here my init code in hi-tech c
if you want tx interrupt de-comment le line change the baud rate and and crystal
to match your setup
in hytertem uncheck hardware flow control, xon-xoff
regards
S.
#include <pic18.h>
#include <stdio.h>
#define BAUD 9600 #define FOSC 2000000L
#define NINE 0 /* Use 9bit communication? FALSEit */
#define DIVIDER ((int)(FOSC/(16UL * BAUD) -1))
#define HIGH_SPEED 1
#if NINE == 1
#define NINE_BITS 0x40
#else
#define NINE_BITS 0
#endif
#if HIGH_SPEED == 1
#define SPEED 0x4
#else
#define SPEED 0
#endif
/* Serial initialization */
void init_comms(void)
{
SPBRG 9; //DIVIDER; //TXIE=1;	//enable tx/rx interrupt
RCIE=1; TXSTA = (SPEED|NINE_BITS|0x20);
RCSTA = (NINE_BITS|0x90);
}
void putch(unsigned char byte) {
/* output one byte */
while(!TXIF)	/* set when register is empty */
continue;
TXREG = byte;
}
unsigned char getch()
{
/* retrieve one byte */
while(!RCIF)	/* set when register is not empty */
continue;
return RCREG;	}
unsigned char getche(void)
{
unsigned char c;
putch(c = getch());
return c;
}
void print(const uchar *string)
{
while(*string!='\0')
{
putch(*string);
string++;
}
putch(0x0d);// cr
}
--- In p...@yahoogroups.com, "Travis L. F Bailey" <tbailey@l...> wrote:

I am trying to get the serial to work on my pic18f452 chip. I can

print 

data to hyperterm from pic with no problem. But, I can not figure

out 

how to get data from hypterterm to the pic.
I am able to print, here is a sample of my output:
First 2 RCSTA 144 TXSTA 160 First 3 RCSTA 144 TXSTA 160 First 4 

RCSTA 

144 TXSTA
160 First 5 RCSTA 144 TXSTA 160 First 6 RCSTA 144 TXSTA 160 First 

7 

RCSTA 144 T
XSTA 160 First 8 RCSTA 144 TXSTA 160 First 9 RCSTA 144 TXSTA 160 

First 

10 RCSTA
144 TXSTA 160
I think everything is set properly, but I am not sure.
Does anyone see any obvoius errors in my code?
Thanks,
Travis
MPLAB C18 Code I am using:
#include <p18cxxx.h> /* for TRISB and PORTB declarations */
#include <delays.h>
#include <usart.h>
#include <stdlib.h>
int shorttime;
int longtime;
int counter;
char data;
char counter_data[20];
char rcsta_data[20];
char txsta_data[20];
void main (void)
{
TRISB = 0; /* configure PORTB for output */
LATB = 0;
shorttime = 5;
longtime = 100;
counter = 1;
OpenUSART (USART_TX_INT_OFF & USART_RX_INT_OFF &
USART_ASYNCH_MODE & USART_EIGHT_BIT &
USART_CONT_RX & USART_BRGH_LOW, 25);
while (1)
{
PORTB = 3; /* display value of 'counter' on the LEDs */
Delay10KTCYx(longtime); /* delay 1000 */
while (counter < 10)
{
counter++;
itoa(counter,&counter_data);
putrsUSART (" First " );
putsUSART ( &counter_data );
itoa(RCSTA,&rcsta_data);
putrsUSART (" RCSTA " );
putsUSART ( &rcsta_data );
itoa(TXSTA,&txsta_data);
putrsUSART (" TXSTA " );
putsUSART ( &txsta_data );
PORTB = 7;
Delay10KTCYx(longtime);
PORTB = 5;
Delay10KTCYx(longtime);
}
PORTB = 1;
while (1) {
/* Problem is here somewhere.... */
while(!DataRdyUSART())
{
/*
Blink LED's until input is recieved
Stays in here forever......
*/
PORTB = 128;
Delay10KTCYx(longtime);
PORTB = 0;
Delay10KTCYx(longtime);
}
data = ReadUSART();
putrsUSART ( " Input: " );
WriteUSART ( data );
if (data=='d')
{
PORTB = 5;
Delay10KTCYx(longtime);
}
if (data=='s')
{
PORTB = 31;
Delay10KTCYx(longtime);
}
if (data=='q')
break;
}
}
}

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