aptask.c

加速度采集器。基于ATMega16L.AVRSTUIDIO4

#include "ap89021.h"
#include "apTask.h"

#include "ap89021.h"
#include <iom16v.h>
#include <macros.h>
#include <avr/io.h>
#include <avr/pgmspace.h>


//interface
extern unsigned short currentImpact;
extern unsigned short impactCounter;
extern unsigned char currentImpactUpdated;


//Thresholds
#include "defSound.h"


void apTask(void)
{
	unsigned char sndNum,i;
 	 unsigned char apImpactUpdated = 0;
	 unsigned short apCurrentImpact;


	if(apIsBusy())
		return;

 	 //read interface!!!
	 CLI();
	 if(currentImpactUpdated&0x02)
	 {
	  currentImpactUpdated &= ~0x02;
	  apImpactUpdated = 1;
	  apCurrentImpact = currentImpact;
	 }
	 SEI();
	 
	 //Play sound
	 if (!apImpactUpdated)
	 	return;
	
	sndNum = 0xFF;	//No Sound
	for(i=0;i<NumThresholds;i++)
	{
		if(apCurrentImpact>=thresholdSetting[i])
			sndNum = i;
		else 
			break;
	}
	if(sndNum<NumThresholds)
		apPlay(sndNum);

}