📄 main.c
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/****************************************Copyright (c)**************************************************
** Guangzhou ZHIYUAN Electronics Co.,LTD.
** graduate school
** http://www.zyinside.com
**
**--------------File Info-------------------------------------------------------------------------------
** File name: main.c
** Last modified Date: 2006-07-08
** Last Version: 1.0
** Descriptions: DeviceARM2410A的基础实验---GPIO输出控制实验。
** 使用GPIO控制LED1～LED8及蜂鸣器，先蜂鸣器响一声，LED灯全部闪烁5次，然后控制流水灯显示。
**
**------------------------------------------------------------------------------------------------------
** Created by: Chenmingji
** Created date: 2004-09-16
** Version: 1.0
** Descriptions: The original version
**
**------------------------------------------------------------------------------------------------------
** Modified by: 黄绍斌
** Modified date: 2006-07-08
** Version: 1.0
** Descriptions:
**
********************************************************************************************************/
#include "config.h"
// 定义LED控制口 (输出低电平时点亮LED)
#define LED1_CON (1<<1) /* GPG1口 */
#define LED2_CON (1<<3) /* GPG3口 */
#define LED3_CON (1<<5) /* GPG5口 */
#define LED4_CON (1<<6) /* GPG6口 */
#define LED5_CON (1<<7) /* GPG7口 */
#define LED6_CON (1<<1) /* GPB1口 */
#define LED7_CON (1<<2) /* GPB2口 */
#define LED8_CON (1<<3) /* GPB3口 */
// 定义蜂鸣器控制口
#define BEEP (1<<10) /* GPH10口 */
#define BEEP_MASK (~BEEP)
#define KEY_CON (1<<4) /* GPF4口 */
// 定义KEY1的键值
unsigned int key_count = 0;//KEY1的键值
unsigned int key_pressed = 1;//控制程序是否运行 0:不能运行 1:能运行
/*********************************************************************************************************
** 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: RunBeep
** Descriptions: 控制蜂鸣器Be一声音。
** Input: 无
** Output: 无
** Created by: 黄绍斌
** Created Date: 2006-07-08
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
void RunBeep(void)
{
rGPHDAT = rGPHDAT & BEEP_MASK; // BEEP = 0
DelayNS(5);
rGPHDAT = rGPHDAT | BEEP; // BEEP = 1
DelayNS(5);
}
/*********************************************************************************************************
** Function name: LED_DispAllOn
** Descriptions: 控制LED1～LED8全部点亮。
** Input: 无
** Output: 无
** Created by: 黄绍斌
** Created Date: 2006-07-08
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
void LED_DispAllOn(void)
{
rGPGDAT = rGPGDAT & (~(0x000000EA)); // GPG1、GPG3、GPG5、GPG6、GPG7均输出0
rGPBDAT = rGPBDAT & (~(0x0000000E)); // GPB1、GPB2、GPB3均输出0
}
/*********************************************************************************************************
** Function name: LED_DispAllOff
** Descriptions: 控制LED1～LED8全部熄灭。
** Input: 无
** Output: 无
** Created by: 黄绍斌
** Created Date: 2006-07-08
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
void LED_DispAllOff(void)
{
rGPGDAT = rGPGDAT | 0x000000EA; // GPG1、GPG3、GPG5、GPG6、GPG7均输出1
rGPBDAT = rGPBDAT | 0x0000000E; // GPB1、GPB2、GPB3均输出1
}
/*********************************************************************************************************
