ok so would you set the code inside ifdef in a while(1) wait(1) or would the function main itself take care of it, or does it matter where you put it? like for me the first thing I do is use a ifdef to wait on a connection, after that I want to do another ifdef and do what you are doing. The function main would take care of going back through it time and time again or would I have to put everything in a while(1) wait (1)?