Hi, thx for message. Blinking LED looks easy, but first time if it not works fine first time... there are a lot of questions like: I have no interput, only NOP/cycles waiting - are my wait very slow and I can not see bliking, becouse next "state-off" will in 5 mints?. Or is my blinking too fast and my eyes see only LED-on. Of course I CAN count NOPs and I know speed of crystal. But "can" does not mean "work in real". And there is a lof of another question and bugs..

Very good point is from "Jan Waclawek" about bad power/reset and someting like that. My diods blinked, but only little time after pressed button "reset" - sometime 3-4 BIG loops of my "program"
and freeze/stop. Maybe there is a small bug in circuit..

I see a lot of reasons to ho back to AVR - I "know" AVRstudio, instruction set - school wook was moving text on LCD, speeds,direct.. Here, I still fighting with diodes (ok, Before I did not bilt circuit, ButterFly is HW without need know anytnihg from eletronics). And I still have Homeworks source codes...

English is INTERNATIONAL language and I love English, but.. I passed (lucky) exam from english and now i NEED pass exam from germany - hard learn two languages in one time. I would like improve my english but after stupid exam from german. (maybe early - my draeming girl learning english, but ..she still refusing invantions to a cinema...)

Very thx. For posts,I changed some emails with Jan and .. I have a lot of reasons (one:TIME) to stop playing with uPs for a few months and do work/school...

Very thx and have a nice day.