| LCDInfo.com http://forum.lcdinfo.com/ |
|
| optrex DMF5001 T6963C refresh problem http://forum.lcdinfo.com/viewtopic.php?f=9&t=1145 |
Page 1 of 1 |
| Author: | wanna [ Mon Apr 04, 2005 11:19 ] |
| Post subject: | optrex DMF5001 T6963C refresh problem |
Hi everyone, I am having problem with DMF5001 T6963C graphic lcd. I use Rabbit2000 to control the lcd to display tape's temperature. It seems to work fine when i restart.But, if i leave the system for a while the LCD will start to display a garbage character or disiplay the same string twice on the same line(just next to its original line). If i restart the system it would work fine and after sometimes i will get the same problem again. I use for(;;) loop to read my temperature and update and send it to lcd. I also have some delay between the reading. I use scrolling 2 pages to display same informations (to enable smooth display) on top of each other- read temperature->send it to page 2->copy it to a buffer in page 1->send it to page1->scroll page 2 then scroll page 1 and repeate the step. The garbage seems to come from one page but not the other page. I had tested my scroll page before with normal output string it worked fine and i scroll between pages it didnt give me any problem. Any help would be appreciated, Thank you, Wanna, MODBREAK: Hi sorry can't help you, but in the future please do not sticky your posts, thank you! |
|
| Author: | Henri [ Thu Apr 07, 2005 21:54 ] |
| Post subject: | |
Seems that you might have some interference in the wiring between the lcd and microcontroller. Or you are driving the T6963C with too fast timing. You can also implement a periodic re-initialization and update of the whole screen. Anyway things I'd check are: -is the timing slow enough ? -maybe try using the busy flag if not already used -interference |
|
| Page 1 of 1 | All times are UTC + 2 hours |
| Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/ |
|