ad.c

ARM7下用图形用户界面实现LED,KEY,MOTOR,AD功能

#include "ad.h"
#include "temp.h"
#include "nano-X.h"
extern GR_GC_ID gc;
extern void doad(float *a,GR_GC_ID gc);

void init_ADdevice(void)
{
	ADCPSR=20;
	ADCCON=ADCCON_SLEEP;
}

void* GetADresult(void *data)
{
	int i,j;
    float d; 
   	while(1)
    {
	pwm(NULL);	
        for(i=0; i<=3; i++)
        {
        	ADCCON=(i<<2)|ADCCON_ENABLE_START;
        	for(j=0;j<100;j++);
        	while(!( (ADCCON) & ADCCON_FLAG));
    		d=((float)ADCDAT*2.5)/1024.0;
    		addata[(i+3)%4]=d;
		 doad(addata,gc);
    		for(j=0;j<600000;j++);
		
    	}
    }
    return NULL;
}