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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"issue when using with smbus","articleBody":"I am not sure if this is an issue, i am very new to classes and as such i apologies if this is a really simple question.\r\n\r\nI am trying to read values from the SMbus python module, when i run it inside the class i get a bad descriptor error. If i run it outside the class it works fine, but i need to be able to call it withing the main program...\r\n\r\n\r\nThis is the error:\r\n  File \"powertracker.py\", line 100, in \u003cmodule\u003e\r\n    daemon_runner.do_action()\r\n  File \"/usr/lib/pymodules/python2.7/daemon/runner.py\", line 186, in do_action\r\n    func(self)\r\n  File \"/usr/lib/pymodules/python2.7/daemon/runner.py\", line 131, in _start\r\n    self.app.run()\r\n  File \"powertracker.py\", line 80, in run\r\n    amps = selfed.read_ain()\r\n  File \"powertracker.py\", line 61, in read_ain\r\n    bus.write_byte(0x48, 0)\r\n  File \"/usr/local/lib/python2.7/dist-packages/smbus_cffi-0.5.1-py2.7-linux-armv\r\n    return fn(*args, **kwdefaults)\r\n  File \"/usr/local/lib/python2.7/dist-packages/smbus_cffi-0.5.1-py2.7-linux-armv\r\n    self._set_addr(addr)\r\n  File \"/usr/local/lib/python2.7/dist-packages/smbus_cffi-0.5.1-py2.7-linux-armv\r\n    ioctl(self._fd, SMBUS.I2C_SLAVE, addr)\r\nIOError: [Errno 9] Bad file descriptor","author":{"url":"https://github.com/fl1ck3r","@type":"Person","name":"fl1ck3r"},"datePublished":"2016-12-09T14:49:14.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/7/python-daemon/issues/7"}