main.c

magicarm270实验箱的基础实验

/****************************************Copyright (c)**************************************************
**                               Guangzhou ZHIYUAN electronics Co.,LTD.
**                                     
**                                 http://www.zyinside.com
**
**--------------File Info-------------------------------------------------------------------------------
** File Name: main.c
** Last modified Date: 2007-01-24
** Last Version: v1.0
** Description: MagicARM270实验箱的基础实验---PS/2实验
**              不断地读取PS/2输出的键值，然后通过串口发送到PC机显示。
**------------------------------------------------------------------------------------------------------
** Created By: 黄绍斌
** Created date: 2007-01-24
** Version: v1.0
** Descriptions:
**
**------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
** Version:
** Description:
**
********************************************************************************************************/
#include  "config.h"


// 定义缓冲区
char dispbuf[256];


/*********************************************************************************************************
** Function name: DelayNS
** Descriptions: 长软件延时。
**              延时时间与系统时钟有关。
** Input: dly	延时参数，值越大，延时越久
** Output: 无
** Created by: 黄绍斌
** Created Date: 2005-12-31 
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date: 
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
void  DelayNS(uint32  dly)
{  
	uint32  i;

   	for(; dly>0; dly--) 
       for(i=0; i<50000; i++);
}



/*********************************************************************************************************
** Function name: main
** Descriptions: 不断地读取PS/2输出的键值，然后通过串口发送到PC机显示。           
** Input: 无
** Output: 系统返回值0
** Created by: 黄绍斌
** Created Date: 2005-12-31 
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date: 
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
int  main(void)
{	
	// 控制口线初始化 (CLK和DAT均为输入模式)
	GAFR2_U = GAFR2_U & (~ (0x03<<18) );	// GP89
	GAFR3_L = GAFR3_L & (~ (0x03<<0) );		// GP96	
	GPDR2 = GPDR2 & (~KEY_DAT);
	GPDR3 = GPDR3 & (~KEY_CLK);

	// 初始化串口
	UART_Init(115200);
	
	// 读取键值并向串口发送
	while(1)
    {   
        sprintf(dispbuf, "PCKEY = 0x%x \n", My_GetCh());
        UART_SendStr(dispbuf);
    }
    	
   	return(0);
}

/*********************************************************************************************************
**                            End Of File
********************************************************************************************************/