I'm using printf() to talk directly to EUSART1, without going via the 
usart.h library. We decided to avoid this library for now in order to 
keep code as direct and simple as possible.

printf() appears to call code in file 
c:\MCC18\src\pmc_common\USART\_usartpc.asm , which clears SPBRG when 
first run, causing serial timing to fail. However, if I manually re-set 
SPBRG in the watch window, it remains uncleared and serial transmission 
continues happily.

Q1) Any idea why this has to happen, and what could/should be done about it?
Q2) Does anyone have any optimal examples of setting up printf() 
explicitly without using usart.h ?

Many thanks,
Matt

----------------- code follows -------------------------------

#include <p18F8627.h>
#include <stdio.h>
#include <delays.h>
// #include <usart.h>


void main(void)
{

// config usart, 9600 8n1, Fosc=18.432MHz

//     MOVLW    b'01000001'
//    MOVWF    TXSTA1,A
TXSTA1 = 0b01000001 ;

//    MOVLW    b'11000000'
//    MOVWF    RCSTA1,A
RCSTA1 = 0b11000000 ;

//    MOVLW    b'00000000'
//    MOVWF    BAUDCON1,A
BAUDCON1 = 0b00000000 ;

//    CLRF    SPBRGH1,A
SPBRGH1 = 0 ;

//    MOVLW    d'29'
//    MOVWF    SPBRG1,A
SPBRG1 = 29 ;



while(1)
{
printf ("Hello World!\n");
Delay10KTCYx (0);

}


}
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