Errno 5 Input/output Error Python
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Python Ioerror Errno 5 Input/output Error
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Ioerror Errno 5 Input/output Error Raspberry Pi
Sign up 'IOError: [Errno 5] Input/output error' while using SMBus for analog reading through RPi up vote 1 down vote favorite I have been looking for the answer for the error mentioned in the title but for the first time i haavent got an answer yet. We ll im trying to make my Raspberry pi read analog data but when i run the
Oserror Errno 5 Input/output Error Python
code in terminal window it gives me 'IOError: [Errno 5] Input/output error'. The code im using to read analog data is shown below. Im using PCF8591 ADC converter. from smbus import SMBus bus = SMBus(0) print "read a/d press ctrl + c to stop" bus.write_byte(0x48, 0) lastval = -1 while True: reada = bus.read_byte(0x48) if(abs(lastval-reada) > 2): print(reada) lastval=reada I understand it might be because of the version changed in raspberry pi and i should change SMBus(0) to SMBus(1). For this i checked my RPi version which is not the revised one. But still I tried to run the program by changing the SMBus number, still no luck with it. The error I get is shown below: Traceback (most recent call last): File "analogread.py", line 7, in
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Ioerror: [errno 5] Input/output Error Odoo
Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. ioerror: [errno 5] input/output error adafruit Join them; it only takes a minute: Sign up IOError Input/Output Error When Printing up vote 13 down vote favorite 1 I have inherited some code which is periodically (randomly) failing due to an Input/Output error being raised during http://stackoverflow.com/questions/30325351/ioerror-errno-5-input-output-error-while-using-smbus-for-analog-reading-thr a call to print. I am trying to determine the cause of the exception being raised (or at least, better understand it) and how to handle it correctly. When executing the following line of Python (in a 2.6.6 interpreter, running on CentOS 5.5): print >> sys.stderr, 'Unable to do something: %s' % command The exception is raised (traceback omitted): IOError: [Errno 5] Input/output error For context, this is generally what the larger function is trying to do at http://stackoverflow.com/questions/10409897/ioerror-input-output-error-when-printing the time: from subprocess import Popen, PIPE import sys def run_commands(commands): for command in commands: try: out, err = Popen(command, shell=True, stdout=PIPE, stderr=PIPE).communicate() print >> sys.stdout, out if err: raise Exception('ERROR -- an error occurred when executing this command: %s --- err: %s' % (command, err)) except: print >> sys.stderr, 'Unable to do something: %s' % command run_commands(["ls", "echo foo"]) The >> syntax is not particularly familiar to me, it's not something I use often, and I understand that it is perhaps the least preferred way of writing to stderr. However I don't believe the alternatives would fix the underlying problem. From the documentation I have read, IOError 5 is often misused, and somewhat loosely defined, with different operating systems using it to cover different problems. The best I can see in my case is that the python process is no longer attached to the terminal/pty. As best I can tell nothing is disconnecting the process from the stdout/stderr streams - the terminal is still open for example, and everything 'appears' to be fine. Could it be caused by the child process terminating in an unclean fashion? What else might be a cause of this problem - or what other steps could I introduce to debug it further? In terms of handling the exception, I can obviously catch it, but I'm assuming this means I wont be able to print to stdout/stderr
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