Beaglebone: Difference between revisions
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The [http://www.angstrom-distribution.org/repo/ angstrom linux package browser] is the place we can see if packages for BBB Cortex-A8. According to [https://en.wikipedia.org/wiki/ARM_architecture Wikipedia] the Cortex-A8 has armv7a architecture. | The [http://www.angstrom-distribution.org/repo/ angstrom linux package browser] is the place we can see if packages for BBB Cortex-A8. According to [https://en.wikipedia.org/wiki/ARM_architecture Wikipedia] the Cortex-A8 has armv7a architecture. | ||
On ubuntu, we can use '''ldconfig -v''' command to show the installed libraries and their versions. See [http://www.linuxquestions.org/questions/linux-newbie-8/bash-command-to-list-installed-libraries-and-version-numbers-654413/ here]. | On ubuntu, we can use '''ldconfig -v''' command to show the installed libraries and their versions. See [http://www.linuxquestions.org/questions/linux-newbie-8/bash-command-to-list-installed-libraries-and-version-numbers-654413/ here]. If we like to manually add libraries to ubuntu/debian, we can check the tip [http://blog.andrewbeacock.com/2007/10/how-to-add-shared-libraries-to-linuxs.html here]. | ||
== VNC == | == VNC == | ||
Revision as of 11:25, 17 July 2013
Basic
Wiki
- http://elinux.org/BeagleBone
- Downloading images and instruction from www.armhf.com
- Adafruit learning which includes flashing eMMC and other stuff.
- http://eewiki.net/display/linuxonarm/BeagleBone+Black covers a lot about BBB.
Ubuntu
- Image (~70MB) download http://www.armhf.com/index.php/download/ and how to write the image to microSD card , boot from microSD and then the internal eMMC under Ubuntu/Debian.
- Defautl username=ubuntu, password=ubuntu
- http://robotic-controls.com/learn/beaglebone/beaglebone-black-ubuntu
flashing eMMC
Hold the "User Boot" button down, and then plug in the power (USB or 5V adaptor). Keep holding down the button until you see the bank of 4 LED's light up for a few seconds. You can now release the button.
It will take anywhere from 30-45 minutes to flash the image onto the on-board chip. Once it's done, the bank of 4 LED's to the right of the Ethernet will all stay lit up at the same time. You can then power down your BeagleBone Black.
Remove the SD Card, and power up your BeagleBone Black.
My Observation
When I use the image BBB-eMMC-flasher-2013.06.20.img to put it on the microSD card with win32DiskImager, I see (from plugging SD in Ubuntu) the microSD card has 2 partitions
eMMC-Flasher -ext4 BEAGLE_BONE - vfat
where eMMC-Flasher contains an ubuntu data and BEAGLE_BONE contains only 4 files.
ID.txt - just one line MLO - 98K binary u-boot.img - 371K binary uEnv.txt - just one line
Flashing is done by pressing the 'Boot' button while connecting the power. It took 1 hour in my case when I flashed BBB-eMMC-flasher-2013.06.20.img.
However, once the microSD is flashed to eMMC, the 'eMMC-Flasher' partition will be gone and 'BEAGLE_BONE' partition is changed to include 3 new folders- App, Docs and Drivers AND some new files - START.htm, autorun.inf, README.md.
Android OS
http://icculus.org/~hendersa/android/
Configure Angstrom
http://www.gigamegablog.com/2012/01/29/beaglebone-linux-101-configuring-angstrom-linux/
Package download
opkg update opkg install XXXX opkg list | grep "gfortran"
However, at least for BBB case, I cannot find gfortran package so I cannot install R. See discussions below
The angstrom linux package browser is the place we can see if packages for BBB Cortex-A8. According to Wikipedia the Cortex-A8 has armv7a architecture.
On ubuntu, we can use ldconfig -v command to show the installed libraries and their versions. See here. If we like to manually add libraries to ubuntu/debian, we can check the tip here.
VNC
opkg update opkg install x11vnc x11vnc -bg -o %HOME/.x11vnc.log.%VNCDISPLAY -auth /var/run/gdm/auth-for-gdm*/database -display :0 -forever
Use microSD as ext storage
It is possible. See the idea in here.