Re: [avrdude-dev] avrrftdi driver port selection

[Jonathan Schneider]

On 15 Jan 2014, at 13:29, Hannes Weisbach <address@hidden> wrote:

> Am 15.01.2014 um 10:52 schrieb Jonathan Schneider <address@hidden>:
>> 
>> But I am absolutely baffled as to what port to specify.
> The FT2232D should work out of the box, if you didn’t change the
> VID/PID.
>> 
>> If I put usb:999 or even complete garbage after the -P I don’t get any kind 
>> of meaningful error but does seem to know whether I have the FT2232D plugged 
>> in regardless of -P. It looks as if port selection is somehow completely 
>> automatic and -P is ignored. What if I have more than one FT2232D ?
> You need to put the USB VID/PID of your FTDI in hex after -P like so:
> '-P 0403:6010‘.  Why did you feel the need to put '-P usb:n‘ in the
> avrdude command line?

Thank you Hannes. May I suggest the manual be updated ?

Useful to know since my FT2232D board has an EEPROM that is nominally setup 
like the JTAG section of a Marvell Sheevaplug with different IDs (if it has 
been programmed properly which it might not have been).

I tried usb:N because the manual page does mention that syntax.

There is still the question of how do deal with having more than one FT2232D 
present. It’s not a problem for me right now but could be and should be catered 
for.

Thanks,

Jon