TMDSSK3358: Touchscreen issue with Matrix

Peter Upczak

Part Number: TMDSSK3358

Hi, I recently re-imaged the linux sd-card that came with starter kit, using the current linux sdk prebuilt_packages.

It boots fine, but after the matrix app starts, it will not respond to LDC touch input. eventually as the ev-sk runs it will fall into a pattern where only LED D3 does a 2 blink pause 2 blink heartbeat pattern.

http://<ipaddress> to the board works fine too, I can run the applications from that but still there is no touch response at the LCD.

My suspicions:

* a missing dtb or more?

* missing matrix lib(s) or support components / drivers ?

please advise,

thanks. -pete u.

over 5 years ago

0 Nick Saulnier over 5 years ago

TI__Guru** 101910 points

Hello Pete,

Apologies for the problem you are running into here. I suspect the AM335x Starter Kit has an issue with resistive touchscreen input on Linux Processor SDKs 6.0, 6.1, 6.3. We are still looking into this, but I do not currently have access to a starter kit board to run tests.

To make sure you are seeing the same thing another customer is seeing:
* Are you using Linux Processor SDK 6.3?
* Does USB mouse input work as expected?
* Did you get a calibration screen on first boot that responded to touch?
* Once the board is running, what happens when you run evtest from the terminal and touch the screen? Does it show ABS_X, ABS_Y coordinates as expected? [in the range of (0-400,0-400) in one corner and (3000-4000, 3000-4000) in the other corner?]

Regards,

Nick

0 Peter Upczak over 5 years ago in reply to Nick Saulnier

Intellectual 965 points

Nick - your questions, one at a time:

* Are you using Linux Processor SDK 6.3?

yes. the install.bin from the website produces this top directory: ti-processor-sdk-linux-am335x-evm-06.03.00.106

* Does USB mouse input work as expected?

no usb mouse available, silly as that sounds (working from home on laptops and all that ...)

I will try to get hold of one and get back to you, just for completeness.

* Did you get a calibration screen on first boot that responded to touch?

yes, an X that when I touched it, it moved to the left and up a bit, and after I touched that, Matrix came up still with no touch response.

* Once the board is running, what happens when you run evtest from the terminal and touch the screen? Does it show ABS_X, ABS_Y coordinates as expected? [in the range of (0-400,0-400) in one corner and (3000-4000, 3000-4000) in the other corner?]

nothing extra shows up over the Matrix app home screen on the LCD, but there is sensing of touch going on. See the attached capture log (just a snippet).

Let me know if you'd like me to try anything else, happy to help you troubleshoot (I learn things this way!)

thanks, -pete u.

