UPS GUI DEMO doesn't open

[richsimpson]

Followed the instructions, have the earlier screen showing some data in terminal, including SmartUPS V3.2P, Vin GOOD,BATCAP 100, Vout 5250 $

But when double click the GUIDEMO it doesn't open anything ?

I do get a new folder in the UPS folder, Pycache but never moves on to anything else

[KuranosukeOhta]

This link helps you the problem:https://www.ingenious.jp/articles/howto/raspberry-pi-howto/gpio-uart/#toc7

[newpond]

@rich, did you fix this or do you need some help?

[richsimpson]

I didn't fix it, I gave up but happy to look again if you have any tips?

[newpond]

hi rich, can you enter ls -l /dev

and confirm which serial ports are linked to which tty ports

eg serial0 -> ttyAMA0

have you added the +x permission to the UPS_GUI_demo.py file?

if not enter chmod +x UPS_GUI_demo.py

then try running it again. It should bring up a popup asking you how you want to execute, in terminal etc. just hit the execute button. let me know what you get cheers Jon

[richsimpson]

Hi and thanks for the info.

At step 4 of the README I have serial0 -> ttyAMA0 Reboot then Step 6 I get Some data back that seems to continue counting down the page with "$ SmartUPS V3.2P,Vin GOOD,BATCAP 100,Vout 5250 $" over and over. Its just off screen but maximised and I can see that happening so seems good.

At step 7 when I double click the UPS_GUI_demo.py, I get the query how to run, I select execute in terminal and a box flashes on, disappears and left with the normal desktop. If I select EXECUTE no box flashes and nothing opens.

If I go to terminal and copy that code you supplied I get "chmod: cannot access 'UPS_GUI_demo.py': No such file or directory "

The file is in /home/pi/UPSPACK_V3/UPS_GUI_py and its called "UPS_GUI_demo.py"

[richsimpson]

Just filmed the screen to see what the box was that opens and closes instantly. some permission denied.

[newpond]

HI Rich, Can you confirm what raspberry pi model you are using?

How are you connecting to the desktop environment (ie via screen with mouse and keyboard, RDP or VNC) ?

What user are you logged in as when you run the gui demo program?

Can you also show the results of the following commands

from the UPS demo folder (/home/pi/UPSPACK_V3/UPS_GUI_py ls -al

and from the /boot folder

more config.txt or sudo more config.txt (if the above command says you don't have permission)

cheers Jon

[richsimpson]

Hi Jon

Its a Pi4 8gb running debian10 buster I am logged in as Pi Connection is via VNC

Not sure I follow you completely. I opened the folder then opened termianl and ran the ls -al command. I get

start of pasting total 276 drwxr-xr-x 21 pi users 4096 Dec 17 11:55 . drwxr-xr-x 4 root root 4096 May 29 2021 .. -rw------- 1 pi users 56 Dec 17 11:55 .Xauthority -rw------- 1 pi users 11785 Dec 18 09:25 .bash_history -rw-r--r-- 1 pi users 220 May 7 2021 .bash_logout -rw-r--r-- 1 pi users 3523 May 7 2021 .bashrc drwxr-xr-x 6 pi users 4096 Oct 1 17:02 .cache drwx------ 14 pi users 4096 Oct 1 17:09 .config drwx------ 2 pi users 4096 May 29 2021 .cups drwx------ 3 root root 4096 Nov 1 09:14 .dbus -rw-r--r-- 1 pi users 35 Jul 13 12:45 .dmrc drwx------ 3 pi users 4096 May 7 2021 .gnupg drwxr-xr-x 3 pi users 4096 May 7 2021 .local drwx------ 3 pi users 4096 May 29 2021 .pki -rw-r--r-- 1 pi users 807 May 7 2021 .profile -rw-r--r-- 1 pi users 66 Jul 13 12:35 .selected_editor drwx------ 3 pi users 4096 May 30 2021 .vnc -rw-r--r-- 1 pi users 215 May 30 2021 .wget-hsts -rw------- 1 pi users 2349 Dec 17 11:55 .xsession-errors -rw------- 1 pi users 2349 Dec 17 11:46 .xsession-errors.old drwxr-xr-x 2 pi users 4096 May 7 2021 Bookshelf drwxr-xr-x 2 pi users 4096 May 7 2021 Desktop drwxr-xr-x 2 pi users 4096 May 7 2021 Documents drwxr-xr-x 2 pi users 4096 Oct 7 16:09 Downloads drwxr-xr-x 2 pi users 4096 May 7 2021 Music drwxr-xr-x 2 pi users 4096 May 7 2021 Pictures drwxr-xr-x 2 pi users 4096 May 7 2021 Public drwxr-xr-x 2 pi users 4096 May 7 2021 Templates drwxr-xr-x 6 pi users 4096 Nov 9 2020 UPSPACK_V3 drwxr-xr-x 2 pi users 4096 May 7 2021 Videos drwxr-xr-x 2 pi users 4096 Jul 13 12:36 duckdns -rw-r--r-- 1 pi users 14750 May 29 2021 get-docker.sh -rwxr-xr-x 1 pi users 18075 May 30 2021 install -rw-r--r-- 1 pi users 18075 May 30 2021 install.1 -rw-r--r-- 1 pi users 7653 Sep 18 12:26 install.sh -rw-r--r-- 1 root root 8536 May 29 2021 installer.sh -rw-r--r-- 1 root root 67096 May 30 2021 openmediavault-omvextrasorg_latest_all5.deb end of pasting

if i go to filesystem root, then open the boot folder and paste the sudo more config.txt i get a file/folder error:

more: stat of config.txt failed: No such file or directory

Is that what I was supposed to do, and if so then is that my issue, a missing item?

