On Wed, Aug 28, 2019 at 4:28 AM Scott Pannan <
scott_...@hotmail.com> wrote:
>
> Thank you for the information.
>
> Yes, I have almost admitted defeat on this. Which is terribly disappointing, because these boards are designed for this purpose.
>
> I was looking to start with the LCD, gain confidence and then extend the functionality to my own hardware hence the reason for this trajectory.
> I know Cape Manager is also part of Rasperberry Pi so maybe I am stuck at a level which is common to both platforms.
>
> I am an embedded engineer, but I haven't played too much in the Linux domain. So I am slowly geting a hold of that domain.
> Embedded devices can be tricky, but there is defined order and structure. If that is obeyed, usually you have good solid results. Especially with silicon that is high volume production.
> I am still trying to work out why this seems so "hard". I am not sure whether its a result of poor architecture, poor documentation or a combination of the two.
>
> It really does frustrate me and upsets me somewhat that we are pushing "newbies" away from development due to complexities which shouldn't be there.
>
> I have seen forum after forum, where people are completely stumped with getting overlays to work. I have even read forums posts from Robert Nelson saying that boot loader of the EMMC gets in the way of the SD boot. Which i find just completely absurd. But maybe its just do you my understanding of the architecture.
Just a couple points..
I don't use Android on these devices, thus i don't support it.. (My
Free time, is My free time. ;) )
The 4.1.x-ti kernel used by:
http://www.2net.co.uk/android4beagle.html
was really just a preview release. All the refinement and u-boot
overlay enhancements were done on the: v4.4.x/v4.9.x/v4.14.x releases.
So feel free to swap out the 4.1.x-ti with either 4.4.x-ti or 4.14.x-ti..
With the move to u-boot overlays: the version of u-boot became VERY
important, the bootrom loads u-boot from the eMMC first.. So yeah, if
the version of u-boot doesn't support overlays is installed to eMMC
you have to nuke it. ;)
Regards,
--
Robert Nelson
https://rcn-ee.com/