I tested the difference in speed between the Arduino digitalWrite() function, and other methods of direct port manipulation. The results are surprising, check it out on my website.
Thanks! Very helpful.
Got a question: "Next I tested just flipping a pin. By this I mean I just changed the pin state without knowing what the initial state was without testing. The methods of testing"
now this i what you wrote in you walkthrough and if i got it right you mean toggling (if 1, becomes 0 and if 0 becomes 1). But, if this is the case i don't understand this macro: #define sbi(port,bit) (port)|=(1<<(bit))
Basically what i don't understand is the |=, if i well remember that should be "compund" or but then if the bit 1 and you OR it with a 1 it'll still be 1, won't it? I have seen a similar setup but with XOR instead of OR. Most probably i'm the wrong one, but i can't understand why :=).
EDIT: did some googling and it looks like the secret lies in using PINB instead of PORTB ....wow, didn't know that :=) Double thanks for sharing then, i just learned a new trick!
its C not ASM.... what did you expected from a developing board? :) PICAXE is slow to in comparation with PIC :P
What may come as obvious to you and I may not be obvious to all; which is why I wrote the article. Even Arduino says it is slow, but not by how much.
yes thats true... :) after all, now we can see how slow is this...