Re: [avrdude-dev] [patch #7486] Patch to add FT2232C/D, FT2232H, FT4232H, usbvid, usbpid, usbdev for USB support - Based on #7062

[Hannes Weisbach]

Am 24.08.2011 um 22:08 schrieb Joerg Wunsch:

> Follow-up Comment #9, patch #7486 (project avrdude):
> 
> OK, I finally had a chance to try this on my FreeBSD machine
> (the Linux machines I've got access to don't allow me to
> access an unknown FTDI device).
> 
> I've got an OpenOCD-USB:
> 
> http://www2.embedded-projects.net/index.php?page_id=256
> 
> which I believed were compatible with the "avrftdi" wiring.
> 
> All I get is:
> 
> % ./avrdude -p m128 -c avrftdi -C avrdude.conf -B10
> 
> avrftdi.c:96 avrftdi_flush() ftdi_read_data(&ftdic, buf, 1) != 1: Device busy
> (16)
>        all fine
> avrdude: initialization failed, rc=-1
>         Double check connections and try again, or use -F to override
>         this check.
> 
> 
> avrdude done.  Thank you.
> 
> (See attachment for full -vvvv log.)
> 
> When I try the 2232HIO programmer, I get:
> 
> % ./avrdude -p m128 -c 2232HIO -C avrdude.conf -B10
> avrdude failure: invalid pin definition (pin no > 11) in config file
> pin function no 7, pin no: 0xc
> 
> avrdude done.  Thank you.
> 
The reason is, pin_direction is used unintialized. Well, technically it is 
initialized; to 0. When ftdi_set_bitmode() is called, no pin is configured as 
output. Which should be the case for data out, clock and reset (at least). Some 
dozen lines later pin_direction is initialized with the corresponding values. 
Either the initialization is moved up, or the call to ftdi_set_bitmode is moved 
down.

Regards,
Hannes