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AM335x WEC 7 BSP Touch driver: Resistive to Capacitive screen

Marlon Jose Masbad
Intellectual 740 points

Will the existing driver in the AM335x BSP easily adapt to Capacitive screen?

The AM335x EVM comes with a resistive touch screen and we're considering a capacitive touch screen for our product now.

Do I need to update the existing driver? Or will not care whether it's resistive or capacitive?

  • 0
    Guru 31670 points

    Marlon,

    Resistive and capactive touch are two different technologies. So the Touch screen controller used for resistive will be different from capacitive. So, since the touch controller itself is different, you must have the driver for the capacitive touch controller.

  • 0 in reply to Renjith Thomas
    Intellectual 740 points

    Can you give examples for models of capacitive touch screens that already have WEC 7 drivers? We are more of an application team so as much as possible we move away from creating drivers from scratch unless we really developed that chip or hw.

  • 0 in reply to Marlon Jose Masbad
    Guru 31670 points

    Marlon,

    Synaptics capacitive 5-finger touch panel driver is available as part of OMAP4 BSP. I don't know the exact part number. I'm not really sure about the support for other controllers. Search for "TOUCH" in your WINCE700\PLATFORM\ directory and go through the drivers supported. It will give a better picture.