # Channel number (in 3 bits) 58 | # Note the bottom 3 bits of command are 0, this is to account for the 59 | # extra clock to do the conversion, and the low null bit returned at 60 | # the start of the response. 61 | resp = self._spi.transfer([command, 0x0, 0x0]) 62 | # Parse out the 10 bits of response data and return it. 63 | result = (resp[0] & 0x01) << 9 64 | result |= (resp[1] & 0xFF) << 1 65 | result |= (resp[2] & 0x80) >> 7 66 | return result & 0x3FF 67 | 68 | def read_adc_difference(self, differential): 69 | """Read the difference between two channels. Differential should be a 70 | value of: 71 | - 0: Return channel 0 minus channel 1 72 | - 1: Return channel 1 minus channel 0 73 | - 2: Return channel 2 minus channel 3 74 | - 3: Return channel 3 minus channel 2 75 | - 4: Return channel 4 minus channel 5 76 | - 5: Return channel 5 minus channel 4 77 | - 6: Return channel 6 minus channel 7 78 | - 7: Return channel 7 minus channel 6 79 | """ 80 | assert 0 <= differential <= 7, 'Differential number must be a value of 0-7!' 81 | # Build a difference channel read command. 82 | command = 0b10 << 6 # Start bit, differential read 83 | command |= (differential & 0x07) << 3 # Channel number (in 3 bits) 84 | # Note the bottom 3 bits of command are 0, this is to account for the 85 | # extra clock to do the conversion, and the low null bit returned at 86 | # the start of the response. 87 | resp = self._spi.transfer([command, 0x0, 0x0]) 88 | # Parse out the 10 bits of response data and return it. 89 | result = (resp[0] & 0x01) << 9 90 | result |= (resp[1] & 0xFF) << 1 91 | result |= (resp[2] & 0x80) >> 7 92 | return result & 0x3FF 93 | -------------------------------------------------------------------------------- /Adafruit_MCP3008/__init__.py: -------------------------------------------------------------------------------- 1 | from .MCP3008 import MCP3008 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 LIBRARY: Adafruit Python MCP3008 2 | 3 | This library has been deprecated! We are leaving this up for historical and research purposes but archiving the repository. 4 | 5 | We are now only supporting the use of our CircuitPython libraries for use with Python. 6 | 7 | Please see the CircuitPython MCP3xxx library for using the MCP3008: https://github.com/adafruit/Adafruit_CircuitPython_MCP3xxx/ 8 | 9 | Python code to use the MCP3008 analog to digital converter with a Raspberry Pi or BeagleBone black. 10 | 11 | ## Installation 12 | 13 | To install the library from source (recommended) run the following commands on a Raspberry Pi or other Debian-based OS system: 14 | 15 | sudo apt-get install git build-essential python-dev 16 | cd ~ 17 | git clone https://github.com/adafruit/Adafruit_Python_MCP3008.git 18 | cd Adafruit_Python_MCP3008 19 | sudo python setup.py install 20 | 21 | Alternatively you can install from pip with: 22 | 23 | sudo pip install adafruit-mcp3008 24 | 25 | Note that the pip install method **won't** install the example code. 26 | -------------------------------------------------------------------------------- /examples/differential.py: -------------------------------------------------------------------------------- 1 | # Simple example of reading the MCP3008 analog input channels using its 2 | # differential mode. Will print the difference of channel 0 and 1. 3 | # Author: Tony DiCola 4 | # License: Public Domain 5 | import time 6 | 7 | # Import SPI library (for hardware SPI) and MCP3008 library. 8 | import Adafruit_GPIO.SPI as SPI 9 | import Adafruit_MCP3008 10 | 11 | 12 | # Software SPI configuration: 13 | # CLK = 18 14 | # MISO = 23 15 | # MOSI = 24 16 | # CS = 25 17 | # mcp = Adafruit_MCP3008.MCP3008(clk=CLK, cs=CS, miso=MISO, mosi=MOSI) 18 | 19 | # Hardware SPI configuration: 20 | SPI_PORT = 0 21 | SPI_DEVICE = 0 22 | mcp = Adafruit_MCP3008.MCP3008(spi=SPI.SpiDev(SPI_PORT, SPI_DEVICE)) 23 | 24 | print('Press Ctrl-C to quit...') 25 | while True: 26 | # Grab the difference between channel 0 and 1 (i.e. channel 0 minus 1). 27 | # Note you can specify any value in 0-7 to grab other differences: 28 | # - 0: Return channel 0 minus channel 1 29 | # - 1: Return channel 1 minus channel 0 30 | # - 2: Return channel 2 minus channel 3 31 | # - 3: Return channel 3 minus channel 2 32 | # - 4: Return channel 4 minus channel 5 33 | # - 5: Return channel 5 minus channel 4 34 | # - 6: Return channel 6 minus channel 7 35 | # - 7: Return channel 7 minus channel 6 36 | value = mcp.read_adc_difference(0) 37 | print('Channel 0 minus 1: {0}'.format(value)) 38 | time.sleep(0.5) 39 | -------------------------------------------------------------------------------- /examples/simpletest.py: -------------------------------------------------------------------------------- 1 | # Simple example of reading the MCP3008 analog input channels and printing 2 | # them all out. 3 | # Author: Tony DiCola 4 | # License: Public Domain 5 | import time 6 | 7 | # Import SPI library (for hardware SPI) and MCP3008 library. 8 | import Adafruit_GPIO.SPI as SPI 9 | import Adafruit_MCP3008 10 | 11 | 12 | # Software SPI configuration: 13 | CLK = 18 14 | MISO = 23 15 | MOSI = 24 16 | CS = 25 17 | mcp = Adafruit_MCP3008.MCP3008(clk=CLK, cs=CS, miso=MISO, mosi=MOSI) 18 | 19 | # Hardware SPI configuration: 20 | # SPI_PORT = 0 21 | # SPI_DEVICE = 0 22 | # mcp = Adafruit_MCP3008.MCP3008(spi=SPI.SpiDev(SPI_PORT, SPI_DEVICE)) 23 | 24 | 25 | print('Reading MCP3008 values, press Ctrl-C to quit...') 26 | # Print nice channel column headers. 27 | print('| {0:>4} | {1:>4} | {2:>4} | {3:>4} | {4:>4} | {5:>4} | {6:>4} | {7:>4} |'.format(*range(8))) 28 | print('-' * 57) 29 | # Main program loop. 30 | while True: 31 | # Read all the ADC channel values in a list. 32 | values = [0]*8 33 | for i in range(8): 34 | # The read_adc function will get the value of the specified channel (0-7). 35 | values[i] = mcp.read_adc(i) 36 | # Print the ADC values. 37 | print('| {0:>4} | {1:>4} | {2:>4} | {3:>4} | {4:>4} | {5:>4} | {6:>4} | {7:>4} |'.format(*values)) 38 | # Pause for half a second. 39 | time.sleep(0.5) 40 | -------------------------------------------------------------------------------- /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_MCP3008', 21 | version = '1.0.2', 22 | author = 'Tony DiCola', 23 | author_email = 'tdicola@adafruit.com', 24 | description = 'Python code to use the MCP3008 analog to digital converter with a Raspberry Pi or BeagleBone black.', 25 | license = 'MIT', 26 | classifiers = classifiers, 27 | url = 'https://github.com/adafruit/Adafruit_Python_MCP3008/', 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 | --------------------------------------------------------------------------------