Re: [Ftdi-usb-sio-devel] ftdi_sio ttyUSB0: ftdi_set_termios FAILED to set databits/stopbits/parity

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

Hi there,

It looks like that device is not compatible with ftdi_sio

When you are searching for this kind of problem you should look for:

usb vid 1a86 pid 7523

The vendor id (vid) and product id (pid) are the keys to figuring out what
drive you need.


Look at this;

http://ubuntuforums.org/showthread.php?t=921409


According to that ubuntu link it's a ch341 device so you want a driver for
that.

---
Bill


On Wed, Dec 24, 2014 at 3:13 AM, <jen...@we...> wrote:

> Hallo,
>
> I want to programm an "Arduino Nano" from a Thinkpad T420 running Gentoo
> Linux (Kernel: 3.16.5-gentoon und ftdi & co build as  modul, 64bit)
>
>
> This happens
>
> * Arduino plugged:
> [ 184.188033] usb 2-1.1: new full-speed USB device number 4 using ehci-pci
> [ 184.274623] usb 2-1.1: New USB device found, idVendor=1a86,
> idProduct=7523
> [ 184.274636] usb 2-1.1: New USB device strings: Mfr=0, Product=2,
> SerialNumber=0
> [ 184.274643] usb 2-1.1: Product: USB2.0-Serial
> => OK
>
> * modprobe ftdi-sio:
> [ 245.363725] usbcore: registered new interface driver usbserial
> [ 245.363785] usbcore: registered new interface driver usbserial_generic
> [ 245.363839] usbserial: USB Serial support registered for generic
> [ 245.366834] usbcore: registered new interface driver ftdi_sio
> [ 245.366872] usbserial: USB Serial support registered for FTDI USB Serial
> Device
> => OK
>
> * it does not recognize the device, so it needs a little help:
> * echo 1a86 7523 > /sys/bus/usb-serial/drivers/ftdi_sio/new_id
> [ 259.876146] ftdi_sio 2-1.1:1.0: FTDI USB Serial Device converter detected
> [ 259.876300] usb 2-1.1: Detected FT8U232AM
> [ 259.876310] usb 2-1.1: Number of endpoints 3
> [ 259.876319] usb 2-1.1: Endpoint 1 MaxPacketSize 32
> [ 259.876328] usb 2-1.1: Endpoint 2 MaxPacketSize 32
> [ 259.876336] usb 2-1.1: Endpoint 3 MaxPacketSize 8
> [ 259.876344] usb 2-1.1: Setting MaxPacketSize 8
> [ 259.876531] ftdi_sio ttyUSB0: Unable to read latency timer: -32
> [ 259.876906] ftdi_sio ttyUSB0: Unable to write latency timer: -32
> [ 259.877099] usb 2-1.1: FTDI USB Serial Device converter now attached to
> ttyUSB0
> => OK
>
> * via "arduino"-IDE (last Beta 1.5.8 binary from arduino.cc)
> * Preferences: Board: Arduini Nano, Programmer: avrisp mkII, Port:
> /dev/ttyUSB0
> * load any example-programm to the board:
> [ 324.258430] ftdi_sio ttyUSB0: ftdi_set_termios FAILED to set
> databits/stopbits/parity
> [ 324.258769] ftdi_sio ttyUSB0: ftdi_set_termios urb failed to set baudrate
> [ 324.259146] ftdi_sio ttyUSB0: urb failed to clear flow control
> [ 324.259891] ftdi_sio ttyUSB0: ftdi_set_termios urb failed to set baudrate
> [ 324.260278] ftdi_sio ttyUSB0: urb failed to clear flow control
> [ 324.260645] ftdi_sio ttyUSB0: failed to get modem status: -32
> [ 324.511185] ftdi_sio ttyUSB0: failed to get modem status: -32
> [...]
> => NOT OK
> I can see the RX-led on the Arduino-board flashing - some informations
> seem to
> be sent to the device.
>
>
> On a Ubuntu 12.04 machine it all works without any problems - I can
> upload programs to the Arduino - so the hardware of the Arduino is ok.
>
> I could not find some helpful info at Google. Only the hint to press the
> reset-button on the board immetially before upload. But it does not help.
>
>
> Is there anybody who can give me a hint?
> Is it a Gentoo related problem?
> How can I check health of the tty USB0-device?
>
>
> whit helpless regards
>
> Jens
>
>
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