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PiTFT 2.8 Capacitive Touchscreen - touches not recognized
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PiTFT 2.8 Capacitive Touchscreen - touches not recognized

by mattotto on Sun Feb 11, 2018 2:52 pm

Hello,

I recently purchased an Adafruit PiTFT Plus 320x240 2.8" TFT + Capacitive Touchscreen (Product ID: 2423) which I've installed on a Raspberry Pi 3 Model B that I'm unable to get to respond to touch events.

I followed the instructions here: https://learn.adafruit.com/adafruit-pit ... spberry-pi

And I am using the image for the capacitive screen found here: https://s3.amazonaws.com/adafruit-raspb ... ft-28c.zip

Everything boots up and the desktop is shown on the display, but it will not respond to touch events. Input via USB keyboard and mouse are fine. Also when I run evtest it looks like the device is recognized, but no events seem to be captured:

Code: Select all | TOGGLE FULL SIZE
pi@raspberrypi:~ $ sudo evtest
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0:   ft6x06_ts
Select the device event number [0-0]: 0
Input driver version is 1.0.1
Input device ID: bus 0x0 vendor 0x0 product 0x0 version 0x0
Input device name: "ft6x06_ts"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 330 (BTN_TOUCH)
  Event type 3 (EV_ABS)
    Event code 0 (ABS_X)
      Value      0
      Min        0
      Max     4095
    Event code 1 (ABS_Y)
      Value      0
      Min        0
      Max     4095
    Event code 24 (ABS_PRESSURE)
      Value      0
      Min        0
      Max      255
    Event code 48 (ABS_MT_TOUCH_MAJOR)
      Value      0
      Min        0
      Max      255
    Event code 53 (ABS_MT_POSITION_X)
      Value      0
      Min        0
      Max     4095
    Event code 54 (ABS_MT_POSITION_Y)
      Value      0
      Min        0
      Max     4095
    Event code 57 (ABS_MT_TRACKING_ID)
      Value      0
      Min        0
      Max        2
    Event code 58 (ABS_MT_PRESSURE)
      Value      0
      Min        0
      Max      255
Properties:
Testing ... (interrupt to exit)


Any ideas on what may be the issue? Is the unit possibly defective?

Thanks
matt

mattotto
 
Posts: 1
Joined: Thu Jan 25, 2018 11:14 pm

Please be positive and constructive with your questions and comments.