• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 98 subscribers
  • Views 723 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Disable touchDriverCalibration at Power on

wang jinliang
Prodigy 50 points
Other Parts Discussed in Thread: AM3517, OMAP3530

Hi

I work with the AM3517 EVM and BSP_WINCE_ARM_A8-1.00.00.09.

Now , I want to Disable  touchDriverCalibration at Power on , Can you tell me how to do ?

Thanks.

 

  • 0
    Expert 1450 points

    Hi,

    I am not familiar with the AM3517 BSP, but generally there will be a call to TouchCalibrate() somewhere in the touchscreen driver.

    In the OMAP3530 BSP it is in the file
        C:\WINCE600\PLATFORM\TI_EVM_3530\SRC\DRIVERS\TOUCH\touchscreen.cpp

    Just comment out the call.

    Since calibration is now skipped you will probably want to add a default set of calibration data to the registry.
    Example from the OAMP3530 BSP:

    [HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\TOUCH]
        "CalibrationData"="2020,1985 3463,3508 3477,523 565,535 569,3528"

    Again, this may need adjusting for your hardware and/or touchscreen driver.

    Alternatively, if you are using the hive-based registry, you could change the touchscreen driver to check for the existence of the CalibrationData key, and only if it is not found, call TouchCalibrate.

    Best regards,
    Carsten