IOError: [Errno16] Device or resource busy - Raspberry Pi Forums

probably supernoob question, supernoob pi , python.

i'm testing out code raspberry pi user guide page 195, modified user can end script bit more gracefully.

code: select all

#!/usr/bin/env python  import rpi.gpio gpio import time  led_pin = 18  gpio.setmode(gpio.bcm) gpio.setup(led_pin, gpio.out)  loopcontrol = 1  while loopcontrol == 1:         gpio.output (led_pin, true)         time.sleep(2)         gpio.output (led_pin, false)         loopcontrol = int(raw_input("press 1 loop again: ")) 

, getting following error:
pi@raspberrypi ~ $ sudo python gpiooutput.py
traceback (most recent call last):
file "gpiooutput.py", line 9, in <module>
gpio.setup(led_pin, gpio.out)
file "/usr/local/lib/python2.7/dist-packages/rpi.gpio-0.2.0-py2.7.egg/rpi/gpio/__init__.py", line 103, in setup
f.write(id)
ioerror: [errno 16] device or resource busy
pi@raspberrypi ~ $

if change led_pin number, 23, , move circuit appropriately, runs fine. thoughts?

help!

this doesn't answer question may solve problems down line:
why running rpi.gpio 0.2.0 , not more date rpi.gpio 0.5 3a comes pre-installed in raspbian? nobody have old version , able reproduce problem now. never know - might work latest version!

way, eben's book out-of-date respect rpi.gpio before printed - such speed of development of new software.

more date information rpi.gpio module can found here:
http://code.google.com/p/raspberry-gpio ... i/examples

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