Fullscreen evtest.log Download

root@am335x-evm:~# evtest
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0:	gpio_buttons0
/dev/input/event1:	ti-tsc
Select the device event number [0-1]: ti-tsc
Input driver version is 1.0.1
Input device ID: bus 0x0 vendor 0x0 product 0x0 version 0x0
Input device name: "ti-tsc"
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   3649
      Min        0
      Max     4095
    Event code 1 (ABS_Y)
      Value   2663
      Min        0
      Max     4095
    Event code 24 (ABS_PRESSURE)
      Value      0
      Min        0
      Max     4095
Properties:
Testing ... (interrupt to exit)
Event: time 1591912629.954751, type 3 (EV_ABS), code 0 (ABS_X), value 4024
Event: time 1591912629.954751, type 3 (EV_ABS), code 1 (ABS_Y), value 3088
Event: time 1591912629.954751, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 60
Event: time 1591912629.954751, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1591912629.954751, -------------- SYN_REPORT ------------
Event: time 1591912629.954877, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1591912629.954877, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1591912629.954877, -------------- SYN_REPORT ------------
Event: time 1591912629.960232, type 3 (EV_ABS), code 0 (ABS_X), value 3767
Event: time 1591912629.960232, type 3 (EV_ABS), code 1 (ABS_Y), value 3530
Event: time 1591912629.960232, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 74
Event: time 1591912629.960232, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1591912629.960232, -------------- SYN_REPORT ------------
Event: time 1591912629.962051, type 3 (EV_ABS), code 0 (ABS_X), value 3719
Event: time 1591912629.962051, type 3 (EV_ABS), code 1 (ABS_Y), value 3509
Event: time 1591912629.962051, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 78
Event: time 1591912629.962051, -------------- SYN_REPORT ------------
Event: time 1591912629.964357, type 3 (EV_ABS), code 0 (ABS_X), value 3720
Event: time 1591912629.964357, type 3 (EV_ABS), code 1 (ABS_Y), value 3470
Event: time 1591912629.964357, -------------- SYN_REPORT ------------
Event: time 1591912629.966919, type 3 (EV_ABS), code 0 (ABS_X), value 3716
Event: time 1591912629.966919, type 3 (EV_ABS), code 1 (ABS_Y), value 3437
Event: time 1591912629.966919, -------------- SYN_REPORT ------------
Event: time 1591912629.968827, type 3 (EV_ABS), code 0 (ABS_X), value 3715
Event: time 1591912629.968827, type 3 (EV_ABS), code 1 (ABS_Y), value 3425
Event: time 1591912629.968827, -------------- SYN_REPORT ------------
Event: time 1591912629.970509, type 3 (EV_ABS), code 0 (ABS_X), value 3711
Event: time 1591912629.970509, type 3 (EV_ABS), code 1 (ABS_Y), value 3410
Event: time 1591912629.970509, -------------- SYN_REPORT ------------
Event: time 1591912629.972681, type 3 (EV_ABS), code 1 (ABS_Y), value 3405
Event: time 1591912629.972681, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 79
Event: time 1591912629.972681, -------------- SYN_REPORT ------------
Event: time 1591912629.974615, type 3 (EV_ABS), code 1 (ABS_Y), value 3425
Event: time 1591912629.974615, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 81
Event: time 1591912629.974615, -------------- SYN_REPORT ------------
Event: time 1591912629.976464, type 3 (EV_ABS), code 0 (ABS_X), value 3709
Event: time 1591912629.976464, type 3 (EV_ABS), code 1 (ABS_Y), value 3429
Event: time 1591912629.976464, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 85
Event: time 1591912629.976464, -------------- SYN_REPORT ------------
Event: time 1591912629.978206, type 3 (EV_ABS), code 0 (ABS_X), value 3710
Event: time 1591912629.978206, type 3 (EV_ABS), code 1 (ABS_Y), value 3425
Event: time 1591912629.978206, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 87
Event: time 1591912629.978206, -------------- SYN_REPORT ------------
Event: time 1591912629.980235, type 3 (EV_ABS), code 0 (ABS_X), value 3709
Event: time 1591912629.980235, type 3 (EV_ABS), code 1 (ABS_Y), value 3432
Event: time 1591912629.980235, -------------- SYN_REPORT ------------
Event: time 1591912629.982083, type 3 (EV_ABS), code 0 (ABS_X), value 3706
Event: time 1591912629.982083, type 3 (EV_ABS), code 1 (ABS_Y), value 3429
Event: time 1591912629.982083, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 81
