[Ftdi-usb-sio-devel] Linux support for FT232RL not production ready

[Roger S. <ro...@tp...>]

Hi

Not sure if Bill Ryder or Greg Kroah-Hartman or some of the other names fromm google searches can help.

As is Linux specific but the only support thus far is http://www.ftdichip.com/FTSupport.htm#DriverSupport

Which hasn't helped yet.

So Any  other help greatly appreciated.

I have a problem using Linux  with the  device  from   http://www.dontronics-shop.com/super4-usb-relay-module.html

Linux support for the Super4 USB Relay Module .. using FT232RL would it be considered production ready?

The Super4 USB Relay Module  does work to a point on "puppy" linux & a few others .

I want to use this device on Ubuntu910. 

I want to be able to powercycle a broadband USB modem from the CLI  .

BUT Both devices want to use ttyUSB0.

If ttyUSB0 is NOT free (in use) the USBmodem will select ttyUSB1.

But USB0 becomes free  (or considered to be free at some level )  when it shouln't &  will select ttyUSB0.


Most Linux installation it kind of works. 
RH5, RH4, FC11,Debian Lenny (even puppy linux has this same problem)
At least All 4 relays can be set & unset from the CLI (command line interface).



The problem is  ::
on plugging in the USB cable an entry in /dev  appears. (/dev/ttyUSB0)
The entry thereafter disappears when the device is accessed or set or unset.
#lrelayset -l
the above command lists the number of devices with the SerialNumbers.
After issuing the command the (/dev/ttyUSB0) disappears.
So  subsequent USB devices want to use the same (/dev/ttyUSB0) device, causing conflicts it seems.

Perhaps that is normal,  BUT this seems bizzare to me!


The Setup on linux  is simple :

Any modern Linux distro
with 2 supplementary  files

           /usr/bin/lrelayset -l
           /usr/lib/libftd2xx.so    linked  to   libftd2xx.so.0.4.13  (http://emx.net.au/page426.htm)





On installations that don't work. IE where the "lrelayset -l"   doesn't work,
the similiarities are very similiar  to a working?? system.

 Below are listing from "lsusb -v"
on two systems. firstly kernel messages to "/var/log/messages"  compared.
 Fc11 has 5 uniq lines & ubuntu910 has 4.
10 lines are common to both.
So ubuntu must be close to working ????



COMMON :::::::::::
 ftdi_sio 3-2:1.0: FTDI USB Serial Device converter detected
 ftdi_sio 3-2:1.0: FTDI USB Serial Device converter detected
 usb 3-2: configuration #1 chosen from 1 choice
 usb 3-2: configuration #1 chosen from 1 choice
 usb 3-2: Detected FT232RL
 usb 3-2: Detected FT232RL
 usb 3-2: FTDI USB Serial Device converter now attached to ttyUSB0
 usb 3-2: FTDI USB Serial Device converter now attached to ttyUSB0
 usb 3-2: new full speed USB device using uhci_hcd and address 3
 usb 3-2: new full speed USB device using uhci_hcd and address 3

Fedora Core 11 ::::::::::::
 usb 3-2: New USB device found, idVendor=0403, idProduct=6001
 usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
 usb 3-2: Product: TCTEC USB RELAY
 usb 3-2: SerialNumber: FTSIL4VG
 usb 3-2: Manufacturer: TCTEC

 Ubuntu 910 ::::::::::::
 usb 3-2: Number of endpoints 2
 usb 3-2: Setting MaxPacketSize 64
 usb 3-2: Endpoint 1 MaxPacketSize 64
 usb 3-2: Endpoint 2 MaxPacketSize 64

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likewise
>From the "lsusb -v listings from both machines 
the listing is almost identical except for the following
3 lines

::::::::::::::::::::::::::::::::::::::::::::::::::


Bus 003 Device 002: ID 0403:6001 Future Technology Devices International, Ltd FT
Bus 003 Device 003: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) IC
 
232 USB-Serial (UART) IC

::::::::::::::::::::::::::::::::::::::::::::::::::::::

#####################################################################################
Fedora Core 11 :::::::::::::

[root@stc ~]# lsusb -v -d 0403:6001
Bus 003 Device 003: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) IC
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         8
  idVendor           0x0403 Future Technology Devices International, Ltd
  idProduct          0x6001 FT232 USB-Serial (UART) IC
  bcdDevice            6.00
  iManufacturer           1 TCTEC
  iProduct                2 TCTEC USB RELAY
  iSerial                 3 FTSIL4VG
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              320mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol    255 Vendor Specific Protocol
      iInterface              2 TCTEC USB RELAY
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
Device Status:     0x0000
  (Bus Powered)
[root@stc ~]#




Ubuntu 910::::::::::::::
root@ubuntu-laptop:~# lsusb -v  -d 0403:6001
Bus 003 Device 002: ID 0403:6001 Future Technology Devices International, Ltd FT
232 USB-Serial (UART) IC
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         8
  idVendor           0x0403 Future Technology Devices International, Ltd
  idProduct          0x6001 FT232 USB-Serial (UART) IC
  bcdDevice            6.00
  iManufacturer           1 TCTEC
  iProduct                2 TCTEC USB RELAY
  iSerial                 3 FTSIL4VG
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              320mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol    255 Vendor Specific Protocol
      iInterface              2 TCTEC USB RELAY
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
Device Status:     0x0000
  (Bus Powered)
root@ubuntu-laptop:~#



Also
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The kernel  version for lrelayset :2.6.16.
this may/may not be significant when run on different kernels ??

root@roger-laptop:~# file /usr/bin/lrelayset
/usr/bin/lrelayset: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.16, not stripped
root@roger-laptop:~#
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