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Detect USB as Slave Device and PC as host in F28M35xx

Yashpal Patel49892
Expert 1835 points

Dear All,

     I am trying run usb_dev***  project in /v140/F28M35x_examples_Master I am not able to even detect the USB as Unknow device.  As I run the program usb_dev_serial I can able to see UartHandler is running and ReadUartData() where I can see in debugger it is writting data on USBRingBufWrite(&psVars->sRingBuf, pucData, ulLength); 1 byte at a time.

But I am not so confirm that data is coming out of buffer I cant see and wave on D+ and D- just for Indication it is Transmitting data. 

--> How could I check that USB is detected on serial and data is visible on D+ and D- signal lines;

Thank you ;

Praveen

  • 0
    TI__Expert 8950 points
    Praveen,

    I'm asking one of our software people to look into this. In the meantime, can you measure the voltage of the D+ and D- signals when the USB is not connected? If they're both 0V, can you measure the resistance to ground?

    Thanks,
  • 0 in reply to Adam Haun
    Expert 1835 points

    Dear Adam,

        I am able to to detect the USB Device as i plug in the card to PC , Device is detected as unknown device. There is issue with data transmission what are necessary steps  I have to follow to Receive/Transmit data to from USB/PC. 

    So Pls help me out of this.I am running usb_dev_serial  project.

    Regards

    Praveen

  • 0 in reply to Yashpal Patel49892
    Expert 1835 points
    Dear All,
    I am trying to communicate but I found there is INF file is used but how add that INF file , after some googling I came to know that I need to modify INF according to our requirement which also include some catlog file.
    I have gone through that catlog file could got anything else vid and pid but came to know that vid and pid both values are diffrent in project usb_dev_serial / usb_dev_serial.catlog / usb_dev_serial.INF file
    So I am triying to make it same going to use it further ;
    still there is problem :--

    Is INF file need to signed driver /Need Certification /Need Sign and timeStamp the Driver ??????

    Regards
    Praveen Kumar
  • 0 in reply to Yashpal Patel49892
    TI__Mastermind 32995 points
    Yes it is needed. We are planning on signing these drivers sometime in the future.

    If you are using Windows 8 you can work around the need for signed drivers. There are multiple solutions on the internet.

    sal