dac7724_test.c

用于DSP的数字信号到模拟信号的转换的原程序

#include <stdlib.h>
#include "DSP28_Device.h"
#define _const_length 0x400
#define _econst_length 0x400

void main(void)
{

	/*初始化系统*/
	InitSysCtrl();

	/*关中断*/
	DINT;
	IER = 0x0000;
	IFR = 0x0000;

	/*初始化PIE*/
	InitPieCtrl();

	/*初始化PIE中断矢量表*/
	InitPieVectTable();	
	
    PieCtrl.PIEIER1.bit.INTx7=1;
    
//	EALLOW;	// This is needed to write to EALLOW protected registers
//	PieVectTable.TINT2 = &ISRTimer2;
//	EDIS;   // This is needed to disable write to EALLOW protected registers
    
    	/*设置CPU时钟*/
	ConfigCpuTimer(&CpuTimer0, 150, 25);	// 150MHz CPU Freq, 25 uSeconds Period (in uSeconds)
 	StartCpuTimer0();
 	
 		/* 设置DAC811DA通道*/
	da_setup(0,0,41,2000);   //0：正弦波						
	da_setup(1,1,41,2000);   //1: 方波    
	da_setup(2,2,41,2000);   //2：三角波  J9 顺序（2，3，0，1