Hi, I understand that this is a quite old topic but I'm currently writing a library for the same touch controller and, in my case, two features do not work correctly:
1. According to chapter 3.1.4 of the datasheet, every touch should contain event information and it does. However, there are four event types: Press Down, Lift Up, Contact, No event. I'm getting only Press Down and Contact, no Lift Up.
2. The controller support gestures Move Up/Down/Left/Right, Zoom In/Out but they do not work at all, the register responsible for storing gesture id is always zero. I tried to play with different min/max threshold/distance settings but without any luck.
ali_asadzadeh, did it work in your case?