// Usart test program
// Jurgen Strydom 2007 09 05
// www.flatspike.com

#include <p18f1220.h>
#include <usart.h>
#include <delays.h>

#pragma config WDT = OFF, OSC = INTIO2, LVP = OFF, MCLRE = OFF

void main (void);

//----------------------------------------------------------------------------

void main (void)
{
  int k,h,i,j;
  h = 0;
  k = 0;
  i = 0;
  j = 0;
// OSC settings
  OSCCONbits.IRCF2 = 1; //Set osc to be 8 MHZ
  OSCCONbits.IRCF1 = 1;	//OSCCON<2:0> = 111;
  OSCCONbits.IRCF0 = 1;	//
// USART sttuff
  TRISB = 0b01010011; 	//Tris Settings
  RCSTAbits.SPEN = 1;	// Usart bit
  ADCON1bits.PCFG6 = 1;	//Configure as digital port
  ADCON1bits.PCFG5 = 1; //Configure as digital port
  ADCON1bits.PCFG4 = 1; //Configure as digital port
  OpenUSART( USART_TX_INT_OFF &
			 USART_RX_INT_OFF &
			 USART_ASYNCH_MODE &
			 USART_EIGHT_BIT &
			 USART_CONT_RX &
			 USART_BRGH_HIGH
			, 25);
  PORTB = 0;			//Clear PORTB
  TRISA = 0;
  PORTA = 0;
  i = 1;
  while (1){
	while (DataRdyUSART() == 1) // Reading data with RS232
	{
	h = ReadUSART();
    	if (h == 27) {
			if (i == 0) { 
				i = 1;
				PORTAbits.RA0 = 1;			
			} else {
				i = 0;
				PORTAbits.RA0 = 0;
			} 
			k = 0;
		} else {
			WriteUSART(h);
		}
		h = 0;
	}
	if ((i == 1) & (BusyUSART() == 0) ) {
		WriteUSART(k);
		k++;
		if (j == 1) { j = 0;} 
		else {j = 1; }
		if (k >= 255) {k = 0;}
	}	else if (i == 0) {
		if (j == 1) { j = 0;} 
		else {j = 1; }
	}
	PORTAbits.RA2 = j;
  }
}