USB together with RTOS

Urs Zbinden63065

Other Parts Discussed in Thread: TMS320F2809, TMS320F28069

We ported an existing project from the TMS320F2809 to the new processor TMS320F28069.
Doing this we used for the USB communication the HID-driver from Mware.
After some bugfixing we got the driver working and the communication over USB was possible.
We use the Interrupt coming from the USB-HW to put data's in a queue, to do some treatment and give back an answer.

Now we want to use the same Firmware based on the same processor TMS320F28069 together with the TI-RTOS.
I tried to start in different ways the USB-Driver, but I didn't succeeed.
As soon as I start the OS (BIOS_start) the program hangs somwhere in "abort..."
Niow my questions are the following:

- Is it possibel to use the MWare HID-driver togehter with the RTOS?
- If yes, is there a kind of "Porting Guide" how to proceed or do you have some examples.
- If no, Is there an example for the TMS320F28069? I couldn^t find an example for this hardware.
- Do I have to define a special Interrupt together with the RTOS for the USB-Driver? Or is it done automatically?

Please give me some feedback as soon as possible.
Thanks a lot.
Best regards
Urs

over 10 years ago

0 Whitney Dewey over 10 years ago

TI__Guru 54835 points

Urs,

I don't think we have any examples like that for the F28069x, but it should be doable. The closest thing I can think of is a TI-RTOS+USB example for the F28M36x. I'm not sure how different the USB code is between the two devices, but it might be worth importing and studying.

In the TI Resource Explorer in CCS under TI-RTOS for C2000:

For the interrupt, you'll want to use the TI-RTOS Hwi module to manage the interrupt for you.

- Whitney

0 Sal Pezzino over 10 years ago in reply to Whitney Dewey

TI__Mastermind 32995 points

The usblib for the M3 on Concerto devices should be the same or only slightly different than the usblib on the C28x. There are only a few slight differences to account for the C28x architecture.

sal

0 Urs Zbinden63065 over 10 years ago in reply to Sal Pezzino

Prodigy 50 points

Finally I could solve the problem.
It was a combination of wrong interrupt number and wrong task definitions.
Regarding the interrupt number, there is a big lack of information when using the RTOS!!!! --> Offset of 32!!!!
USB0 --> 32 + 39 = 71
Regarding the task definition I recommend to define the tasks by hand and not over the GUI (*.cfg).
Especially the HWI or when you want to combine task definitions over .cfg and by hand.

Thanks and best regards

Urs

0 Whitney Dewey over 10 years ago in reply to Urs Zbinden63065

TI__Guru 54835 points

Glad you got it working! For future reference, this wiki page can be helpful when you need to figure out those interrupt numbers:

http://processors.wiki.ti.com/index.php/SYS/BIOS_for_the_28x

- Whitney

C2000™︎ microcontrollers

C2000 microcontrollers forum

USB together with RTOS