TMDSSK3358: New starter kit issue

Hello Frank,

AM3358 vs AM3359 will not make a difference for touchscreen. See the AM335x datasheet for information on the difference between them.

To confirm: Are you observing these issues on the Linux SDK 6.3 card, or the AM335x SDK 5.5 card? (AM335x SDK releases went up to 8.0, then we started doing the Linux SDK releases at 1.0. So AM335x SDK 5.5 is too old for me to help debug on these forums).

Please provide more details on "I use web browser, and are able to operate the application selection. But when I select one application that shall operate the LCD screen, I get the message "Please wait ..." on the LCD, then nothing more happen.". For example, how are you selecting applications? Touch? Mouse? What application are you selecting? Do different applications get a different behavior?

Note that you can use evtest in the Linux terminal to check to see if touches are getting registered when you touch the screen.

Regards,

Nick

Hello Nick,

The SDK 5.5 card is working OK with touch screen, it is the SDK 6.03 card not working.
I wanted to update to the latest release from TI.

Regarding the operation from the web browser, if I select Qt Touch icon, then Interaction icon, I then get a warning on next page that I have to use the local display on the device to interact with the application, not the web browser. When I then press the run button on the web page, then the local LCD display shows "Please wait..." and stays there forever. If I kill the touchinteractio task in Linux, from the terminal, then I get the main menu back on the local display.

I have connected an USB mouse to the starter kit, then all is working fine when using the mouse to operate the menus and applications.

Regarding the touch screen, I tested the evtest in the Linux terminal by selecting device 1.
Everytime I press the touch screen, this program start to print out events. So touch seems to be detected, but not by the Matrix App Launcher.

Best regards,

Frank

Hello Nick,

One update ...

When using an USB mouse to operate, then the Qt Touch -> Interaction does still not work.
Hanging on "Please wait..." message on LCD display.
So it is the same as when operating from web browser.

Best regards,

Frank

Hello Frank,

It looks like this is a graphics issue (QT / disabling Weston) rather than a touchscreen issue. Related e2e posts:
https://e2e.ti.com/support/processors/f/791/t/910675
https://e2e.ti.com/support/processors/f/791/p/911779/3369939

I am reassigning this to our graphics expert. However, he is on vacation for the next two weeks. So I will do what I can in the meantime.

As far as I understand it, SDK 6.3 the screen stops working if you try to run QT with Weston disabled. I do not have the hardware to run tests myself, can you try SDK 6.1?

Regards,

Nick

Hello Nick,

The touch screen does not work at all. When I boot the starter kit, the touch screen is not workong when the Matrix App is displayed for first time.
The only time the touch screen did work, was the very first boot, when screen calibration was asked for. I can then use a stylus to select the red crosses on the screen.
After this, the touch is not working anymore.

I tried a card with SDK 6.01 as you asked for, but the problem is the same also for this.

I'm not familiar with Weston, but I will check the link you sent me, thanks.

Best regards,

Frank

hi Frank Fugledal

raju here,

i'm facing same issue in ti sdk 6.03 and 6.01 in Starter kit.

also getting same issue in our custom board i.e. reference design of stater kit.

if you get any solution and/or patch work please post here.

thank you!..

regards Raju

It looks like this touchscreen issue is on AM335x Starter Kits for Linux Processor SDKs 6.0, 6.1, 6.3. Touchscreen seems to be working as expected for SDK 5.3. We are still looking into what is going on.

Regards,

Nick

hii Nick Saulnier

i have tried with 5.03 sdk but in 5.03 sdk matrix launcher not launch at boot time

even after running /etc/init.dmatrix-gui-2.0 start still matrix launcher not start in Starter Kit.

in 5.02 matrix launcher working fine.

Hello Raju,

I do not have access to an AM335x Starter Kit right now, but a coworker who tried inserting an SDK 5.3 SD card into their starter kit and powering it on did not mention any issues. Could you give some additional details about replicating your SDK 5.3 observation?

Regards,

Nick

hi Nick Saulnier

thank you for your reply...

i have installed ti-processor-sdk-linux-am335x-evm-05.03.00.07 in pc

and build using

export PATH=/home/raju/ti-processor-sdk-linux-am335x-evm-05.03.00.07/linux-devkit/sysroots/x86_64-arago-linux/usr/bin/:$PATH
cd /home/raju/ti-processor-sdk-linux-am335x-evm-05.03.00.07/board-support/linux-4.14.79+gitAUTOINC+e669d52447-ge669d52447/
# make -j4 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- distclean
make -j4 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- tisdk_am335x-evm_defconfig
make -j4 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig
make -j4  ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- zImage
make -j4  ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x-evmsk.dtb
make -j4  ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- modules

then after update modules in sd card

create sd card and boot Starter kit with same sd card

in on board touch screen matrix launcher not showing

only blank screen is coming

right now im switch to ti-processor-sdk-linux-am335x-evm-05.02.00.10 sdk in this touchscreen and matrix launcher working fine....