We are using IMX6s with 7" resistive touch displays.
I am attempting to add a feature so the user can adjust the touch screen sensitivity. I found this article:
The only sensitivity related setting that I see is “minimum pressure.”
;If the pressure is below this level, the X/Y measurement will be discarded. If STMPE811_Min_Pressure=0 then all touches cause a X/Y measurement.
"STMPE811_Min_Pressure"=20 ;default value
The lower the value the more sensitive, correct?
That would make sense to me, but during my testing, it seems the greater the value the more sensitive. Here are my test results:
10 = touch screen is not responsive at all
15 = touch screen is responsive to finger but not stylus
20 = touch screen is responsive to finger but not stylus
40 = touch screen is responsive to both finger and stylus
If the lower the value the more sensitive, then can anyone please explain why the touch screen only works with a stylus when set to 40 and higher. That seems backwards to me. I want to confirm that my test results match the expected results.
- Colibri IMX6 DL 512MB V1.1B
- Custom carrier board
- Resistive touch screen (Shenzhen Huayuan VISLCD-070HYQPB40B23G-21TV and Kingtech PV07002LZR40B)
- Windows CE 7 1.8 (vanilla Toradex image)