[avr-gcc-list] avrdude woes

[Peter Harrison]

Hi

I have installed WinAVR20060421
I have installed AVRStudio 4.12
My programmer is an AVRISP with the firmware upgraded by AVRStudion to 
the following version 2.4 as shown by the AVRStudio programmer.

Under AVRStudio, I set the isp frequency to 921.6kHz

Reading from and writing to my Mega163 proceeds in a suitably swift and 
reliable fashion.

AVRdude, invoked with the following command line:

avrdude -c avrisp2 -p m163 -B 1.1 -v -v -t

tells me that the programmer has the following attributes:

-8<----------
 Programmer Type : STK500V2
 Description     : Atmel AVR ISP mkII
 Hardware Version: 15
 Firmware Version: 2.4
 Topcard         : Unknown
 Vtarget         : 0.0 V
 Varef           : 5.0 V
 Oscillator      : 3.686 MHz
 SCK period      : 1.1 us
-8<----------

and immediately follows up with

-8<----------
avrdude: AVR device initialized and ready to accept instructions

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

avrdude: Device signature = 0xffffff
avrdude: Yikes!  Invalid device signature.
         Double check connections and try again, or use -F to override
         this check.


avrdude done.  Thank you.
-8<----------

and dumps me back to the prompt

I have looked all over the place, including the avrdude docs, and can't 
find a reason for this behaviour. Changing the SCK settings does not 
seem to make any difference. Trying to use the programmer from the 
makefile through PN2 gives me this output:

-8<----------
avrdude -p atmega32 -P com1     -c avrispv2    -U flash:w:main.hex

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude: Device signature = 0x1e9402
avrdude: NOTE: FLASH memory has been specified, an erase cycle will be 
performed
         To disable this feature, specify the -D option.
avrdude: erasing chip
avrdude: reading input file "main.hex"
avrdude: input file main.hex auto detected as Intel Hex
avrdude: writing flash (386 bytes):

Writing | avrdude: stk500v2_paged_write: write command failed with 128
################################################## | 100% 0.05s

avrdude: failed to write flash memory, rc=-1

avrdude done.  Thank you.
-8<----------

or, to put it another way, I can't make avrdude work and I don't know why.

Please help

Pete Harrison