Where Is The AVRISP USB Programmer When I Plug It In?

[Robert L Cochran]

Bob Chiodini wrote:
>>
>>
>> I get the impression from the /var/log/messages output when I plug 
>> the programmer in to the USB port that this driver is already present 
>> in the 2.6.18-1.2257.fc5 kernel, and ttyUSB0 is a serial port, isn't 
>> it? I'm still not sure how to get avrdude to speak to the programmer. 
>> Perhaps the firmware upgrade done to it by AVRStudio will help.
>>
>> Bob
>>
> Bob,
>
> I did some poking on the bdmicro website and there is a later verion 
> of avrdude.
>
> http://download.savannah.gnu.org/releases/avrdude/
>
> You could try talking to the programmer via mincom.  Maybe there is a 
> baud rate or handshake issue.
>
> Bob...
>
I can report a happy ending to the story now. AVRStudio4 did a firmware 
upgrade to the programmer itself. When I retried avrdude using 
/dev/ttyUSB0, it worked like magic. Here is the output:

[rlc at bobcp4 bbot]$ avrdude -p m128 -P /dev/ttyUSB0 -c stk500
avrdude: stk500_recv(): programmer is not responding
avrdude: successfully opened stk500v2 device -- please use -c stk500v2

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.02s

avrdude: Device signature = 0x1e9702

avrdude: safemode: Fuses OK

avrdude done.  Thank you.

[rlc at bobcp4 bbot]$ avrdude -p m128 -P /dev/ttyUSB0 -c stk500v2

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.02s

avrdude: Device signature = 0x1e9702

avrdude: safemode: Fuses OK

avrdude done.  Thank you.

--------------------------------------------------------------------------------------

As you can see, avrdude is quite intelligent and will try different 
programmer devices as needed. I guess it was definitely worthwhile to 
check the programmer out on Microsoft Windows. There isn't a Linux 
version of AVRStudio, and I wouldn't have gotten the all-important 
firmware upgrade without it.


Bob