main.c

基于ARM7 LPC214x的DAC实验例子程序

/****************************************Copyright (c)**************************************************
**                               Guangzou ZLG-MCU Development Co.,LTD.
**                                      graduate school
**                                 http://www.zlgmcu.com
**
**--------------File Info-------------------------------------------------------------------------------
** File name:			main.c
** Last modified Date:  2004-09-16
** Last Version:		1.0
** Descriptions:		The main() function example template
**
**------------------------------------------------------------------------------------------------------
** Created by:			Chenmingji
** Created date:		2004-09-16
** Version:				1.0
** Descriptions:		The original version
**
**------------------------------------------------------------------------------------------------------
** Modified by:			Chenxibing
** Modified date:		2005-09-21
** Version:
** Descriptions:		D/A实验
**
********************************************************************************************************/
#include 	"config.h"
#define		VREF	(3300*3/4)
#define		V1V		1000*1024/VREF
#define		V2V		2000*1024/VREF

int main (void)
{
	int32 j;
	
	PINSEL1 = (PINSEL1&(~(0x03<<18))) | (0x02<<18);	// P0.25连接Aout
	
	DACR = V1V << 6;
	for (j=0; j<0x7FFFF; j++);		// 等待D/A转换完成

	
    return 0;
}
/*********************************************************************************************************
**                            End Of File
********************************************************************************************************/