// Copyright 2006 Yamane Akira
// m48bitInOut
// Target : M48
// Crystal: 4.0000Mhz
// Exaple Program for Bit SET Clear
// Also Include Read Modify Operation
// Programmed by A.Yamane

#include <iom48v.h>
#include <macros.h>

void port_init(void)
{
 PORTB = 0xFF;
 DDRB  = 0x00;
 PORTC = 0x7F; //m103 output only
 DDRC  = 0x07;
 PORTD = 0xFF;
 DDRD  = 0x00;
}

//call this routine to initialize all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 port_init();

 MCUCR = 0x00;
 EICRA = 0x00; //extended ext ints
 EIMSK = 0x00;
 
 TIMSK0 = 0x00; //timer 0 interrupt sources
 TIMSK1 = 0x00; //timer 1 interrupt sources
 TIMSK2 = 0x00; //timer 2 interrupt sources
 
 PCMSK0 = 0x00; //pin change mask 0 
 PCMSK1 = 0x00; //pin change mask 1 
 PCMSK2 = 0x00; //pin change mask 2
 PCICR = 0x00; //pin change enable 
 PRR = 0x00; //power controller
 SEI(); //re-enable interrupts
 //all peripherals are now initialized
}

void Write_Perip(unsigned char WDATA)
   {
    PORTB = WDATA;
	DDRB = 0xFF;
	PORTC &= ~0x04;
	PORTC &= ~0x02;
	PORTC |= 0x06;
	DDRB = 0x00;
   }
 
unsigned char Read_Perip(void)
   {
    unsigned char RDATA;
	DDRB = 0x00;
	PORTC &= ~0x04;
	PORTC &= ~0x01;
	RDATA = PINB;
	PORTC |= 0x05;
	DDRB = 0x00; 
	return RDATA;
   }
//
void main(void)
{
 init_devices();
 //insert your functional code here...
   while(1)
     {
	  //actual program start here
	 }
}