[newpond]

Hi Rich This is a pre build pi image I take it and not a manually installed Debian load?

It looks like you have run the ls -al command in the pi home directory and not in the /home/pi/UPSPACK_V3/UPS_GUI_py/ directory. You mentioned you opened the folder and then opened terminal. I am guessing you meant you opened the folder in file manager, which is incorrect. this is all done with in terminal itself. (nothing to do with file manager).

please open terminal (which if you are logged in as pi will open in the /home/pi directory automatically)

then type cd /home/pi/UPSPACK_V3/UPS_GUI_py

then type ls -al

what I am looking to see, is the permissions and ownership of the UPS files

the config.txt file is not in the root directory, it is in the /boot directory

so please type cd /boot more config.txt (or sudo more config.txt if that gives a permission error, which it shouldn't if you are using a pre build image)

rgds Jon

[richsimpson]

Thanks again JOn, NOt a great Linux user....

On the first command I get 👍 pi@raspberrypi:~/UPSPACK_V3/UPS_GUI_py $ ls -al total 20 drwxr-xr-x 3 pi users 4096 Oct 1 17:17 . drwxr-xr-x 6 pi users 4096 Nov 9 2020 .. -rwxrwxrwx 1 pi users 3058 Nov 9 2020 UPS_GUI_demo.py drwxr-xr-x 2 pi users 4096 Oct 1 17:17 pycache -rwxr-xr-x 1 pi users 2740 Nov 9 2020 upspackv2.py

Second command (without sudo) does bring some feedback, here it is with the sudo command too:

pi@raspberrypi:/boot $ sudo more config.txt

For more options and information see

http://rpf.io/configtxt

Some settings may impact device functionality. See link above for details

uncomment if you get no picture on HDMI for a default "safe" mode

hdmi_safe=1

uncomment this if your display has a black border of unused pixels visible

and your display can output without overscan

disable_overscan=1

uncomment the following to adjust overscan. Use positive numbers if console

goes off screen, and negative if there is too much border

overscan_left=16

overscan_right=16

overscan_top=16

overscan_bottom=16

uncomment to force a console size. By default it will be display's size minus

overscan.

framebuffer_width=1280

framebuffer_height=720

uncomment if hdmi display is not detected and composite is being output

hdmi_force_hotplug=1

uncomment to force a specific HDMI mode (this will force VGA)

hdmi_group=2 hdmi_mode=16

uncomment to force a HDMI mode rather than DVI. This can make audio work in

DMT (computer monitor) modes

hdmi_drive=2

uncomment to increase signal to HDMI, if you have interference, blanking, or

no display

config_hdmi_boost=4

uncomment for composite PAL

sdtv_mode=2

uncomment to overclock the arm. 700 MHz is the default.

arm_freq=800

Uncomment some or all of these to enable the optional hardware interfaces

dtparam=i2c_arm=on

dtparam=i2s=on

dtparam=spi=on

Uncomment this to enable infrared communication.

dtoverlay=gpio-ir,gpio_pin=17

dtoverlay=gpio-ir-tx,gpio_pin=18

Additional overlays and parameters are documented /boot/overlays/README

Enable audio (loads snd_bcm2835)

dtparam=audio=on

Enable DRM VC4 V3D drive

dtoverlay=vc4-kms-v3d max_framebuffers=2 arm_64bit=1

For 2020-08-20 - Raspberry Pi OS and newer versions

enable_uart=1 dtoverlay=disable-bt

Does that mean anything? Cheers Rich

[newpond]

Hi Rich, You're welcome. All of that looks correct as it happens.

Can you open terminal and try the following

sudo raspi-config

this will open a configuration window

select interface options then serial port

select "no" for the first option (to do with login shell) and then "yes for the second option (to enable the serial hardware itself)

then reboot if it asks you to

and then try running the UPS demo program again.

Hopefully this should now work!!!! (fingers crossed) Rgds Jon

[richsimpson]

Thanks Jon, Ok I set as you said, I think it was already that way to be honest but rebooted and...

Problem solved, its working.

Superb and thank you so much for your help on this. Top job!

[newpond]

Hi Rich, That's great news and glad I could help. Just FYI, it will be that change you made in Raspi-config that fixed it. The reason being that technically the guide you followed in the UPS documentation is wrong. This is because when you added the lines enable_uart=1 dtoverlay=disable-bt to the config.txt file as stated in point 3 of the installation guide you "automatically" enabled the serial logging to shell function, which is what caused the problem. (known issue). The documentation should really state only to add the disable-bt line and then to go into Raspi-config and made the changes I mentioned. I am guessing that when you entered the serial port config, the first item (serial logging to shell) was highlight on "yes" and you then selected "no", which turned it off. The next page re turning on the serial hardware would also have been highlighted on "yes" which you left as it was! When you rebooted, it disabled the serial logging to shell option and hey presto it started working properly! Point to note: If it asked you to reboot when you exited Raspi-config then this proves that, as it would only ask for a reboot if there was a change made in the config.

Glad its all working for you and that I could help.

Incidentally, it is possible on the raspberry pi 4 to use the UPS demo function without actually disabling and losing the bt (bluetooth) functionality. This is because the Pi4 actually has multiple uarts onboard, which things like the Pi zero doesn't have. I have both working on mine. Let me know if this is something you require and I can help with this also. (not worth mucking around with however if you don't have the need for Bluetooth)

kind regards Jon