Re: [Ftdi-usb-sio-devel] Connection losses on Sanguinololu

[Bill R. <bil...@gm...>]

Perhaps there's some kind of usb hardware problem going on here.

You could try a different USB port, USB cable, or even connecting
through a USB hub.

The USB stack is seeing the device disconnect but not giving an error
condition. Is the 3D printer restarting the interface for some reason
perhaps?



On Mon, Jul 21, 2014 at 8:17 AM, JPT <j-...@gm...> wrote:
> Hi,
>
> is this the driver that's still built into kernel 3.6?
>
> I built a 3d printer using a Sanguinololu.
> I am experiencing connection losses. This is very annyoing in the middle
> of a print.
>
> Sanguinololu has got an onboard FT232RL (Vendor=0403, Product=6001)
>
> I tried to switch on debug log, but did not get additional output in syslog:
>   sudo modprobe ftdi_sio vendor=0x403 product=0x6001 debug
>
> When a connection loss occurs, the following is logged:
>
> 20:50:14 kernel: [245476.341732] usb 3-12: USB disconnect, device number 57
> 20:50:14 kernel: [245476.342111] ftdi_sio ttyUSB0: FTDI USB Serial
> Device converter now disconnected from ttyUSB0
> 20:50:15 kernel: [245476.611948] usb 3-12: new full-speed USB device
> number 58 using xhci_hcd
> 20:50:15 kernel: [245476.633980] usb 3-12: New USB device found,
> idVendor=0403, idProduct=6001
> 20:50:15 kernel: [245476.633990] usb 3-12: New USB device strings:
> Mfr=1, Product=2, SerialNumber=3
> 20:50:15 kernel: [245476.633995] usb 3-12: Product: FT232R USB UART
> 20:50:15 kernel: [245476.633999] usb 3-12: Manufacturer: FTDI
> 20:50:15 kernel: [245476.634003] usb 3-12: SerialNumber: AH01R0T7
> 20:50:15 kernel: [245476.636987] ftdi_sio 3-12:1.0: FTDI USB Serial
> Device converter detected
> 20:50:15 kernel: [245476.637051] usb 3-12: Detected FT232RL
> 20:50:15 kernel: [245476.637056] usb 3-12: Number of endpoints 2
> 20:50:15 kernel: [245476.637060] usb 3-12: Endpoint 1 MaxPacketSize 64
> 20:50:15 kernel: [245476.637064] usb 3-12: Endpoint 2 MaxPacketSize 64
> 20:50:15 kernel: [245476.637068] usb 3-12: Setting MaxPacketSize 64
> 20:50:15 kernel: [245476.637423] usb 3-12: FTDI USB Serial Device
> converter now attached to ttyUSB1
>
> so, it's almost instantly reconnected, but with different device file,
> because the old one is still in use by Pronterface.
>
> How could I solve this problem?
>
> thanks,
>
> JPT
>
>
>
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