Controlling PandaBoard (Ubuntu OS) Expansion GPIOs using Putty Terminal Emulator from Windows 7

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This tutorial shows you how to read and write to the pandaboard gpio by using
a hyperterminal Putty. I’m using 2.6.38-1208-omap4 preinstalled ubuntu netbook.

For more info:

Using the GPIO pins on a Pandaboard

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17 thoughts on “Controlling PandaBoard (Ubuntu OS) Expansion GPIOs using Putty Terminal Emulator from Windows 7”

  • mnc22222

    July 14, 2018 at 10:01 am

    I have installed ubuntu desktop 12.04 on my pandaboard. It's showing some garbage characters in the PuTTY. Now I am trying to connect it through ssh over a lan cable. But it's showing connection refused. When I searched in the internet, it says i need to install openssh-server. Could you help on this as I am not able to get an internet connection to my pandaboard?

    Reply
  • microkle8309

    July 14, 2018 at 10:01 am

    test results for Transcend JetFlash 600 – 16 GB USB 2.0 Flash Drive TS16GJF600 (Black)

    kelvin@angrypanda:~$ sudo hdparm -tT /dev/sda2
    /dev/sda2:
    Timing cached reads: 582 MB in 2.00 seconds = 291.09 MB/sec
    Timing buffered disk reads: 60 MB in 3.04 seconds = 19.71 MB/sec

    Reply
  • Andy McIntyre

    July 14, 2018 at 10:01 am

    i got i a usb version working Ok but it is not faster, the SD card boot = 30secs to login prompt, I minute to get the desktop and 10 secs to load firefox.
    Usb version is the same except 1 minute to login and 3.5 hours to run software update instead of 1 hour, omap4-extras took over an hour!

    Despite that the USB seems a little smoother and the software centre doesn't freeze so i am sticking with it.

    It was quite easy to do, post if you need easy steps help.

    Reply
  • Andy McIntyre

    July 14, 2018 at 10:01 am

    @microkle8309 it looks straightforward, edit a file on the working sd card
    vim /boot/boot.script
    and change the root=IDXXX=867474646 bit to the usb drive label and ID but i have never formatted a pen drive to ext3.
    * RE Screen recorder, cheap trick, i use ffmpg, you can call it from the cli and tell it to catpture the desktop (or a video device like video0) and it streams to an avi file until you Ctrl C, not perfect but it works.

    Reply
  • microkle8309

    July 14, 2018 at 10:01 am

    @auntyangela

    i will make a video tutorial today once i find a screen recorder for ubuntu

    Reply
  • Andy McIntyre

    July 14, 2018 at 10:01 am

    @microkle8309 and your script please…

    Reply
  • microkle8309

    July 14, 2018 at 10:01 am

    @auntyangela
    Mine was not a micro sd. I got´╗┐ it on amazon for $16. See my other video for the picture. Yes I'm using ubuntu 11.1 preinstalled image.
    I'm currently using a usb flash drive for my file system (second stage boot) and it is SO MUCH FASTER.

    Reply
  • Andy McIntyre

    July 14, 2018 at 10:01 am

    @microkle8309
    Good feedback, thanks. My clone 10x went really slow. Was your Transcend a micro sd with a converter.
    Did you use the ubuntu-11.1-omap4.img
    Desktop is but buggy and sluggy, i cannot install flash ie no youtube.
    Server is great but i cannot get the wifi going or the usb cams.
    I was thinking of trying either a non omap4 img or maybe even angstrom distro , any advice appreciated.

    Reply
  • microkle8309

    July 14, 2018 at 10:01 am

    @auntyangela
    and I will try to improve performance by using a "second stage boot" from USB.

    Reply
  • microkle8309

    July 14, 2018 at 10:01 am

    @auntyangela

    I recently tested a 16GB Class 10 Transcend SD and compared it to a 4GB class 6 Kingston. The 11.10 ubuntu desktop preinstalled distribution. Here are the results for installation time:

    Class 6: 24 minutes
    Class 10: 13 minutes

    From login to desktop
    Class 6: 2.5 min
    Class 10: 1.5 min

    Hope this will help

    Reply
  • Andy McIntyre

    July 14, 2018 at 10:01 am

    @kle8309
    see my new reply to bjxt below

    Reply
  • Andy McIntyre

    July 14, 2018 at 10:01 am

    @bjxt
    Yay success, a cheap ass 10x from Maplins worked, i can't say whether it's quicker than the sandisk 4x i got at Asda today as she is booting right now, it's uncompressing Linux right now according to my minicom output (it takes ages i think).

    I thought this would be really hard but it's a doddle and i will soon have Ubuntu running

    Reply
  • Andy McIntyre

    July 14, 2018 at 10:01 am

    @bjxt
    sorry had a shipping delay and no time since
    hope to try at the weekend

    Reply
  • Biju Abraham

    July 14, 2018 at 10:01 am

    @auntyangela did it work with class 10?

    Reply
  • Andy McIntyre

    July 14, 2018 at 10:01 am

    @kle8309
    drats! i just got a cheap class 10, not to worry, will post back if it works or not in about a week i guess.
    It's a pandaboard ES

    Reply
  • Kelvin Le

    July 14, 2018 at 10:01 am

    @auntyangela

    I would recommend using ScanDisk SD cards. I have tried Class 4, 6, and 10 sd cards with several brands but the best result was with the Class 4 ScanDisk. Kingston class 6 was rather slow during installation. Professional Class 10 didn't work.

    Reply
  • Andy McIntyre

    July 14, 2018 at 10:01 am

    yay more pls

    using windoze to access a linux system is funny rather than cool (*|*)
    My board will be here in a few days and can't wait, i'm dreading getting ubuntu onto the sd card and getting it to fire up, if i get that far i will be happy as i run ubuntu.

    Reply

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