Hallo,
auch ich habe Probleme damit und bin noch auf der Suche nach dem
Fehler, wobei es sicherlich einer der unten genannten Ursachen (Quelle:
ATMEL ISP-Manual) ist. Ich bin noch bei der Messung, melde mich wieder.
ISP pinout is not correct
Verify pinout on target ISP header connector
Device does not support ISP programming mode
Verify that device supports ISP mode, and that correct IO pins are
connected.
Heavy loading on ISP pins
Connect series resistors between load and IO pins as shown here.
Too strong pullup on RESET pin
Reset pullup resistor should be more than 4.7kOhm.
Target frequency set wrong in AVR Studio
Reduce the frequency in AVR Studio to match the target board
frequency
Target does not provide enough power
Verify that the target power supply can deliver enough power to source
both application and AVRISP
SPIEN fuse disabled
Enable SPIEN fuse with a Parallel /High Voltage Serial programmer
Reset used as general IO
Use a High Voltage Serial Programmer /Parallel programmer to Change
the RSTDISBL fuse.