Re: [U-Boot-Users] Uboot Splash Screen
Right... The arcitecture is arm, the module is a PXA270. The odd bit about this whole mess is that the 'board' is actually a business-card sized board which we plug into our main-board. That is a CCXP270 by Digi International. They shipped us the development environment which included some version of U-boot vintage 2005. Since this is almost certainly an out-of-date version of U-boot, should I update my Uboot to the most recent version?
Anyway, here's the config file: (man it's huge)
(See attached file: ccxp.h)
Roger Williamson Orbital TMS -- Colombia CE Software Engineer (443) 259-7320
On 9/18/07, Roger Williamson Williamson.Roger@orbital.com wrote:
Fellow U-booters,
I've run into an issue with my uboot, I want to display a bitmapimage when the system boots; however, all the screen does at startup is fade from white to black and back until the OS boots up. I'm currently using an LCD screen with a resolution of 640x480 (landscape) in 8 bit
mode,
and I have a bitmap with the same dimentions 640*480*8 loaded into the memory at the microcontroller's recommended memory address, and I have
the
bitmap image converted into a header file and used as the bmp_logo.h
file.
Unfortunately, the modifications I've made don't seems to change
the
fact that the screen just fades from white to black and back, or really
how
fast the screen does so--the image I'm using is mostly white with some
red
text.
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Hi, Roger!
Roger Williamson schrieb:
Right... The arcitecture is arm, the module is a PXA270. The odd bit about this whole mess is that the 'board' is actually a business-card sized board which we plug into our main-board. That is a CCXP270 by Digi International.
Did you contact them already?
They shipped us the development environment which included some version of U-boot vintage 2005. Since this is almost certainly an out-of-date version of U-boot, should I update my Uboot to the most recent version?
Generally yes. But that doesn't necessarily mean that this will solve your current problem.
I've run into an issue with my uboot, I want to display a bitmapimage when the system boots; however, all the screen does at startup is fade from white to black and back until the OS boots up.
The TFT Displays I've seen fade slowly their colors and settle with some line or block artefacts or flash when they are not clocked properly. If you let them that way for some time (several hours) the liquid crystal stuff gets polarized (or whatever effect that is) and the stripes will stay forever. Check that the clocking fits to the datasheet.
Notice: This e-mail is intended solely for use of the individual [...]
Remove that crap, when posting to public lists.
Regards,
Clemens,
The company we got he board from has become increasingly unhelpful, so I figured I'd contact the U-boot people since you are 1) bound to be more helpful, 2) have to be faster than a 1 week turn around time and 3) actually created this particular technology.
Thank you for your advice. I finally have the datasheet for the LCD screen, so I'll be modifiying the configuration for a little while. So it looks like a clocking issue. That seems resonable.
As far as that notice goes... I didn't intentionally put that there, it must be my company trying to dodge any inferred responsibilty in this email, I'll try and remove it if I can.
Roger Williamson Orbital TMS -- Colombia CE Software Engineer (443) 259-7320
Clemens Koller <clemens.koller@a nagramm.de> To Sent by: Roger Williamson u-boot-users-boun Williamson.Roger@orbital.com ces@lists.sourcef cc orge.net u-boot-users@lists.sourceforge.net Subject Re: [U-Boot-Users] Uboot Splash 09/18/2007 06:19 Screen PM
Hi, Roger!
Roger Williamson schrieb:
Right... The arcitecture is arm, the module is a PXA270. The odd bit
about
this whole mess is that the 'board' is actually a business-card sized
board
which we plug into our main-board. That is a CCXP270 by Digi International.
Did you contact them already?
They shipped us the development environment which included some version of U-boot vintage 2005. Since this is almost certainly an out-of-date version of U-boot, should I update my Uboot to the most
recent
version?
Generally yes. But that doesn't necessarily mean that this will solve your current problem.
I've run into an issue with my uboot, I want to display a bitmapimage when the system boots; however, all the screen does at startup is fade from white to black and back until the OS boots up.
The TFT Displays I've seen fade slowly their colors and settle with some line or block artefacts or flash when they are not clocked properly. If you let them that way for some time (several hours) the liquid crystal stuff gets polarized (or whatever effect that is) and the stripes will stay forever. Check that the clocking fits to the datasheet.
Notice: This e-mail is intended solely for use of the individual [...]
Remove that crap, when posting to public lists.
Regards, -- Clemens Koller _______________________________ R&D Imaging Devices Anagramm GmbH Rupert-Mayer-Str. 45/1 81379 Muenchen Germany
http://www.anagramm-technology.com Phone: +49-89-741518-50 Fax: +49-89-741518-19
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----------------------------------------- Notice: This e-mail is intended solely for use of the individual or entity to which it is addressed and may contain information that is proprietary, privileged and exempt from disclosure under applicable law. If the reader is not the intended recipient or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. This communication may also contain data subject to U.S. export laws. If so, that data subject to the International Traffic in Arms Regulation cannot be disseminated, distributed or copied to foreign nationals, residing in the U.S. or abroad, absent the express prior approval of the U.S. Department of State. If you have received this communication in error, please notify the sender by reply e-mail and destroy the e-mail message and any physical copies made of the communication. Thank you.
Hello, Roger!
Please don't top-post.
Roger Williamson schrieb:
The company we got he board from has become increasingly unhelpful,so I figured I'd contact the U-boot people since you are 1) bound to be more helpful, 2) have to be faster than a 1 week turn around time and 3) actually created this particular technology.
Thanks... my response time might be inversely proportional to the amount of blood in my caffeine. ;-)
Thank you for your advice. I finally have the datasheet for the LCDscreen, so I'll be modifiying the configuration for a little while. So it looks like a clocking issue. That seems resonable.
Check HSYNC, VSYNC and the Pixel CLK and the supply voltages if they are within the spec. (i.e. on the small standard TTL display interfaces) If the display controller has also a working driver on Linux' side, you should be able to figure out the right timing parameters for your display, too (embedded in some timing tables). Transfer that to U-Boot and see what happens.
As far as that notice goes... I didn't intentionally put that there,it must be my company trying to dodge any inferred responsibilty in this email, I'll try and remove it if I can.
Okay, some people propably won't help you if they care about this legal stuff more than I do.
Regards,
Clemens Koller __________________________________ R&D Imaging Devices Anagramm GmbH Rupert-Mayer-Straße 45/1 Linhof Werksgelände D-81379 München Tel.089-741518-50 Fax 089-741518-19 http://www.anagramm-technology.com
participants (2)
-
Clemens Koller -
Roger Williamson