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Focaltech PCAP controller

Hi,

I could not find any information about the firmware/settings of the Focaltech controller on your site.

We would like to get the information about how to set/retrieve the miscellanous registers via I2C (until now we worked with an EDT PCAP having a Focaltech controller on the PCAP as well, but there we found the register specifications in the PCAP document).

For the beginning it would also like to know if the sensitivity of the PCAP controller can be increased to work with up to 4mm cover glass.

Best regards

Herbert Demmel

Replies

engineering_seacomp's picture
engineering_seacomp
November 13, 2019

Hi Herbert,

There are many linux drivers out there that implment the features you are requesting.

Here is a document that gives the registers:

https://www.dropbox.com/s/88zi5huuuoc2tr6/FTS_AN_CTPM_Standard_eng_ver1.1.pdf?dl=0

The sensitivity is usually set at the factory.  There is a way to change it, reg 80-84h, but it is not permanently set.  You would have to change every reset.

Thanks,

engineering_seacomp's picture
engineering_seacomp
November 13, 2019

Hi,

Also wanted to make sure you were aware of the sample code in the design center:

https://www.displaytech-us.com/design-center