AnsweredAssumed Answered

USB FIle download ->"Snow" on LCD

Question asked by Johanan on Feb 14, 2015
Latest reply on Feb 16, 2015 by AvaTar
Using USB and FATFS, I am downloading a large file from USB to external flash (approx 2 MB), during download, I can see small random "snow" white pixels on LCD screen.
The file download is a separate FreeRTOS task, with no GUI interface whatsoever.
What could be the problem? do I need to make some synchronization between USB activity and LCD controller? (It could be due to bus issue as the frame buffer and flash are external memories)