Re: [avrdude-dev] Fwd: avrdude.conf - ftdi-section

[Jason Hecker]

I think you are doing it wrong.  Try and copy or use an existing FTDI
programmer definition in the config file and get AVRDUDE to access the
FTDI part with the USB VID:PID, not via /dev/ttyUSB as SPI is not a
serial/RS232 protocol.

In the example off my page:

$ ./avrdude -c um232h -p m1280 -v -b 3750000 -U
flash:w:ATmegaBOOT_168_atmega1280.hex

The "um232h" is the definition of the FTDI programmer in avrdude.conf
and it uses the special MPSSE mode on the FTDI parts to drive the SPI
port.  Part of this definition includes the pinout as well as what
code in AVRDUDE to use (avrdtfi), what the VID:PID of the FTDI part
is.  For a starters in your case try -b 1000000 to program at 1MHz.
With the FTDI parts in MPSSE mode you aren't using traditional serial
protocols.

Jason


On 3 November 2011 04:09, Daniel Schulz <address@hidden> wrote:
> That was unfortunately not the only problem. As I wrote in my last
> posting, the FTDI-module gets disconnected by the following simple
> process:
> avrdude -p m8 -P /dev/ttyUSB0 -c avrftdi  (or even by reading out the
> fuses: avrdude -p m8 -P /dev/ttyUSB1 -c avrftdi -b 19200   -U
> lfuse:r:-:i -vvv)
> and I really don't know why?!
> The disconnect happens between these 2 lines from avrdude: (as far as
> I was able to observe it by tail -f)
>
>  Description     : FT2232D based generic programmer
>
>  avrdude info: Pin is zero val 0!
>
>
> 2011/11/2 Joerg Wunsch <address@hidden>:
>> As Daniel Schulz wrote:
>>
>>> My setup:
>>> ADBUS0 : SCK
>>> ADBUS1 : MOSI
>>> ADBUS2 : MISO
>>>
>>> ADBUS4 : RESET
>>>
>>>
>>> Is RESET correct on ADBUS4?
>>
>> I already replied that it must go to ADBUS[3], because /RESET is
>> essentially the chip select signal when performing ISP programming.
>>
>> No idea whether this was the only problem or not.
>>
>> --
>> cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL
>>
>> http://www.sax.de/~joerg/                        NIC: JW11-RIPE
>> Never trust an operating system you don't have sources for. ;-)
>>
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>
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