M4C129x USB controller , Host specification

Hello Takahiro,

A similar thread came up as well. Please see the same for the details on the post.

http://e2e.ti.com/support/microcontrollers/tiva_arm/f/908/t/394734

Regards
Amit

Hi Amit,
Thank you for your reply. I understood.

I have one more question.
Do you have any software program for EHCI electrical test for TIVA?
(Test-J, Test-K....)

For example, Sitra have also USB OTG peripheral.
The USB EHCI test is supported in software with Sitra Linux SDK.
#echo "test J" > /sys/kernel/debug/testmode


Best Regards
Taka

Hello Amit,

Thank you for your quick response.

> No there is no such test as part of the software release.
I under stood. there is not the EHCI electrical test program for TIVA.

> Secondly TM4C does not run Linux or any of the higher OS. Most of the OS are low memory footprint OS like TiRTOS, Micrium, FreeRTOS, etc.
I've known that. My goal is not a Linux OS. 　Thank you for your advice.

Best Regards
Taka

Hello Taka,

Since the USB module is OTG, it will not cover all the EHCI requirements. However the TM4C129 has passed the USB compliancy tests and is USB certified.

Regards
Amit

Hello Amit,
Thank you. You've been a great help.

> it will not cover all the EHCI requirements. However the TM4C129 has passed the USB compliancy tests and is USB certified.

Can you provide us with some test programs for EHCI when the TM4C129 has passed the compliance tests.
Maybe, you can't do that. Is that right?

Best Regards
Taka

Hello Taka,

The USB test compliancy is made from the programs like usb_dev_msc for downstream compliancy and usb_host_flash for upstream compliancy with the USB Test jig.

Regards
Amit

Hello Amit,
Thank you for your reply.
By the way, where is there "usb_host_flash"? In TiaWare?

Best Regards,
Taka

Hello Takahiro

Apologies, it was usb_host_msc

Regards
Amit

​Hi Amit,

​​Please let me ask an additional question.
I found the ​​"USB Test Mode" register on tiva data sheet.
Also, "USB Test Mode" register is defined in header file of tivaware. It was the same register contents with AM335x.

We have the operating experience on AM335x by using USB Test Mode register.
So, We used it in the same way, but ​It ​did​n't work ​on Tiva​.

​Please let me know how to use the​ ​"USB Test Mode" on tiva.

Best Regards,

Taka

Hi Amit-san,
I'm sorry to be pressing, but any update on the USB Test Mode register?
Best Regards,Taka