we used the i.MX536&DA9053 design a hand-in meter.it has an 5.6" LCD SCREEN combine with a touch screen .we use the DA9053 touch screen interface.
in the HIM. a visual keyboard exist. but when we use finger touch the visual keyboard frame.it keep jitter and never-ending. in the SCH ,the touch screen path is very short.we use 4-cap on the X+,X-,Y+,Y- to filtering the jitter. but has no effect.evreyone,have u used have this problem?