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From: Will Dormann on 21 Nov 2005 20:14
Hello,

I recently purchased a USB to Serial adapter which advertises Linux
support. However, the driver CD only contains an EXE for Windows drivers.

The device info is:

T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=6547 ProdID=0232 Rev= 0.01
S: Manufacturer=ArkMicroChips
S: Product=USB-UART Controller
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=1ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms


On a Windows machine, it's:
"Huge Pine USB to Serial Ports"



Is there any hope for getting this to work under Linux? The chipset
used in the device seems to be pretty obscure.


Thanks!
-WD
From: John-Paul Stewart on 22 Nov 2005 10:56
Will Dormann wrote:
> Hello,
>
> I recently purchased a USB to Serial adapter which advertises Linux
> support.

Have you tried it? The usbserial module seems to support a wide range
of such adapters. In the kernel source (usually in /usr/src/linux) the
file Documentation/usb/usb-serial.txt contains info about supported
adapters as well as getting it to work with generic ones. Try the
generic instructions. It might just work.
From: Will Dormann on 22 Nov 2005 20:07
John-Paul Stewart wrote:
>
> Have you tried it? The usbserial module seems to support a wide range
> of such adapters. In the kernel source (usually in /usr/src/linux) the
> file Documentation/usb/usb-serial.txt contains info about supported
> adapters as well as getting it to work with generic ones. Try the
> generic instructions. It might just work.


Thanks for the tip. I wasn't aware of the generic functionality of the
driver. I was able to load the module with:

modprobe usbserial vendor=0x6547 product=0x0232

To which it replied:

drivers/usb/serial/usb-serial.c: USB Serial support registered for Generic
usbserial_generic 2-1:1.0: Generic converter detected
usb 2-1: Generic converter now attached to ttyUSB0
usbcore: registered new driver usbserial_generic
drivers/usb/serial/usb-serial.c: USB Serial Driver core v2.0


Unfortunately, I couldn't get anything to successfully interact with the
port, however.

I think I'm just going to end up getting a different cable with the
Prolific chipset.


-WD
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