code.txt

/***********************************************************************************
FILE NAME  	:	main.c
DESCRIPTION :	Empty proejct set up for RSKM16C62P					


Copyright   : 2005 Renesas Technology Europe Ltd.
Copyright   : 2005 Renesas Technology Corporation.
All Rights Reserved

***********************************************************************************/

/***********************************************************************************
Revision History
DD.MM.YYYY OSO-UID Description
21.01.2006 RTA-MGF First Release
***********************************************************************************/

/**********************************************************************************
System Includes
***********************************************************************************/

/**********************************************************************************
User Includes
***********************************************************************************/
#include "sfr62p.h"
/* rskM16C62p_def.h defines some common definitions */
#include "rskM16C62Pdef.h"	
#include "main.h"
#include "lcd.h"
#include "stdlib.h"

#pragma	INTERRUPT timer_a0
#pragma INTERRUPT sw1
#pragma INTERRUPT sw2
#pragma INTERRUPT sw3

//Global variables
//***********************************************************************************/
int toggle = 5;
int i;
int ball_pos = 1;
int count = 1;
int direction = 0; // 0 - to right; 1 - to left
int sw1_pos = 0; // 0 - up ; 1 - down
int sw2_pos = 0; // 0 - up ; 1 - down
char str_line1[8];
char str_line2[8];
char ball = 'o';
long int delay_val = 200000;

//User Program Code
//***********************************************************************************/
void update_display(void)
{
	if(sw2_pos == 0)
	{
		str_line1[0] = '|';
		str_line2[0] = ' ';
	} else 
	{
		str_line1[0] = ' ';
		str_line2[0] = '|';
	} 
	
	for(i = 1; i < 7; i++)
	{
		if(i == ball_pos) str_line1[i] = ball;
		else str_line1[i] = ' ';
		
		str_line2[i] = ' ';
	}
	
	

	if(sw1_pos == 0) 
	{
		str_line1[7] = '|';
		str_line2[7] = ' ';
	} else
	{
		str_line1[7] = ' ';
		str_line2[7] = '|';
	} 

	DisplayString(LCD_LINE1, str_line1);
	DisplayString(LCD_LINE2, str_line2);
}



void timer_a0(void) 
{
	update_display();
	
	if(++count == 100)
	{
		count = 1;
		if(direction == 0) 
		{
			ball_pos++;
			if(ball_pos == 6) direction = 1;
		}
		else 
		{
			ball_pos--;
			if(ball_pos == 1) direction = 0;
		}
	}

	
}

void delay(void) {
	long int j;
	for(j = 0; j < delay_val; j++) {}
}

void delay_to_bounce(void) {
	long int j;
	for(j = 0; j < 200000; j++) {}
}

void rotate_left(void)
{// this is only for the part1
	int i;
	for( i = 0; i < 4; ++i)
	{
		if (toggle == 0) toggle = 1;
		p4 |= 0x0F;

		p4 &= ~( 1 << i );
	delay();
	}
	
	
	delay_to_bounce();
	if (toggle == 1)
	{
		p4_0 = 0;
		p4_1 = 0;
		p4_2 = 0;
		p4_3 = 0;
		toggle = 5;
	}
}

void rotate_right(void)
{// this is only for the part1

	for(i = 3; i >= 0; --i)
	{
		if (toggle == 1) toggle = 0;
		p4 |= 0x0F;

		p4 &= ~( 1 << i );
	delay();
	}
	delay_to_bounce();
	if (toggle == 0)
	{
		p4_0 = 0;
		p4_1 = 0;
		p4_2 = 0;
		p4_3 = 0;
		toggle = 5;
	}
}
void sw1(void)
{
	toggle = 1;
	if(++sw1_pos == 2) sw1_pos = 0;
}


void sw2 (void)
{	
	toggle = 0;
	if(++sw2_pos == 2) sw2_pos = 0;
}


void sw3(void) 
{
	delay_val -= 10000;
	if (delay_val <= 0) delay_val = 200000;
}


void part1(void) {
	if (toggle == 5) return;
	
	if (toggle)
		rotate_left();
	else 
		rotate_right();
}

void part2(void) {
	InitialiseDisplay();
	
	asm ( "FSET I" ); 		/* enable interrupts */
	ta0mr = 0b01000000;		/* f8 = 3MHz */
	ta0   = 29999; 			/* 10 * 10^(-3) * 3 * 10^(6) -1 meaning 10ms @3MHz */
	ta0ic = 0x04;			/* interrupt priority level 1 (first non-zero lowest lvl) */
	ta0s = 1;
	
	int0ic = 0x01;
	int1ic = 0x01;
	int2ic = 0x01;

}
void main(void)				
{

	part2();
	
	while(1) {
		part1();
	}
}