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Custom Touch screen Not able to detect as multitouch device | Cypress Semiconductor

Custom Touch screen Not able to detect as multitouch device

Summary: 1 Reply, Latest post by Madhu Sudhan on 29 Jan 2016 04:24 AM PST
Verified Answers: 0
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Hi All,

I have changed the descriptors to match the multi touch descriptors. I have used USB WIZARD to create the HID Joystick Example and then i have modified the descriptors on the same code to match the Multi touch descriptors. But unfortunately device is getting detected as single touch device on windows PC. Instead i have configured to be 3 touch device.

The USB stack is made as a device .

I analysed the enumeration process in ubslyzer, the problem i found was the device is not sending the feature descriptor to the host.

Can any one please help me in this issue. I am using FM3 controller Fujitsu MB9AF312K.

I am attaching the usb descriptors can any one have a look and let me know what i am doing wrong.

I am also attaching the usblyzer capture also for reference



mady's picture
Cypress Employee
964 posts


In the device manager are you able to see any interface unbinded to the proper driver? If so, please bind it manually. Usually in applications with similar and multiple interfaces, this could be  a problem.

If not, please create a Tech Support Case.


-Madhu Sudhan

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