ad.c

数组方式用CCS显示AD采集信号的例程

#include "DSP28_Device.h"

float	a1[16];
unsigned int a2=0;
float	adclo=0.0;
float shuchu[200];//放在.ebss中,全局变量
// Prototype statements for functions found within this file.
interrupt void ad(void);
//interrupt void eva_time1(void);

void main(void)
{

	
	InitSysCtrl();

	DINT;
	IER = 0x0000;
	IFR = 0x0000;

	InitPieCtrl();
	InitPieVectTable();	
	InitGpio();
	
	EALLOW;	// This is needed to write to EALLOW protected registers
	PieVectTable.ADCINT=&ad;
	EDIS;   // This is needed to disable write to EALLOW protected registers
    
    InitAdc();
	
    IER |= M_INT1;//使能CPUINT1	
	EINT;   // Enable Global interrupt INTM
	ERTM;	// Enable Global realtime interrupt DBGM
	EvaRegs.GPTCONA.all=0;
	EvaRegs.T1CMPR=0x0000;//设置T1比较值 
    EvaRegs.T1PR=0x0100;    
    EvaRegs.GPTCONA.bit.T1TOADC=2;
    EvaRegs.T1CON.all=0x1042;//X/4
	for(;;)
	{
	    KickDog();
	}
} 	

interrupt void ad(void)
{
	IFR=0x0000;
	PieCtrl.PIEACK.all=0xffff;//响应中断
	a2++;
	if(a2>=200)
	{
	   a2=200;
	}
	shuchu[a2-1]=((float)AdcRegs.RESULT0)*3.0/65520.0+adclo;
	GpioDataRegs.GPADAT.all=0xffff;
	GpioDataRegs.GPADAT.all=0x0000;
	AdcRegs.ADC_ST_FLAG.bit.INT_SEQ1_CLR=1;//清除INT_SEQ1位
	AdcRegs.ADCTRL2.bit.SOC_SEQ1=0;//从当前停止的位置启动SEQ1
	AdcRegs.ADCTRL2.bit.RST_SEQ1=1;
}  

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// No more.
//===========================================================================