Nevermind... Totally missed that this chip (18F24k22) has 2 USARTs so I=20 needed to use Open1USART instead. On 7/21/2012 10:21 AM, Neil wrote: > Getting an odd problem using the C18 library... I include usart.h and > use OpenUSART( ... , ... ) but get an error telling me I'm calling a > function with no prototype. I know it's finding the header file, as > without it I get errors that all the constants are undefined. Also > tried explicitly adding the header path, but same issue. > > Oddly, I can include the xlcd.h and use the routines in there with no > problem. > > Anyone know why this is happening? > --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .