Programowanie attiny85 przez USBasp

Witam,

Przy próbie zaprogramowania mikrokontrolera attiny85, po skompilowaniu programu,
wyświetla błąd:

(...)

avrdude: auto set sck period (because given equals null)
avrdude: warning: cannot set sck period. please check for usbasp firmware update.
avrdude: error: program enable: target doesn't answer. 1 
avrdude: initialization failed, rc=-1
         Double check connections and try again, or use -F to override
         this check.


avrdude done.  Thank you

Proszę o pomoc.

Check the wiring if there is an error.

This is English forum. Please speak English, so other people can understand you.