About USB

[dias11]

Dear Bill


Can you pass a link about FTDI product VDrive2. I cant find it.

Chris

[Bill Legge]

The FTDI site whilst visually neat is a logical mess and the Vdreive2 product is hiding under the 'Web Shop' button:

http://apple.clickandbuild.com/cnb/s...ts+and+Modules

The web shop uses the name 'Vinculum' but there is no explanation if this is the name of the shop, product group or whatever. It's amazing that a company with a good range of products and obviously of considerable technical expertise has names and parts probably designated by the mad hatter on one of his 'off' days.

If this link does not work the way to find it is:

1. FTDI site.
2. Select Web Shop.
3. Select 'modules'
4. And there you are, I hope.

When you get the module it will probably have outdated firmware loaded into it. My advice on dealing with this is:

1. Don't update it initially.
2. Write a test program to open files, write to the file, close, get file size and so on. All easy using RS232 at 9600 Baude without CTS/RTS control.
3. After gaining confidence that the thing works, have a go at updating the firmware. I spent a whole day trying to do it by the 'memory stick method' and failed. I then had a go at update by using the RS232 link - and it worked fine.

Updating by using RS232 needs the CTS/RTS lines to be used. There is a good circuit diagram and details on how to do it in the 'Firmware' support document. Don't bother asking questions from the tech support link - one does get a reply but, it's not of much value.

If you go along this path and run into difficulties - let me know. i've just got a 2 Gigabyte stick and all works OK. It's odd writing data logging routines where there is no restriction on record lengths or the frequency of sampling!

Regards Bill Legge

[dias11]

Dear Bill

Thanks for your reply and your comments. Ill let you know about my progess.


Thanks again
Chris