Re: [Paparazzi-devel] problem uploading to tiny v/2.11

[Martin Mueller]

Hi Arni,
reading the device descriptor is the first part of the USB enumeration process.
The PC does not get any response from the Tiny. That could either be the cable
in general causing interference (e.g. too long, shorts between lines), the D-
line is broken or the USB part in the LPC2148 is damaged (unlikely).

- no flashing Tiny LEDs if plugged: Vbus line ok as it switches the Tiny into
bootloader mode
- PC detects new USB full speed device: D+ line ok as 1.5k pull-up seen by PC



Martin




"Árni Þorvaldsson" <address@hidden> hat am 13. Juni 2012 um 11:31 geschrieben:

> hi here is the dmesg command
>
> address@hidden:~$ dmesg | tail
> [84103.912049] usb 5-1: device descriptor read/64, error -71
> [84104.140029] usb 5-1: device descriptor read/64, error -71
> [84104.412036] usb 5-1: new full speed USB device using uhci_hcd and address
> 114
> [84104.592038] usb 5-1: device descriptor read/64, error -71
> [84104.816049] usb 5-1: device descriptor read/64, error -71
> [84105.032043] usb 5-1: new full speed USB device using uhci_hcd and address
> 115
> [84105.440034] usb 5-1: device not accepting address 115, error -71
> [84105.552036] usb 5-1: new full speed USB device using uhci_hcd and address
> 116
> [84105.964027] usb 5-1: device not accepting address 116, error -71
> [84105.964051] hub 5-0:1.0: unable to enumerate USB device on port 1
>
> regards Arni
> ________________________________________
> Frá: address@hidden
> address@hidden fyrir h&#246;nd Gareth
> Roberts address@hidden
> Sent: 12. júní 2012 15:18
> To: address@hidden
> Efni: Re: [Paparazzi-devel] problem uploading to tiny v/2.11
>
> Hi Arni,
>
> What does the dmesg command report just after you've plugged it in?
>
> Cheers,
> Gareth
>
> On Tue, 12 Jun 2012 15:20:13 +0100, Árni Þorvaldsson <address@hidden>
> wrote:
>
> > Hi all, I am working with paparazzi on tiny v/2.11.
> > Currently I am having problem uploading. I am using
> > airframe: funjet_example
> > flight plan:basic
> > radio:cockpitSX
> > telemetry:default.xml
> >
> > I plug USB and then power the board.
> > I get the error
> >
> > no USB device
> > make[1]: *** [upload] Error 1
> > make[1]: Leaving directory `/home/mav/paparazzi/sw/airborne'
> > make: *** [ap.upload] Error 2
> > make: Leaving directory `/home/mav/paparazzi'
> >
> > I also noticed that the red and yellow led lights on the board does not
> > blink when usb is connected and then the battery. It blinks if I connect
> > it only to the battery.
> > I was wondering if it's a hardware problem because it used to work
> > before.
> > Kind regards Arni
> >
> > _______________________________________________
> > Paparazzi-devel mailing list
> > address@hidden
> > https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>
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