Is this normal for a pin diagnostic?

Question

I'm trying to do the simple hello world of the pi world. I have been having problems actually turning pin 7 off. I tried moving my rib position in the socket (flipping the white side facing the sd card and away). Ive tried turn it off and on, but it just stays on.

So after some googling I came across a post that suggested checking the pin state. Below is the output of all the pins, to me I see error and think, yes that cant be good. Some calrity on the output below would be appreicated.

Pin State

new: gpio version is:  0.6.2
1  has error
2  has error
Pin 3 is HIGH!
4  has error
Pin 5 is HIGH!
6  has error
Pin 7 is HIGH!
Pin 8 is LOW
9  has error
Pin 10 is LOW
Pin 11 is LOW
Pin 12 is LOW
Pin 13 is HIGH!
14  has error
Pin 15 is LOW
Pin 16 is LOW
17  has error
Pin 18 is HIGH!
Pin 19 is LOW
20  has error
Pin 21 is HIGH!
Pin 22 is LOW
Pin 23 is LOW
Pin 24 is LOW
25  has error
Pin 26 is LOW
27  has error
28  has error
29  has error
30  has error
31  has error
32  has error
33  has error
34  has error
35  has error
36  has error
37  has error
38  has error
39  has error
40  has error

Code Source (https://www.raspberrypi.org/forums/viewtopic.php?f=91&t=93877)

import RPi.GPIO as GPIO
import time

#my b+ gpio pins
GPIO.setmode(GPIO.BOARD)
mypins =  range(1, 41)


#GPIO.setmode(GPIO.BCM)
#mypins = [2, 3, 4, 14, 15, 17, 18, 27, 22, 23, 24, 10, 9, 25, 11, 8, 7, 5, 6, 12, 13, 19, 16, 26, 20, 21]
print 'new: gpio version is: ', GPIO.VERSION

for PIR_PIN in mypins:
    try:
        GPIO.setup(PIR_PIN, GPIO.IN)
        read_input = GPIO.input(PIR_PIN)

        if read_input:
            print 'Pin', PIR_PIN, 'is HIGH!'
        else:
            print 'Pin', PIR_PIN, 'is LOW'   


    except:
        print PIR_PIN, ' has error'
        continue

print 'cleaning up and exiting'
GPIO.cleanup()

System Info

pi@raspberrypi:~ $ sudo cat /proc/cpuinfo
processor   : 0
model name  : ARMv6-compatible processor rev 7 (v6l)
BogoMIPS    : 697.95
Features    : half thumb fastmult vfp edsp java tls 
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part    : 0xb76
CPU revision    : 7

Hardware    : BCM2708
Revision    : 000e
Serial      : 00000000******

Configuration

pi@raspberrypi:~ $ lsmod |grep i2c
i2c_bcm2708             5740  0 
i2c_dev                 6578  0 
pi@raspberrypi:~ $ lsmod |grep spi
spi_bcm2835             7424  0 
pi@raspberrypi:~ $ 

Code To Turn Off and On

import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BOARD)
GPIO.setup(7, GPIO.OUT)

for i in range(50):
    GPIO.output(7, True)
    time.sleep(0.2)
    GPIO.output(7, False)

GPIO.cleanup()

GPIO Test

pi@raspberrypi:~ $ ./gpiotest 
This program checks the Pi's (user) gpios.

The program reads and writes all the gpios.  Make sure NOTHING
is connected to the gpios during this test.

The program uses the pigpio daemon which must be running.

To start the daemon use the command sudo pigpiod.

Press the ENTER key to continue or ctrl-C to abort...

Testing...
Skipped non-user gpios: 0 1 5 6 12 13 16 19 20 21 26 
Tested user gpios: 2 3 4 7 8 9 10 11 14 15 17 18 22 23 24 25 27 28 29 30 31 
Failed user gpios: None

Answer 1

Please check the /sys/class/gpio/ directory. You can only control those GPIOs which are exported to userspace. You can do this by echoing the GPIO number to /sys/class/gpio/export but be aware there may be a kernel driver which needs access to a particular GPIO, so don't mess it up.