Event: time 1591912629.982083, -------------- SYN_REPORT ------------
Event: time 1591912629.983985, type 3 (EV_ABS), code 0 (ABS_X), value 3705
Event: time 1591912629.983985, type 3 (EV_ABS), code 1 (ABS_Y), value 3425
Event: time 1591912629.983985, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 82
Event: time 1591912629.983985, -------------- SYN_REPORT ------------
Event: time 1591912629.986010, type 3 (EV_ABS), code 0 (ABS_X), value 3707
Event: time 1591912629.986010, type 3 (EV_ABS), code 1 (ABS_Y), value 3421
Event: time 1591912629.986010, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 89
Event: time 1591912629.986010, -------------- SYN_REPORT ------------
Event: time 1591912629.988068, type 3 (EV_ABS), code 0 (ABS_X), value 3685
Event: time 1591912629.988068, type 3 (EV_ABS), code 1 (ABS_Y), value 3417
Event: time 1591912629.988068, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 92
Event: time 1591912629.988068, -------------- SYN_REPORT ------------
Event: time 1591912629.989795, type 3 (EV_ABS), code 0 (ABS_X), value 3654
Event: time 1591912629.989795, type 3 (EV_ABS), code 1 (ABS_Y), value 3427
Event: time 1591912629.989795, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 97
Event: time 1591912629.989795, -------------- SYN_REPORT ------------
Event: time 1591912629.991722, type 3 (EV_ABS), code 0 (ABS_X), value 3657
Event: time 1591912629.991722, type 3 (EV_ABS), code 1 (ABS_Y), value 3435
Event: time 1591912629.991722, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 98
Event: time 1591912629.991722, -------------- SYN_REPORT ------------
Event: time 1591912629.993718, type 3 (EV_ABS), code 0 (ABS_X), value 3666
Event: time 1591912629.993718, type 3 (EV_ABS), code 1 (ABS_Y), value 3437
Event: time 1591912629.993718, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 102
Event: time 1591912629.993718, -------------- SYN_REPORT ------------
Event: time 1591912629.995842, type 3 (EV_ABS), code 0 (ABS_X), value 3675
Event: time 1591912629.995842, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 100
Event: time 1591912629.995842, -------------- SYN_REPORT ------------
Event: time 1591912629.997586, type 3 (EV_ABS), code 0 (ABS_X), value 3671
Event: time 1591912629.997586, type 3 (EV_ABS), code 1 (ABS_Y), value 3434
Event: time 1591912629.997586, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 101
Event: time 1591912629.997586, -------------- SYN_REPORT ------------
Event: time 1591912629.999550, type 3 (EV_ABS), code 0 (ABS_X), value 3669
Event: time 1591912629.999550, type 3 (EV_ABS), code 1 (ABS_Y), value 3430
Event: time 1591912629.999550, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 102
Event: time 1591912629.999550, -------------- SYN_REPORT ------------
Event: time 1591912630.001366, type 3 (EV_ABS), code 0 (ABS_X), value 3658
Event: time 1591912630.001366, type 3 (EV_ABS), code 1 (ABS_Y), value 3433
Event: time 1591912630.001366, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 101
Event: time 1591912630.001366, -------------- SYN_REPORT ------------
Event: time 1591912630.003383, type 3 (EV_ABS), code 0 (ABS_X), value 3662
Event: time 1591912630.003383, type 3 (EV_ABS), code 1 (ABS_Y), value 3436
Event: time 1591912630.003383, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 104
Event: time 1591912630.003383, -------------- SYN_REPORT ------------
Event: time 1591912630.005447, type 3 (EV_ABS), code 0 (ABS_X), value 3683
Event: time 1591912630.005447, type 3 (EV_ABS), code 1 (ABS_Y), value 3434
Event: time 1591912630.005447, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 101

0 RAJU KUMARKHANIYA over 5 years ago in reply to Nick Saulnier

Expert 1110 points

hii Nick Saulnier,

i'm facing same issue

i have starter kit

==> in sdk 5.02 touch screen working fine in board.

==>>while i tried with ti sdk 6.01 and 6.03 at that time touchscreen not working in matrix launcher but in terminal in lcd display at that time touch working with less accuracy

so is there in any issue with wastern waylaynd in ti sdk 6.03 ...?

because in ti sdk 5.02 touchscreen and LCD working fine so im thinking its software side issue rather than hardware...

while attach USB Mouse its working fine in TI SDK 6.03

Processors

Processors forum

TMDSSK3358: Touchscreen issue with Matrix