Installing Code for PiFace Real Time Clock

tru dat

Solve your (tweeted) Windoze 10 problem?  Deepest sympathies.

/bin/rm -rf windoze

I must not be the only one, because a emergency update the day after fixed it.

what I didn't appreciate is that the recovey point mechanism was turned off, and my recovery points (I make one before installing new software) were gone.

Anyways. I work with Linux and Unix on the job and that ain't a dream world eather .

Dear Ms. Jan Cumps,

I apologize for initially brought your name (incorrectly) into this thread. I read the very first line of the thread and didn't realize that you may be the forum administrator overseer. To answer your question, you did not reply, comment or create any post. However, this gives me the opportunity to mention the rapid and accurate responses from this environment.

Thank you Frank.

Dear Ms. Tozer,

I have copied and will act upon the procedure you have clearly and extensively described to me. I will attempt to apply it in the near future. My Many Thanks.

I will also run your suggestion: " Can you enable the i2c port using the raspi-config command and then do:

ls /dev

You should see either i2c-0 or i2c-1 in the list, could you let us know which one it is please."

I hope your suggestions by "Richard" and Peter Oajkes did not cause undo interruptions in your activities. As for your side comments (which I did not follow), I only hope it involves healthy interaction within this friendly community.

Frank

Not an Admin but one of the Evil Minions of the Top Members Guild... even worse , without a master, chaos reigns,  Give us a purpose and nothing will get in our way, not even our master

Muhaahaahaahaa

Hi Frank, as Peter says, I'm not and admin here.

And I'm not an RPi expert eather, so if you read something that looks like advice in an RPi thread, and it's written by me, just ignore it .

Dear Ms Tozer,

I had successfully copied your code into my main folder with : cd~/ and wget instructions.

the pifacertctest.sh was listed and I could open it and see your code.

However, when I typed:

sudo ./pifacertctest.sh

the return was:

sudo: ./pifacertctest.sh :command not found

so I went ahead and typed:

chmod +x ./pifacertctest.sh

the return was:

chmod: cannot access './pifacertctest.sh ': no such file or directory

Am I missing a simple word, command or instruction ?. please comment.

NOTE:

Also I added these commands on the device I was using before (which already had an install-piface-realtimeclock.sh file next to the pifacertctest.sh.)

I did not know if i2c was enabled or if spi was still enabled. I have attached my internet board, an enc28j60, which required enabling spi . A WiPi dongle is also attached.

ADDED NOTE:

Thinking that something was basically wrong, I re-installed a fresh Jessie distribution on the device after deleting all files an re-formatting.

I ran: sudo apt-get update and sudo apt-get upgrade, adjusted time zone and keyboard.through sudo raspi-config.

I am now at the fresh  point where I need you to comment on why the system could not find your file . I am sorry for the added problem, your suddestions . . .

frank-Thank you.

Hah! Thats just linux being pig headed, run the chmod command using sudo like below. The idea being that if a user doesn't have permission to execute a file then the system isnt going to confirm that files existence either so rather than saying permission denied, it just says file not found etc... It discourages repeat attempts at illegally executing files I think!

sudo chmod +x ./pifacertctest.sh

Ive just completed the steps of downloading using wget, then sudo chmod etc.. to test it out and can confirm it does work using sudo!

edit (the below is nothing to do with the question, its just some further reading!!)

--------------------------------------------------------------------------------------------------------------

The chmod case can be quite confusing, if you are interested here is an explanation why we need to use sudo chmod in this case.

1) If we use chmod +x ./pifacertctest.sh the file becomes executable for the logged in user, on the raspberry pi that user is called "pi"

2) We need to execute the file using sudo ./pifacertctest.sh using sudo means we are no longer acting as the user "pi" but we are acting as the user "root" (or with root user privileges)

3) because the pifacertctest.sh has been made executable for the user "pi" and NOT the user "root" when we try and execute it with root priviliges (sudo), the root user doesn't have the executable permission

4) if we use sudo chmod +x ./pifacertctest.sh the file becomes executable for the root user, this is because we used sudo

5) Now the root user has permission to execute the file, its now possible to do with sudo ./pifacertctest.sh

6) if the script didnt need executing with root privileges (sudo) then we wouldnt have to sudo chmod.

Dear Ms. Tozer,

You were correct about permissions. The command sudo chmod +x ./install pifacertctest.sh apparently worked. I now have in my /home/pi folder
(in yellow gold)

install-piface-real-time-clock.sh
pifacertctest.sh
(among other files in blue)

The following is a rundown of the command line staements (Input) and replies (Output) within the teminal.

Input: ls /dev
Output: Many files, mostly ram##'s, alot of tty## 's, some vcsa#'s and loop#'s and another dozen.
(None that look like mcpXXXXXXX's ARMyyyyyyyy's or microprocessor names.)

Two positive returns:

Input: ls /dev | grep "i2c"
Output: i2c-1

Input: sudo i2cdetect -l
Output: i2c-1 i2c   20804000.i2c   I2C Adapter

Several replies showed failures:

Input: sudo systemctl start pifacertc
Output: (abreviated) Failed to start service, failed to load, and/or not found

Input: sudo systemctl start pifacertctest
Output: (abreviated) Failed to start service, failed to load, and/or not found

Input: sudo systemctl is-enabled pifacertc
Output: (abreviated) Failed to start service, failed to load, and/or not found

Input: sudo systemctl-a
Output: (abreviated) Failed to start service, failed to load, and/or not found

cat /proc/cpuinfo

ARMv7-comp processor rev 7
2.85
half .....
)x41
7
0x0
0xb76
7
BCM2708 (this may be an identifier)
900092    (this may be an identifier)
0000000070ec5112

in your screenshot on one of your replies

Input: /sys/class/i2c-dev/i2c-1/device/new-device
Output: no reply

I must tell you that within my /boot/config.txt file, both i2cand spi are enabled
dtparam=spi=on
dtparam=i2c_arm=on

can both be working simultaneosly?

Thats all I tried to do to up to this point.

I hope you understand the above and will be glad to do any other experiments
you put forth. Please ask questions. I believe the pifacertctest will eventually be successful.

However, at this point, I dont know how the integration of the github.com/piface/PiFace-Real-Time-Clock install can be invoked along with pifacertctest install since the naming between the two is different and the two code listings are inherently incompatible (maybe a poor word choice).  I wondered if you had an overall solution (vision) in mind.

Sorry for the bother and If you do not have time to continue, please tell me.
Thanks continually, Frank.