• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 98 subscribers
  • Views 552 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DM8127 USB to Serial(FTDI) recognition

Todd Bhang
Prodigy 20 points

Hi, all

I have Davinci DM8127 EVK and have a problem about USB2Serial(FTDI) recognition of USB port.

I have to adopt the other module of GPS which has USB interface and usb2serial converter inner. So I used USB2Serial converter(FTDI) to check USB recognition.

When I plug FTDI usb cable in USB port, I can't see any message about USB recognition.

I turned on kernel config like below.

[Device Drivers ---> USB support]

<*>   Inventra Highspeed Dual Role Controller (TI, ADI, ...)

<*>     TI81XX

TI81XX usb connector's ID pin control (from usb connector)        

Driver Mode (USB Host)  --->

 <*>   USB Serial Converter support  --->

[Device Drivers ---> USB support ---> USB Serial Converter support]

[*]   USB Serial Console device support 

[*]   USB Generic Serial Driver

<*>   USB FTDI Single Port Serial Driver

 

Do I have anything missing in Kernel config? 

Or Do not it support USB host feature of FTDI?   

I think FTDI have to be get a supply of Power from USB. Is this right?

 

Thanks for your help in advance.

Todd

 

 

  • 0
    TI__Genius 11470 points

    Hello Todd,

    Welcome to the community.

    Todd Bhang said:
    Do I have anything missing in Kernel config? 

    I think you could try to compile it as kernel module. I am not sure how this one is supposed to be used, probably it doesn't matter though.

    Todd Bhang said:
    Or Do not it support USB host feature of FTDI?   

    I have not tried it before, but my guess is that you should be able to use it.


    Does your other module [GPS] works fine with your Ubuntu host?

    Does your board recognizes other USB peripherals? Other serial to USB converters? Is there something on "lsusb"? Have you tried with/without USB hub (sometimes it makes a difference)?

    Thank you.

    BR

    Vladimir

  • 0 in reply to Vladimir-XID
    Prodigy 20 points

    Hi, Vladimir

     

    Thank for your reply.

     

    I also had set kernel config as kernel module and I tested with it.

    But, I had same result as before.

     

    Does your other module [GPS] works fine with your Ubuntu host?

    => Yes, GPS module works fine in the other arm-based board that supports USB host.

    => It works fine in Ubuntu X86 PC.

     

    I heard that USB feature of DM8127 doesn't support power to usb port. is it right?

    If  so be that, I can't use DM8127 for porting GPS (My GPS module is AR1520 of qualcomm atheros)

     

    Thanks,

    Todd

  • 0 in reply to Todd Bhang
    TI__Genius 11470 points

    Hi Todd,

    I have the DM814x EVM, I have tested the above recommendations on it with just a Serial to USB converter (FTDI) and everything was fine. I will not be able to test with something more specific then that.

    Are you able to detect other USB peripherals?

    If not used, you should connect the USB ID pin to GND to in order to force Host mode.

    Please, check these:

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/t/235267.aspx

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/t/248550.aspx

    Thank you.

    BR

    Vladimir