------ Original Message ------
From: "Samer Shatta" <[email protected]>
To: [email protected]
Sent: 1/26/2014 6:14:46 PM
Subject: Re: [beagleboard] Re: try to Build LCD7 cape
ok thanks.
i have 2 questions about some components in the scheme of the 4D System
7 inch screen
1- if i have a generator that produce about 20v for LCD Backlight(my
lcd want 20 v for back light), should i build the back light circut
that get 5 volts as input and amplify it to output ?
Don't use amplify,just need DC/DC.
2-what is the function of the coil BEAD MLB-160808-0600A-N2 (L1) ?
Just reduce the interference, EMC.
Thanks in advance
On Tuesday, January 14, 2014 6:43:42 PM UTC-8, john3909 wrote:
From: Samer Shatta <[email protected]>
Reply-To: <[email protected]>
Date: Tuesday, January 14, 2014 at 10:49 AM
To: <[email protected]>
Subject: Re: [beagleboard] Re: try to Build LCD7 cape
ok
if i had no eeprom in my LCD cape design, and connect my lcd to the
BBB and open cap manager and echo the compiled device tree of my cap
to the cape manager manually .
does it work ??
i know that the eeprom function is only to tell the BBB when i
connect my cape to load the Overlay of my cape manager ,
so if i load the overlay to the cape manager manually my cape should
work with out eeprom in cape design
That is correct. You don’t need the eeprom, but you will have to load
the overlay manually.
On Tuesday, January 14, 2014 7:31:30 AM UTC-8, Samer Shatta wrote:
i can't buy one from 4D Systems or CircuitCo cause the Export
operation to my country is so hard and cost me a lot of money, so if
there is another way to find the eeprom contents that will be a good
solution for me .
On Monday, January 13, 2014 11:56:34 PM UTC-8, Terry Storm wrote:
Most of the data in the EEPROM are not used by the BBB. There are
only 2 fields from what I read.
Would be easy to just buy yourself a 4DCAPE-70T from 4D Systems, or
LCD7 from CircuitCo, and read out the EEPROM yourself. Unless that
defeats the purpose and you want to build one without buying one.
On Tuesday, 14 January 2014 07:59:31 UTC+13, Samer Shatta wrote:
Thanks for your replay
i try to ask them but there is no response up to now
On Monday, January 13, 2014 9:11:48 AM UTC-8, Gerald wrote:
My suggestion would be to ask 4DSystems.
Gerald
On Mon, Jan 13, 2014 at 10:52 AM, Samer Shatta
<[email protected]> wrote:
To make my question clear , where can i find the 4DSystem LCD7
cape eeprom (Header,EEPROM Revision,..,Pin Usage,....)
is that file is private to the 4D System company ?
Thanks in advance
On Sunday, January 12, 2014 4:51:56 PM UTC-8, Samer Shatta
wrote:
Hello
i try to build a LCD7 cape like this in the 4D systems
http://www.4dsystems.com.au/product/22/138/Beagle_Bone_LCD_Capes/4DCAPE_70T/
in the section of the eeprom
where can i find this lcd eeprom file decription (or .bin file)
to write it to my eeprom in my new cape ??
Thanks
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