Usart Questions

[falingtrea]

Unless the compiler optimizes your code, any code written in a high level language is going to be slower than a single function or procedure call for that high level language. Something like the HSEROUT function is probably written in assembly. And as Darrel points out, there are other things HSEROUT is doing that your replacement code does not.

[Bruce]

Something like the HSEROUT function is probably written in assembly

Every single line of code in the PBP library is in assembly.

any code written in a high level language is going to be slower than a single function or procedure call for that high level language

OK. I'm a little slow. Could you explain this statement in laymans terms..;o}

[falingtrea]

Basically, what I mean is if you write code in BASIC to perform a function it will generate more assembly code than the same function written in assembly. That is because typically there is overhead code generated by the BASIC routines that you can avoid when you write directly in assembly.

So your example of controlling the UART with BASIC code will be more inefficient that the HSEROUT call because of all those extra assembly code lines that the BASIC procedures create.

[shawn]

Thanks for the answers guys

Shawn