[Arm-netbook] update to EOMA68 specification [was Re: 5" LCD resolution 800x480 working for EOMA but color problems may exist because of miswire]

[luke.leighton]

On Mon, Nov 11, 2013 at 11:07 AM, joem <joem at martindale-electric.co.uk> wrote:
> On Mon, 2013-11-11 at 12:43 +0800, Tom Cubie wrote:
>> On Mon, Nov 11, 2013 at 12:19 AM, joem <joem at martindale-electric.co.uk> wrote:
>> >
>> > :this is not a miswire.  the specification has now changed to reflect
>> > :what cannot now be changed.
>> >
>> >
>> >>> 5" LCD resolution 800x480 working for EOMA.
>> >>> Details here
>> >>> http://www.gplsquared.com/eoma_boot/eoma_boot.html#eoma_with_5inch_lcd
>> >>> These displays are about $16 from Aliexpress:
>> >>> http://www.aliexpress.com/item/5inch-5-TFT-LCD-LCM-RGB-800-480-Display-TOUCH/474988848.html
>> >>>
>> >>> I still notice a problem with color - Red and Blue appear to be swapped.
>> >>
>> >>  ok.  the specification's going to have to change.  we cannot modify
>> >> the CPU Card, so the spec has to be changed to match the card.  what a
>> >> pain.
>> >
>> >
>> > Hmmmppp...... The is another outstanding issue that needs resolving
>> > before the next batch goes into production - this time to do with the RS232 RX line.
>> > When connected, the entire board is able to power up through the RX line.
>> > The cubieboard1,2 and iteaduino plus and EOMA-A20 boards all have same defect
>> > because I assume all of them were designed and tested by the same engineering
>> > team from Wits with no peer review input onto the process.
>>
>> The cubieboard1,2 are not designed by wits. All the allwinner boards
>> including wits are following the allwinner reference design.
>
>
> Hmm.. MK802 also infected - so I guess everyone is infected.

 yes.  and the iMX6 is also damageable, and a hell of a lot of other SoCs.

> I put up suggestion for UART-RX repair - EOMAs and boards where internal
> 3.3V is accessible:
> http://www.gplsquared.com/eoma_boot/eoma_boot.html#uart_repair

 oo - magic: a circuit diagram.  joe if it's ok i'm going to add that
image to the elinux.org wiki ok?

l.