** Function name: LED_DispNum
** Descriptions: 控制LED1～LED8显示指定16进制数值。LED8为最高位，LED1为最低为，点亮表示该位为1。
** Input: dat 显示数值(低8位有效)
** Output: 无
** Created by: 黄绍斌
** Created Date: 2006-07-08
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
void LED_DispNum(uint32 dat1,uint32 dat2)
{
dat1 = dat1 & 0x000000FF; // 参数过滤
dat2 = dat2 & 0x000000FF; // 参数过滤
if(dat1 & 0x80 || dat2 & 0x80) rGPBDAT = rGPBDAT & (~LED8_CON);
else rGPBDAT = rGPBDAT | LED8_CON;
if(dat1 & 0x40 || dat2 & 0x40) rGPBDAT = rGPBDAT & (~LED7_CON);
else rGPBDAT = rGPBDAT | LED7_CON;
if(dat1 & 0x20 || dat2 & 0x20) rGPBDAT = rGPBDAT & (~LED6_CON);
else rGPBDAT = rGPBDAT | LED6_CON;
if(dat1 & 0x10 || dat2 & 0x10) rGPGDAT = rGPGDAT & (~LED5_CON);
else rGPGDAT = rGPGDAT | LED5_CON;
if(dat1 & 0x08 || dat2 & 0x08) rGPGDAT = rGPGDAT & (~LED4_CON);
else rGPGDAT = rGPGDAT | LED4_CON;
if(dat1 & 0x04 || dat2 & 0x04) rGPGDAT = rGPGDAT & (~LED3_CON);
else rGPGDAT = rGPGDAT | LED3_CON;
if(dat1 & 0x02 || dat2 & 0x02) rGPGDAT = rGPGDAT & (~LED2_CON);
else rGPGDAT = rGPGDAT | LED2_CON;
if(dat1 & 0x01 || dat2 & 0x01) rGPGDAT = rGPGDAT & (~LED1_CON);
else rGPGDAT = rGPGDAT | LED1_CON;
}
// 定义流水灯控制数据
const uint8 LED_DISP[] =
{ 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80,
0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01
};
//定义IRQ中断服务函数
void IRQ_Eint4(void)
{
int i;
rGPFCON=rGPFCON&(~(0x03<<8));
for(i=0;i<10000;i++);//延时消抖
if(rGPFDAT&KEY_CON)
{
rGPFCON = rGPFCON|(0x02<<8);
rEINTPEND = (1<<4);
rSRCPND = (1<<4);
rINTPND = rINTPND;
return;
}
rGPFCON = rGPFCON|(0x02<<8);
key_count++;
switch(key_count)
{
case 1:
key_pressed = 1;
break;
case 2:
key_count = 0;
LED_DispAllOff();
key_pressed = 0;
break;
}
rEINTPEND = (1<<4);
rSRCPND = (1<<4);
rINTPND = rINTPND;
}
//中断初始化函数
void EINT_init(void)
{
rGPFCON = (rGPFCON&0xFFFFFCFF)|(0x02<<8);
rEXTINT0 = (0x2<<16);
VICVectAddr[4] = (uint32)IRQ_Eint4;
rPRIORITY = 0x00000000;
rINTMOD = 0x00000000;
rINTMSK = ~0x0000010;
rEINTMASK = ~0x0000010;
}
/*********************************************************************************************************
** Function name: main
** Descriptions: 初始化I/O，然后控制LED显示。
** Input: 无
** Output: 系统返回值0
** Created by: 黄绍斌
** Created Date: 2006-07-08
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
int main(void)
{
int i = 0;
// 初始化I/O
rGPBCON = (rGPBCON & (~0x000000FC)) | 0x00000054; // 设置GPB1--GPB3为GPIO输出模式
rGPGCON = (rGPGCON & (~0x0000FCCC)) | 0x00005444; // 设置GPG1、GPG3、GPG5、GPG6和GPG7为GPIO输出模式
rGPHCON = (rGPHCON & (~(0x03<<20))) | (0x01<<20); // 设置GPH10为GPIO输出模式
LED_DispAllOff();
EINT_init();
IRQEnable();
while(1)
{
if( key_pressed == 1 )
{
LED_DispNum(LED_DISP[i],LED_DISP[i+1]);
DelayNS(5);
i++;
if(i == 14)
i = 0;
}
}
return(0);
}
/*********************************************************************************************************
** End Of File
********************************************************************************************************/
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