Re: [Paparazzi-devel] No USB device error

[Felix Ruess]

Is that problem still persisting?

On Tue, Oct 12, 2010 at 11:51 AM, Augustin Boisvert
<address@hidden> wrote:
> Hello !
>
> I'm coming with same type issue, but a little bit more vicious. I have
> some boards (booz and twog) that can be uploaded on some PCs, but do
> not work on others. But every PC doesn't work with every autopilot.
>
> Does somebody had the same problem ? How can I fix it ?
>
> thanks
>
> AB.
>
> On Tue, Jul 27, 2010 at 08:33, Marko Thaler <address@hidden> wrote:
>> Yes, I first plug the mini USB on the Booz main board, than the other end of
>> the USB cable into my computer, and than I apply the power to the main
>> board. Nothing else is connected to the main board.
>> Marko
>>
>> On Jul 27, 2010, at 3:33 AM, <address@hidden>
>> <address@hidden> wrote:
>>
>> just to be clear, you have the USB cable plugged into the main board and the
>> computer prior to applying power to the board?
>> AJ
>>
>> -------- Original Message --------
>> Subject: Re: [Paparazzi-devel] No USB device error
>> From: Marko Thaler <address@hidden>
>> Date: Mon, July 26, 2010 3:47 pm
>> To: address@hidden
>>
>> Hello Anton,
>> I apologize for not being clear about my power supply. I power Booz with
>> adjustable power supply connected to the +- pads. At 10V the current is
>> 0.04A, which is OK.
>> I mentioned the USB input voltage just to stress that the LPC should get the
>> signal to wait for programming through USB (first connecting the USB, than
>> the power supply). In any case dmesg should show the new USB device
>> connected message, but it does not!
>> Thank you for your help,
>> Marko
>>
>>
>> On Jul 26, 2010, at 11:58 PM, <address@hidden> wrote:
>>
>> The booz board cannot be powered through 5V.  The actual power pin is not
>> routed to the board, its simply routed to detect the presence at power on.
>> You must power the board from another source.  The best source would be from
>> the + and - pads on the board.  Anythign right around 12V would be great.
>>
>> -------- Original Message --------
>> Subject: [Paparazzi-devel] No USB device error
>> From: Marko Thaler <address@hidden>
>> Date: Mon, July 26, 2010 1:23 pm
>> To: address@hidden
>>
>> Hello everybody,
>>
>> I am testing a newly assembled Booz main board. Loading the USB Boot Loader
>> went smoothly.
>>
>> However, when I try to program it through USB, I get a no USB device error.
>> USB access rights and device rules are OK. Dmesg and lsusb do not detect the
>> board.
>>
>> I have tested all the mini-USB connections on the board and everything is
>> fine. The board input voltage through USB is 5V (USB_VBUS), however
>> USB_VBUS_3V3 line (P0.23 pin) has 0V - the voltage drop on R9 is 5V!
>>
>> Any suggestions what to try next?
>>
>> Thank you for your help.
>>
>> Kind regards,
>>
>> Marko
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