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I am trying to learn how to use the C18  V3 . 36  compiler to program an 18=
F4550. Using PicKit3 and MPLab  V8 . 46 .
I am trying to use the hardware USART functions to load a single character =
into the PIC and echo it back, repeating the character 30 times in a WHILE =
loop.
The program is shown below. I am trying to declare constant hwi =3D 30. I h=
ave tried many ways of locating this, none are successful.
With the statement located at POSITION A, it does the WHILE loop once; to r=
epeat requires reloading the program. I am expecting the program to repeat =
each time I push RUN; it doesn't.
With the statement located at POSITION B, I get an  OUT OF RANGE  indicatio=
n on the Watch window. A count of 30 was expected. Repeat requires reloadin=
g the program.
With the statement located at POSITION C, it will not compile and I get a s=
yntax error that has not responded to typing error checks, research, and ch=
ecks of the preceding line of code.
The MPLAB supplied usart . c routine complies and runs correctly.
I am doing something stupid that I cannot see. Can someone help me?

My first thought regarding asking for help was the Microchip C18 forum. How=
ever, I can not post this to that forum as I keep getting a message that te=
lls me I am using
"potentially harmful characters" A query to the forum yielded some suggesti=
ons but no matter how I parse the post it fails.

/**********************************************************************
/*This program loads an ascii "W" character into the PIC and repeats it 30 =
times. */
/*uses A CHARACTER*/
/* ADDITIONAL NOTES:
/* Code uses the Peripheral support library available with MCC18 Compiler
/* Code Tested on:
/* Olimex demo board with 18F4550 processor
/* The microcontroller uses an External Crystal (20 MHz).
/*
/* Uses TX pin for transmission and RX pin for reception.
/* Baud rate of 9600 is configured for 20MHz oscillator frequency
//**********************************************************************/

#define USE_OR_MASKS
#include <p18f4550.h>
#include <usart.h>
#include <delays.h>
//-------------------------------Configuration setting --------------------=
--------------------------

#pragma config FOSC=3D HS, PLLDIV =3D 5, FCMEN=3DON, WDT=3DOFF, IESO=3DOFF,=
 XINST=3DOFF, LVP=3DOFF


char Txdata =3D 'W';
int hwi=3D30;     //POSITION A    Loads OK, counts down and stops at 0 in l=
ocation 06B. Must //reload program to start again.

#define BAUD_RATE_GEN 31      // Fosc =3D 20 MHz, Baud Rate =3D 9600 bps

void main(void)
{

//int hwi=3D30;    //POSITION B "Out of Scope" value shows on Watch window;=
 counts loops 30 //times and stops at 0 at address 201.Must reload program =
to start again.

    OpenUSART(USART_TX_INT_OFF | USART_RX_INT_OFF | USART_ASYNCH_MODE | USA=
RT_EIGHT_BIT | USART_CONT_RX | USART_BRGH_LOW, BAUD_RATE_GEN);
    baudUSART(BAUD_8_BIT_RATE | BAUD_AUTO_OFF);


//int hwi =3D 30;         //POSITION C  Syntax Error that responds to nothi=
ng I change (yet)

while(hwi>0)

{
        WriteUSART(Txdata);     // transmit the character
        Delay10KTCYx (0);               //Delay about half a second
        hwi--;
 }

CloseUSART();
while (1);                                      // end of program

}




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