He is referring to my Self-read signature sketch.
That is normal known information. Search for "GET_LOW_FUSE_BITS" in "forum.arduino.cc" or "playground.arduino.cc" or in "github.com".This is the Playground : http://playground.arduino.cc/Main/ShowInfo
sig[addr] = boot_signature_byte_get (addr * 2);
Also, I don't use the setup/loop programming style - I just use int main (void) with init() at the beginning and while (1) at the end.
Which would be a relief to people who have programmed in C for the last 20 years, I am sure. I honestly wish they had left it like that. How hard is it to tell people to "initialize stuff" and then "loop to do other stuff"?
There is also https://github.com/WestfW/fusebytesIt probably doesn't compile any more; it's about 5 years old.It's not clear that being able to read this sort of information is useful.Now, did you know that you can unset the CKDIV8 at runtime? Not the fuse itself, but by modify CLKPR.Apparently, all CKDIV8 does is determine the initial value loaded into CLKPR!