timer.c

GPS 与 GSM协议C语言实现源码,为了大家能够更好的理解神秘的导航和手机通讯。

#include "iom128v.h"
#include "cal.h"
#include "datatype.h"
 void timer0_init(void)
{
 TIMSK = 0x00;
 TCCR0 = 0x00; //stop
 ASSR  = 0x00; //set async mode
 TCNT0 = 0x7F; //set count
 OCR0  = 0x00;
 //
} 
void start_timer(void)
{
 TIMSK = 0x01 ;
 SREG  = 0x80  ; 
 TCCR0 = 0x01 ;
 
}