[Ham-Mac] How to create a device driver???

[K6LMP]

I recently purchased on eBay a CAT cable for my  Yaesu FT-897Dthat  
has a built in signal level converter  so that it goes directly from  
the CAT port of the FT-897 to a USB port on the computer.  I thought  
this would be preferable to using the Yaesu CAT cable connected to a  
serial-USB converter, simply because it would be a cleaner and more  
compact installation.

However, the only drivers that are available from the Chinese  
manufacturer of the device are  for Windows.  I am asking if anyone  
knows where a driver might be available, or how I can get the system  
to recognize the device.

USB Prober shows the following information about this device:

Full Speed device @ 3  
(0x53540000): .............................................    
Composite device: "USB-UART Controller"
     Device Descriptor
         Descriptor Version Number:   0x0110
         Device Class:   0   (Composite)
         Device Subclass:   0
         Device Protocol:   0
         Device MaxPacketSize:   64
         Device VendorID/ProductID:   0x6547/0x0232   (unknown vendor)
         Device Version Number:   0x0001
         Number of Configurations:   1
         Manufacturer String:   1 "ArkMicroChips"
         Product String:   3 "USB-UART Controller"
         Serial Number String:   0 (none)


I found a web site in German that provides the following information  
about this device:

========


Da dieses Gerät nicht automatisch erkannt und das passende Modul  
geladen wird, muß man sich hier selbst weiterhelfen.

USB-Device:

     : Bus=02 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 3 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

Modul usbserial laden:
modprobe usbserial vendor=0×6547 product=0×0232
Damit wird dann unter /dev/ttyUSB0 ein Device-Node erstellt.

======

Apple's Sherlock translates this information as follows:

======

Since this device is not detected automatically and the suitable
module is loaded, one must help oneself here.

USB DEVICE:

     : Bus=02 Lev=01 Prnt=01 Port=01 Cnt=01 Dev # = 3 Spd=12 MxCh = 0  
D: =
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 alto = 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

Module usbserial load: modprobe usbserial vendor=0×6547
product=0×0232 thereby is then created under /dev/ttyUSB0 a DEVICE
Node.

======

The translation indicates to me that it is possible to create a  
device driver using the provided information, but I don't know enough  
about working in Linux to do it. Can anyone provide guidance on how I  
can use the information provided to create this device driver?

thanks and 73

Lew K6LMP