TMDSSK3358 - USB

guido paoluzi cusani51

I managed to load my application on the evaluation board; it's almost only a simple terminal emulator connected to a remote USB device.

Unfortunately the USB device is a FTDI USB to UART adapter, and there is no driver (ftdi_sio) in the EVM board kernel for it.

So I see the device listed in "lsusb -t" output correctly after plugging it in but there is not a ttyUSBx associated with it.

What is the best way to make it work?

root@am335x-evm:/# uname -r
3.2.0

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

See this thread for guidelines: e2e.ti.com/.../228132 You may need to download the FTDI driver from http://www.ftdichip.com/

0 guido paoluzi cusani51 over 10 years ago in reply to Biser Gatchev-XID

Prodigy 235 points

Thank you very much, that seem to address my problem.
BTW Is there a good tutorial on how to recompile the kernel somewhere? And is that something I can do on the EVM? I don't have any SDK\CCS software installed on my host machine.

0 Biser Gatchev-XID over 10 years ago in reply to guido paoluzi cusani51

TI__Guru**** 393215 points

I have asked the software team to answer your last questions. They will respond directly here.

0 Yordan Kovachev over 10 years ago in reply to Biser Gatchev-XID

TI__Guru**** 161600 points

Hi,

No there isn't a guide on how to recompile directly on the board, without sdk sources. You need to follow the general linux guides, i.e.: askubuntu.com/.../whats-a-simple-way-to-recompile-the-kernel

Basically you have to source your kernel image, download packages if needed & then run menuconfig to change your kernel configuration.

However it would be far easier if you use the SDK6.0 (kernel 3.2) sources: software-dl.ti.com/.../index_FDS.html
and follow the wiki guides: processors.wiki.ti.com/.../Sitara_Linux_Software_Developer’s_Guide

Best Regards,
Yordan

0 Bin Liu over 10 years ago in reply to Yordan Kovachev

TI__Guru**** 175381 points

Yordan Kovachev said:
However it would be far easier if you use the SDK6.0 (kernel 3.2) sources: software-dl.ti.com/.../index_FDS.html

Please note that SDK6.0 is very old and no longer supported for new projects. Please use the latest Processor SDK2.0.

0 guido paoluzi cusani51 over 10 years ago in reply to Bin Liu

Prodigy 235 points

I did something wrong and the TMDSSK3358 is not booting anymore, so I downloaded the SDK 2.0 image (am335x-evm-02.00.00.00.img) and followed instruction page http://processors.wiki.ti.com/index.php/Processor_SDK_Linux_Creating_a_SD_Card_with_Windows to

0 guido paoluzi cusani51 over 10 years ago in reply to guido paoluzi cusani51

Prodigy 235 points

restart from scratch, but the image writer tells me there is not enough space on the SD card...
Now the SD card came right out of the kit box, so was I suggested to do something (i.e. update to latest SDK) that can't be done?

0 Yordan Kovachev over 10 years ago in reply to guido paoluzi cusani51

TI__Guru**** 161600 points

You are using the create-sdcard.sh, right?
You need to have at least 4GB sd card.

Maybe your sd card was somehow corrupted.. can you try to format it using dd:
sudo dd if=/dev/zero of=/dev/sdb (or whatever sdX device is your sd card).

and then run the create-sdcard.sh script.

Best Regards,
Yordan

0 guido paoluzi cusani51 over 10 years ago in reply to Yordan Kovachev

Prodigy 235 points

This is not useful. If you didn't even read carefully my replies I don't see the point of posting.
Best regards

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TMDSSK3358 - USB