defective PiTFT 3.5"

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jmst
 
Posts: 1
Joined: Tue Jul 17, 2018 5:42 pm

defective PiTFT 3.5"

Post by jmst »

I bought a PiTFT 3.5" resistive touch screen last week (order 1807116-1368217649). The screen works fine, but the touch input does not work at all. Running evtest shows that it is not responsive to touches on the screen most of the time. When it does respond, the x and y coordinates are always very close the the same values, no matter where you are actually touching the screen. Below is some example output of evtest. Only about 5% of my touches are reflected here, because it usually does not register anything. This is a with a brand new Pi 3 B+. I have setup other systems with the same hardware and same process without issue.

Code: Select all

Input driver version is 1.0.1
Input device ID: bus 0x18 vendor 0x0 product 0x0 version 0x0
Input device name: "stmpe-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   1772
      Min        0
      Max     4095
    Event code 1 (ABS_Y)
      Value     48
      Min        0
      Max     4095
    Event code 24 (ABS_PRESSURE)
      Value      0
      Min        0
      Max      255
Properties:
Testing ... (interrupt to exit)
Event: time 1531863199.596813, type 3 (EV_ABS), code 1 (ABS_Y), value 33
Event: time 1531863199.596813, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 1
Event: time 1531863199.596813, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1531863199.596813, -------------- SYN_REPORT ------------
Event: time 1531863199.660634, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1531863199.660634, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1531863199.660634, -------------- SYN_REPORT ------------
Event: time 1531863199.766896, type 3 (EV_ABS), code 0 (ABS_X), value 1773
Event: time 1531863199.766896, type 3 (EV_ABS), code 1 (ABS_Y), value 45
Event: time 1531863199.766896, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 1
Event: time 1531863199.766896, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1531863199.766896, -------------- SYN_REPORT ------------
Event: time 1531863199.830841, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1531863199.830841, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1531863199.830841, -------------- SYN_REPORT ------------
Event: time 1531863210.953657, type 3 (EV_ABS), code 0 (ABS_X), value 1774
Event: time 1531863210.953657, type 3 (EV_ABS), code 1 (ABS_Y), value 13
Event: time 1531863210.953657, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1531863210.953657, -------------- SYN_REPORT ------------
Event: time 1531863211.020953, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1531863211.020953, -------------- SYN_REPORT ------------
Event: time 1531863212.131318, type 3 (EV_ABS), code 0 (ABS_X), value 1781
Event: time 1531863212.131318, type 3 (EV_ABS), code 1 (ABS_Y), value 28
Event: time 1531863212.131318, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1531863212.131318, -------------- SYN_REPORT ------------
Event: time 1531863212.200819, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1531863212.200819, -------------- SYN_REPORT ------------
Event: time 1531863216.332463, type 3 (EV_ABS), code 0 (ABS_X), value 1767
Event: time 1531863216.332463, type 3 (EV_ABS), code 1 (ABS_Y), value 10
Event: time 1531863216.332463, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1531863216.332463, -------------- SYN_REPORT ------------
Event: time 1531863216.400861, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1531863216.400861, -------------- SYN_REPORT ------------
Event: time 1531863216.902890, type 3 (EV_ABS), code 0 (ABS_X), value 1786
Event: time 1531863216.902890, type 3 (EV_ABS), code 1 (ABS_Y), value 149
Event: time 1531863216.902890, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1531863216.902890, -------------- SYN_REPORT ------------
Event: time 1531863216.970815, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1531863216.970815, -------------- SYN_REPORT ------------
Event: time 1531863217.160522, type 3 (EV_ABS), code 1 (ABS_Y), value 48
Event: time 1531863217.160522, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 1
Event: time 1531863217.160522, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1531863217.160522, -------------- SYN_REPORT ------------
Event: time 1531863217.230857, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1531863217.230857, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1531863217.230857, -------------- SYN_REPORT ------------
Event: time 1531863222.338859, type 3 (EV_ABS), code 0 (ABS_X), value 1774
Event: time 1531863222.338859, type 3 (EV_ABS), code 1 (ABS_Y), value 314
Event: time 1531863222.338859, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 20
Event: time 1531863222.338859, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1531863222.338859, -------------- SYN_REPORT ------------
Event: time 1531863222.400671, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1531863222.400671, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1531863222.400671, -------------- SYN_REPORT ------------
Event: time 1531863229.484991, type 3 (EV_ABS), code 0 (ABS_X), value 1792
Event: time 1531863229.484991, type 3 (EV_ABS), code 1 (ABS_Y), value 47
Event: time 1531863229.484991, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 7
Event: time 1531863229.484991, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1531863229.484991, -------------- SYN_REPORT ------------
Event: time 1531863229.550651, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1531863229.550651, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1531863229.550651, -------------- SYN_REPORT ------------
Event: time 1531863231.910013, type 3 (EV_ABS), code 0 (ABS_X), value 1772
Event: time 1531863231.910013, type 3 (EV_ABS), code 1 (ABS_Y), value 37
Event: time 1531863231.910013, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 11
Event: time 1531863231.910013, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1531863231.910013, -------------- SYN_REPORT ------------
Event: time 1531863231.970730, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1531863231.970730, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1531863231.970730, -------------- SYN_REPORT ------------
Event: time 1531863232.159637, type 3 (EV_ABS), code 0 (ABS_X), value 1778
Event: time 1531863232.159637, type 3 (EV_ABS), code 1 (ABS_Y), value 128
Event: time 1531863232.159637, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 29
Event: time 1531863232.159637, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1531863232.159637, -------------- SYN_REPORT ------------
Event: time 1531863232.220902, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1531863232.220902, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1531863232.220902, -------------- SYN_REPORT ------------
Event: time 1531863236.155805, type 3 (EV_ABS), code 0 (ABS_X), value 1798
Event: time 1531863236.155805, type 3 (EV_ABS), code 1 (ABS_Y), value 15
Event: time 1531863236.155805, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 1
Event: time 1531863236.155805, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1531863236.155805, -------------- SYN_REPORT ------------
Event: time 1531863236.164669, type 3 (EV_ABS), code 0 (ABS_X), value 1794
Event: time 1531863236.164669, type 3 (EV_ABS), code 1 (ABS_Y), value 18
Event: time 1531863236.164669, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 3
Event: time 1531863236.164669, -------------- SYN_REPORT ------------
Event: time 1531863236.231490, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1531863236.231490, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1531863236.231490, -------------- SYN_REPORT ------------
Event: time 1531863238.266383, type 3 (EV_ABS), code 0 (ABS_X), value 1776
Event: time 1531863238.266383, type 3 (EV_ABS), code 1 (ABS_Y), value 140
Event: time 1531863238.266383, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 3
Event: time 1531863238.266383, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1531863238.266383, -------------- SYN_REPORT ------------
Event: time 1531863238.330827, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1531863238.330827, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1531863238.330827, -------------- SYN_REPORT ------------
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