J721EXCPXEVM: Can't see any print through Tera term(J721EXCPXEVM)

Hi,

Are you not getting any output on the console?

Can you re-try all the steps in the link mentioned by you with a different SD Card?

You are following the right link.

Share the failure logs if any.

Best Regards,
Keerthy

I already re-tried all steps several times but it draws same conclusion.

Also, when I make sdk, there were no error massages or failure logs on screen.

Do I have to change version?

I'm working on virtualbox ver.6.1.22 / ubuntu 18.04

Hi Kim,

I myself also use the ubuntu 18.04 VM. Please share the contents in the boot partition & rootfs partition top level
folders. At the very least U-Boot should come up else you are doing something fundamentally wrong while following
the steps.

Best Regards,
Keerthy

Hi,

Here are top level folder lists.

How does it looks like?

Hi,

They look correct. Are you getting any logs on the Main_UART0 console?

If there is no logs please check your USB cable connection to Main_UART. I believe if the SD
card which came along works then that can be ruled out but do check that.

Another quick test would be to copy:
$PSDK_Linux/board-support/prebuilt-binaries/tiboot3.bin
$PSDK_Linux/board-support/prebuilt-binaries/sysfw.itb
$PSDK_Linux/board-support/prebuilt-binaries/tispl.bin
$PSDK_Linux/board-support/prebuilt-binaries/u-boot.img

to /media/bosikun/BOOT

Try if you can get to U-Boot prompt with the above.

If not then there is some issue with the SD card or connection.

Also please check if the below dip switch settings for SD Boot:

...

Best Regards,
Keerthy

Hi,

I removed whole virtual environment and re-installed A to Z.

As a result, I can see only through display but still cannot see anything on tera term.

(My boot mode is SD card)

SW8 : 10000010

SW9 : 00000000

Is it right phenomena which I experiencing now?

or board should print out tera term and display?

Best Regards,
Kisik

Kisik Kim said:

As a result, I can see only through display but still cannot see anything on tera term.

So display is up but you are not seeing any single character on tera term?

if the answer to above question is yes then i only doubt the USB cable or some issue with MAIN UART port.
But you have it working with card that came with board.

Can you copy the boot partition contents of  working card that came with board to the card you have made. Try if you get prints.

- Keerthy

Hi Keerthy,

I understood how it works when setting SD card boot as your advise.

And I figured out why my device couldn't boot although following the manual.

When I make linux_fs_install_sd, my uEnv.txt file is overwritten as below.

psdk_setup_file=.psdk_setup
check_psdk_setup=load mmc 1:1 ${loadaddr} ${psdk_setup_file}

# Reset to the default environment
do_psdk_setup=env default -f -a; saveenv

# If not previously configured, then configure the environment and indicate this by writing a file
uenvcmd=if run check_psdk_setup; then echo "Already setup."; else run do_psdk_setup; mw.b ${loadaddr} 0 1; fatwrite mmc 1:1 ${loadaddr} .psdk_setup 1; reset; fi

dorprocboot=1
name_overlays=k3-j721e-vision-apps.dtbo

Best Regards,
Kisik