Re: [avr-libc-dev] stk500 and tiny45

[David Carr]

Galen,

Thanks for the help.  I was able to get it working after increasing the
SCK period per your sugguestion.  Up until now I've been using uisp with
my STK500 but I was impressed by the performance of avrdude.

Thanks,
David Carr


Galen Seitz wrote:

>David Carr <address@hidden> wrote:
>
>  
>
>>Thanks to Joerg, Anatoly and Eric et all. I have toolchain that
>>completely supports the tiny45.  I can't however convince my STK500 and
>>avrdude to program the thing.  I using SCKT3400D1 and avrdude 5.1.  I
>>also have a jumper from PORTE-RST to PB3.  Has anyone made this work?
>>
>>Thanks,
>>David Carr
>>
>>I get the following output: Note that device signature is sometimes
>>different.
>>
>>    
>>
>...snip...
>  
>
>>         Programmer Type : STK500
>>         Description     : Atmel STK500
>>         Hardware Version: 2
>>         Firmware Version: 1.15
>>         Vtarget         : 5.1 V
>>         Varef           : 3.4 V
>>         Oscillator      : 3.686 MHz
>>         SCK period      : 1.1 us
>>
>>avrdude: please define PAGEL and BS2 signals in the configuration file
>>for part ATtiny45
>>avrdude: AVR device initialized and ready to accept instructions
>>
>>Reading | ################################################## | 100% 0.01s
>>
>>avrdude: Device signature = 0x0c9200
>>avrdude: safemode: Verify error - unable to read lfuse properly.
>>Programmer may not be reliable.
>>avrdude: safemode: To protect your AVR the programming will be aborted
>>
>>avrdude done.  Thank you.
>>    
>>
>
>It looks like the factory default config for the tiny45 results in a 1
>MHz internal clock and SPI programming.  If so, you will need to
>increase the SCK period to > 4 us.
>
>galen
>  
>