[avr-chat] avrdude high-voltage programming

[Robert von Knobloch]

I am currently working on several Attiny projects. One of these needs an
extra I/O so I must use the RESET pin. This necessitates the use of
high-voltage serial programming.
I am completely unable to get AVRDUDE to talk to my STK500v2 in hvsp mode.

*************************************************************************
 avrdude -p t13 -c stk500hvsp -P /dev/ttyS1 -B 15 -t -F

avrdude: AVR device initialized and ready to accept instructions

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

avrdude: Device signature = 0x000000
avrdude: Yikes!  Invalid device signature.
avrdude: Expected signature for ATtiny13 is 1E 90 07
avrdude>
*************************************************************************
This is AVRDUDE version 5.8 on OpenSUSE 10.2

Using the same PC and STK500, over the same serial port but driven from
AVR Studio on Windows XP running in a VMware virtual machine, I can
succesfully program, read & write the part. This seems to exonerate the
hardware. Also the same combination of PC, STK500 and Tiny13 programs
fine in 'normal' mode (P stk500v2).

Has anyone experience of the high-voltage serial mode or can see what I
am doing wrong?

Many thanks,

Robert von Knobloch