STM429 LCD always vertically scroll down

[ray]

Posted on February 05, 2015 at 14:50

I run STemWin helloworld demo in my own STM429 board which has a 7'' LCD.  It can display ''Hello world'', but screen always scrolls down. Is it the problem about HSYNC/VSYNC? How can I solve this problem.

Please give me help. Thanks in advance.

[Tesla DeLorean]

Posted on February 05, 2015 at 15:21

How can I solve this problem.

Review the documentation for the panel, and contrast that with the signals your board is generating. Use a logic analyzer, paint the screen black, and put a white pixel in the top corner. Look at the syncs and clocks with respect to one/more of the colour channels.