We are working on new design about CPU card which include core cortex M3 LPC1850FET180.
We meet a problem.
Description of ours system
THE CPU is composed of :
1 Microcontrôler : LPC1850FET180
1 Spifi flash : S25FL032P (4 M) (code)
1 SDRAM : MT48LC4M16A2P_6A (8 M)
1 Flash parallel 32Mb: SST39VF3201B-70
Driving of display LCD TFT 5,7” (640 X 480)
Display memory LCD 0x28000000-0x28258000 (SDRAM)
Graphics library emWin SEGGER V.530 for NXP
We use double buffer to avoid Flickering effects.
But display flicker while displaying the image(GUI_DrawBitmap(&bmCB01, 0, 0)) ?
GUI_DrawBitmap(&bmCB01, 0, 0);// LCD flicker !
GUI_Delay(2000);// LCD ok
GUI_DrawBitmap(&bmCB02, 0, 0);//LCD flicker
Kindly give any suggestion.
Thank you very much Bernhard Fink,
in fact we use 24-bit color(1228800 bytes of data per frame from the SDRAM buffer into the display),
that slow down the whole execution on the bus system.
with 16-bit color all works well.
I would say that the solution is to implement it in such a way that it does not flicker. Sounds ironic, but it isn't :smileywink:
You need to check the boundary condition of your hardware and software setup.
NXP Support Team