common.c

来自「atmega8 prt8000 （nrf905)发送示例 iccavr,开发」· C语言 代码 · 共 39 行

#include "common.h"
void delay(BYTE a)
{
    while(a)
    a--;
    asm("nop");
}


void DelayM(BYTE c)
{
    unsigned char a;
	unsigned int b;
    for (a = c; a; a--)
    for (b = 64911; b; b++)
    ;
}


BYTE volatile timerCounter = 0;

void initTimer()
{
 	TCCR0 = 5;  // timer0 prescale 1/1024 (7)

 	 // interrupt on overflow
  	sbi( TIMSK, TOIE0 ) ;
	
  	timerCounter = 0;
}

#pragma interrupt_handler SIG_OVERFLOW0:10


void SIG_OVERFLOW0(void)
{
  	timerCounter++;
}