Mister_E,

theres quite a difference between understanding something and doing something by yourself. After everything works all falls into place and looks logical.

For me it was important to get the starting point without inventing the wheel again.

You helped me a lot and my work goes like this:

looking at a code, trying to understand, modifiing for own needs and getting back to the beginning if everything fails.

I guess this method is acceptable. fact is: if you got enough of the time*intelligence product you can act like Conrad Zuse or Albert Einstein and invent everything from scratch.

The datasheets are very useful for programmers who are used to this kind of work. That may take years for me to get that far. If you learn something new without teacher or advisor you experience way more work and lots of wrong ways that could be avoided if only somebody tells you in the right moment NOT to do something specific. Two years ago programming Microcontrollers was mentally out of reach for me. Now Iīm doing that myself and got some useful gadgets that partly astonished my friends because they by themself donīt grasp more than basic electronics if even that bit . They thought you need an engineering degree in informatics to get that straight. for my part I got an engineering degree, but in mechanical engineering and thats really far away from electronics. Most of my student friends thought of electronics as a "never touch" thing. The guy that knew about transistors was suspicious.
But PBP and this forum make things go!

Point is: couldnīt get it done without "a little help from my friends". Thats it: Help.

Thanks a bundle.