Usb_bulk_example

Uri Madmon

Hi,

We would like to check USB communication by using usb_bulk_example (on pc side) and usb_dev_bulk (on the piccolo device).

During running ‘usb_dev_bulk ‘ example on the piccolo, PC identify USB connection, but we see ‘Unknown device’ instead of ‘Texas Instruments Bulk Devices ‘.

Question: How to install driver on PC side for it? We updated pc usb driver with usb_dev_bulk.inf
It seems that it is not enough, Do we need to add further files/driver

Please help us to resolve this problem.

Thanks, Uri

over 14 years ago

0 youbing bao over 12 years ago

Prodigy 205 points

i have same problem!

0 Gautam Iyer over 12 years ago

Guru 192875 points

Hi Uri,

I guess you're using F28069 controller, check the physical device on the control card, and let me know if it has a "U" in the part number.

Regards,

Gautam

0 youbing bao over 12 years ago in reply to Gautam Iyer

Prodigy 205 points

hi Gautam:

i using F28M35 .

0 Gautam Iyer over 12 years ago in reply to youbing bao

Guru 192875 points

Ohk, here's what the document says:

The inf file seems to be fine "usb_dev_bulk.inf"

What I feel is, whether the example (firmware) is properly loaded on the device's flash memory ?

Regards,

Gautam

0 youbing bao over 12 years ago in reply to Gautam Iyer

Prodigy 205 points

Hi, Gautam I'm able to compile and run the Usb_Dev_Bulk from f28m35 v201of controlsuite3.2.4 using CCS-v5.5 on Development Kit(TMDXCNCDH52C1) . But my Win XP SP3 does not able to detect the USB device correctly after restart. The steps of set up are below:

1) i load the Usb_Dev_Bulk .out to flash using ccs5.5 .and i run the program,system can detect generic bulk device immediately.

2) i Power off and restart the kit.and Windows XP SP3 detect it very slowly and finally name it "Unknown Device" under USB controller.

3) vid and pid are 0 of the "Unknown Device".i think the device is not Successful enumeration .

how to slove the problem?

thanks ,bao.

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Usb_bulk_example