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Dear experts.
I have a board(J722SXH01EVM) with an HDMI interface on it,
I download the image from the latest version and make a sd boot card. It can run on the board.
image: https://www.ti.com/tool/PROCESSOR-SDK-J722S?keyMatch=j722s
l run the modetest command based on this document
root@j722s-evm:~# modetest -M tidss -p failed to open device 'tidss': No such file or directory
Why did the modetest run on the J722SXH01EVM board fail? Does the image not support display function?
Hi,
The display function is supported. Running the same command on my end yields the expected output as outlined in the documentation you have linked.
Could you share the steps you took to create your SD card?
Thank you,
Fabiana
Under this download, I downloaded two tar packages: boot-adas-j722s-evm.tar.gz and tisdk-adas-image-j722s-evm.tar.xz.
Extract the two package files into the first and second partitions of the SD card, respectively.
Then plug the sd card into the board and power on.
Maybe I'm missing some other tar file to extract?
Thanks.
Hello,
Did you use sudo when copying files to your root partition? It's possible files may have gotten missed.
We recommend following these steps to create your SD card: https://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-j722s/09_02_00_05/exports/docs/linux/Overview/Processor_SDK_Linux_create_SD_card.html#create-sd-card-with-custom-images
Thank you,
Fabiana
Hi,
yes,I used sudo command and ensured that all files were copied correctly.
According to this instruction, I used create sdcard.sh under ti-processor-sdk-linux-adas-j722s-evm-09_02_00_05/bin/ to create a default SD card startup image.
After powered on the board, the same phenomenon occurs.
I have reviewed this script and the image used is also tisdk-adas-image-j722s-evm.tar.xz
May I ask if you are using the same board J722SXH01EVM?
Thanks.
Hi,
Yes, I am using the same J722S device but I initially ran the modetest command with no issue using the edge AI WIC image: https://www.ti.com/tool/download/PROCESSOR-SDK-LINUX-AM67A
I just flashed a new SD card with the adas image and I am seeing this same issue. I see in the release notes that some issues with the display were identified and closed for this release, but the fix may have been missed. I am looking into this and will get back to you once I get some more information.
Thank you,
Fabiana
Hi,
I have verified with my team that modetest would not work on this ADAS image due to the FreeRTOS R5F display driver being used. I understand the confusion that would arise by having the SDK documentation for J722S mention the modetest utility app.
Please use the SDK for AM67 or AM67A depending on your use case.
AM67 SDK: https://www.ti.com/tool/download/PROCESSOR-SDK-LINUX-AM67
AM67A SDK: https://www.ti.com/tool/download/PROCESSOR-SDK-LINUX-AM67A
Thank you,
Fabiana
Hello,
The Display node is controlled by R5F along with all the other OpenVX nodes (besides TIDL which uses C7x-MMA) for Vision Apps performance which are OpenVX based demos for ADAS applications.
More on TIOVX, if you are interested:
Thank you,
Fabiana