Instant Interrupt and USART

[sirvo]

If you don't have any data waiting, it's a constant conversation between the program and the USART.
USART: Hey, it's ok to send.
PROGRAM: I have nothing to send.
USART: Hey, it's ok to send.
PROGRAM: I have nothing to send.
USART: Hey, it's ok to send.
PROGRAM: I have nothing to send.
.....

Darrel, I did think that it was interrupting all the time but i was not sure. Thanks for the help! I got it working now!

By the way, i'm still laughing about the conversation......

Thanks!