On Tue, May 2, 2017 at 9:46 AM, Radovan Chovan <[email protected]> wrote:
> Hi,
> I have BeagleBoneBlack(revC) and this capacitive touchscreen from Chipsee
> (https://www.logicsupply.com/bbb-exp-c/).
> From chipsee support I got this link with Debian Jessie:
> https://chipsee-us.s3.amazonaws.com/prebuilt-bbb/prebuilt-bbb-exp70-c-v2-debian-sd-20160728.tar.gz
> (with note: Currently we only have SD version for Jessie.)
>
> Now I have 16GB SD card with this Debian Jessie and with my custom stuff
> (java, sql, x11vnc, ...) installed.
> I use only 2.81GiB of space because I want copy SD card partitions to
> internal eMMC memory of my BeagleBoneBlack board.
> Internal eMMC memory has 3.56GiB of free space.
>
> When I used OS Debian 7.5 Wheezy (2014-05-14) from
> https://beagleboard.org/latest-images I could use linux command dd for
> "flashing" eMMC memory this way:
> sudo dd if=/dev/mmcblk0 of=/dev/mmcblk1 bs=10M, where mmbclk0 is SD card and
> mmcblk1 is internal eMMC memory.
>
> But there is a problem with ChipseeDebian Jessie(20160728), when I copy
> partitions via dd command, power off the board, pull out the SD card from
> BBB,
> switch SW8 to "eMMC" on Chipsee board and then power on.

you'll need to update the UUID variable in /boot/uEnv.txt along with
the parameters in /etc/fstab

>
> For one second there is an image with white background and Debian logo on it
> and then only black screen and nothing happens. Also "ping <ip address>"
> doesn't work.
> When I have SD card inserted, there is also white background and Debian logo
> on it for one second, but immediately after that, there is black screen with
> "linux penguin" in left upper corner and
> then OS Debian Jessie successfully starts.
>
> So my question is how is it possible (if at all) to flash internal eMMC
> memory with my SD card(Debian Jessie with my custom stuff)?
> I 've found file /boot/uEnv.txt with this boot rule:
> ##enable Generic eMMC Flasher:
> ##make sure, these tools are installed: dosfstools rsync
> #cmdline=init=/opt/scripts/tools/eMMC/init-eMMC-flasher-v3.sh
>
> I uncommented line "cmdline" and reboot device. But OS Debian Jessie was
> started again without any flashing to eMMC memory.
>
> I am still trying to contact with chipsee support but they reply very
> rarely.

Plug in a usb-serial adapter, you should see that eMMC flasher logging
the process over serial

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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