adc1.c

很有用的CYGNAL C语言程序,

/*******************************************************************************
**
**	文	件：ADC1.C
**	功	能：ADC1（8位）
**	I /  O：ADC输入AIN0，内部电压基准
********************************************************************************/
#include<c8051f020.h>
void clock(void);
void xbrs(void);
void adcs(void);
void delay(long int);
void yan50m(unsigned char);
void senddata(unsigned char,unsigned char);
void setoff();

void adc0int (void) interrupt 17
{
	unsigned long int d;
	unsigned int c1,c2,c3,d2;
	d2=ADC1;
	d=d2;
	d=d*240;
	d=d/256;
	c3=d/100;
	c2=(d%100)/10;
	c1=d%10;
	c3=c3+0x80;
	senddata(1,c1);
	senddata(2,c2);
	senddata(3,c3);
	ADC1CN&=0xDF;
}

main()
{
	clock();
	xbrs();
	adcs();
	setoff();
	EIE2|=0x08;
	EA=1;
	TMOD=0x10;
	while(1)
	{
	ADC1CN|=0x10;
	yan50m(20);
	}

}
void clock(void)			//clock det
{
	unsigned char e;
	WDTCN=0xde;				//CLOSE WDOG
	WDTCN=0xad;
	OSCXCN=0x67;			//ENABLE EXTERNAL CLK
	delay(10000);
    delay(10000);
	e=!OSCXCN&0x80;
	while(e); 
    OSCICN|=0x08;
}
void xbrs(void)				//XBR set
{
	XBR2=0x40;
	P1MDOUT=0xFF;
}
void adcs(void)				//ADC0 set
{
	AMX1SL=0x00;			//use AIN0 as a input ADC port 
//	AMX1CF=0x00;
	ADC1CN=0x80;
	ADC1CF=0x58;
	REF0CN=0x03;
}