To be sure my waveshare driver is working correctly we need to analyze the hidraw data as explained here (under hidraw driver analysis).
But first you need to download xxd tool for RPi2 or RPi.
Before running it you need to stop some services
You should see line started with aa01 or aa00. If you don't change number 25 to lower or higher.
Instead of /dev/hidraw0 you could try /dev/hidraw1, ..