iar-

来自「IAR_example_EasyARM8962.zip」· 代码 · 共 55 行

/****************************************Copyright (c)*****************************************************
**                               Guangzhou ZHIYUAN electronics Co.,LTD.
**                                     
**                                 http:// www.embedtools.com
**
**--------------File Info----------------------------------------------------------------------------------
** File Name:           RegisterAccess.c
** Last modified Date:  2007.12.20 
** Last Version:        V1.1
** Description:         Stellaris系列单片机寄存器访问
** 
**---------------------------------------------------------------------------------------------------------
** Created By:          kang qinhua
** Created date:        2007.11.9
** Version:             V1.0
** Descriptions:        初始版本
**
**---------------------------------------------------------------------------------------------------------
** Modified by:         Kang qinhua
** Modified date:       2008.01.12
** Version:             V1.1
** Description:
**
**********************************************************************************************************/

#define HWREG(x)			(*((volatile unsigned long *)(x)))
#define HWREGH(x)			(*((volatile unsigned short *)(x)))
#define HWREGB(x)			(*((volatile unsigned char *)(x)))

/**********************************************************************************************************
** Function name:      main
** Descriptions:       主函数
** input parameters:   无
** output parameters:  无
** Returned value:     无   
**********************************************************************************************************/
int main( void )
{
	unsigned long temp32;
	
	HWREG(0x20000000) = 0xAA55AA55;                                      /* 向0x20000000地址写0xAA55AA55 */
	temp32 = HWREG(0x20000000);                                          /* 读0x20000000地址内容         */
	if( temp32 != 0xAA55AA55 ) {                                         /* 比较写入与读出的内容是否一致 */
	    while(1) {
	       ;                                                             /* 写入与读出不一致             */
	    }
	}
	while(1) {
	    ;
	}
}
/*********************************************************************************************************
  END FILE
*********************************************************************************************************/