2020-02-26 02:36 AM
While running of resistive display,some oscillations on the texts appeared on the screen
Sometimes noise came on display.I have attached the video that shows the display noise
Capacitive touch parameters(Vsync,Hsync) have been used for Resistive touch screen
Is there any difference in Resistive and capacitive screen sync parameters ?
And what could be the reason for the display noise on screen while running .
Display Init parameters in touchGfx hardware Lcd init code
HorizontalSync = 40;
VerticalSync = 9;
AccumulatedHBP = 53;
AccumulatedVBP = 11;
AccumulatedActiveW = 533;
AccumulatedActiveH = 283;
TotalWidth = 565;
TotalHeigh = 285;
2020-03-02 11:36 PM
For me, that looks like a problem with cache configuration... Two years ago i made a gui with STemWin on a f746 disco board and there have been many bugs in the libraries. So when i enabled D-cache at initialization, immediately i got the same behaviour...
I would give this a try: Search for the call to SCB_EnableDCache and replace it with SCB_DisableDCache just for testing, if the problem still occurs.
/Charly
2020-03-07 06:13 AM
Thanks for your reply
As you said, I disabled the Dcache in my code.still the problem not solved