main.c

使用8880实现DTMF通信及拨号的程序.

//ICC-AVR application builder : 2007-10-27 10:16:42
// Target : M8
// Crystal: 7.3728Mhz

#include <iom8v.h>
#include <macros.h>
#include "8880.h"
#include "serial.h"
#include "main.h"
#include "shell.h"
#include "timer.h"
SysOption sysoption;
void delay(unsigned int x)
{
 for (;x>0;x--);

}
void port_init(void)
{
 PORTB = 0x20;  //00010000
 DDRB  = 0x0F;  //00001111
 PORTC = 0x0F;  //00001111
 DDRC  = 0x2F;  //00100000
 PORTD = 0x0e;  //00000100
 DDRD  = 0x02;  //00000010
}

//call this routine to initialize all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 port_init();
 uart0_init();
 MCUCR = 0x08;
 GICR  = 0x80;
 TIMSK = 0x00; //timer interrupt sources
 timer1_init();
 SEI(); //re-enable interrupts
 //all peripherals are now initialized
}
void main(void)
{
 char buf[20];
  init_devices();
 M8880_Init();
 sysoption.echo=-1;
 sysoption.calling=0;
 sysoption.timer=0;
 sysoption.autoanswer=0;
 while(1)shellin();
}