After inserting sd image on bbb board, it does not work.

Hello!

I bought BeagleBone Black.

I followed the procedure linked below.

https://eewiki.net/display/linuxonarm/BeagleBone+Black

After removing the micro SD card,
When you insert an SD card into BeagleBone, only one LED blink continuously and it appears to have no action.

I do not know why.

I have run it like this:

  1. u-boot
  1. wget -c https://rcn-ee.com/repos/git/u-boot-patches/v2017.03-rc2/0001-am335x_evm-uEnv.txt-bootz-n-fixes.patch

  2. patch -p1 < 0001``-am335x_evm-uEnv.txt-bootz-n-fixes.patch

**2.Linux Kernel**

1) git clone https://github.com/RobertCNelson/ti-linux-kernel-dev.git``

`2) git checkout origin/ti-linux-rt-4.4``.y -b tmp`

**3.Ubuntu 16.04 LTS**
1) wget -c https:``//rcn-ee.com/rootfs/eewiki/minfs/ubuntu-16.04.2-minimal-armhf-2017-03-02.tar.xz`

**4.Setup microSD card**
`
``

Are you using usb to serial connection?

if yes, can you share the serial console log.

Regards,
Madhu

Dear Madhu.

Thank you for your reply.

Please let me know how to connect the serial and I will share the log.

Thank you.

  1. u-boot
    2.Linux Kernel
    3.Ubuntu 16.04 LTS
    4.Setup microSD card
    → Do I have a procedure problem?

https://eewiki.net/display/linuxonarm/BeagleBone+Black

If you follow the above procedure, will the serial message appear on the bbb board

Thank you.

Hi,

you need to have USB to serial cable, USB interface should be
connected to your host machine and serial pins should be connected to
your BBB.

Please check the below link how to configure serial configuration on
the beaglebone black board.

https://www.google.co.in/search?q=usb+to+serial+converter+for+beaglebone+black&source=lnms&tbm=isch&sa=X&sqi=2&ved=0ahUKEwjv-NiT0NXSAhUKRo8KHVvrDvIQ_AUIBigB&biw=1215&bih=934#imgrc=1WWBsnsA_brTbM:

Once the connection is done, open terminal on your host machine and
type below commands to install some packages to get the console
access.

sudo apt-get install picocom ( these commands are for ubuntu machine
if you have any other dist, please use appropriate commands )

sudo adduser $USER dialout

picocom -b 115200 /dev/ttyUSB0

Now power up the board and check the prints on serial console.

Regards,
Madhu

Dear Madhu.

Thank you for your reply.

There is a log as attached.

I have confirmed your serial message with your help.

  1. Is this normal?
  2. Can you tell me how to write emmc in this state?
  3. Do I need to setup to connect? ssh(192.168.7.2)

I am a beginner to bbb.

Thank you.

logfile.TXT (27.6 KB)

Dear Madhu.

Thank you for your reply.

There is a log as attached.

I have confirmed your serial message with your help.

1) Is this normal?

yes

2) Can you tell me how to write emmc in this state?

documented here:

https://eewiki.net/display/linuxonarm/BeagleBone+Black#BeagleBoneBlack-eMMC

3) Do I need to setup to connect? ssh(192.168.7.2)

documented here:

https://eewiki.net/display/linuxonarm/BeagleBone+Black#BeagleBoneBlack-usbgadget

I am a beginner to bbb.

Hint, everything you need is on that page..

Regards,

your logs shows everything OK.

But don't know about LED's glowing. anyhow you can log in to your
board and you can try experimenting what you want.

By seeing logs what i can say is, u-boot, kernel image and rootfs all
are loaded well, no problem with those images.

so don't worry about those LED's, you start your next task.

Thanks,
Madhu

Dear Madhu.

When the log is checked, Bbb Is it written well in emmc?

After removing the sd card, it can not boot.

Thank you.

Did you try Robert's steps to update microSD card to eMMC?

Regards,
Madhu

Yes,

**wget https:**``**//[raw.githubusercontent.com/RobertCNelson/boot-scripts/master/tools/eMMC/bbb-eMMC-flasher-eewiki-ext4.sh](http://raw.githubusercontent.com/RobertCNelson/boot-scripts/master/tools/eMMC/bbb-eMMC-flasher-eewiki-ext4.sh)**
**chmod +x bbb-eMMC-flasher-eewiki-ext4.sh**
**sudo /bin/bash ./bbb-eMMC-flasher-eewiki-ext4.sh**

However, it will not boot without sd card.

what do you see over serial?

Regards,