/**********************************************
*		File: TheStatus.c
*	  Description: MCU Status report with LEDs
*	  Created Date:  2007-09-12
*   Last Modified: 2007-09-12
*   Author: Jeffrey - Schicksal@126.com
*   Notes: None
**********************************************/

#include <REGX51.h>
#define LED_FLASH_T 10000;

void LEDs_Move();
void LEDs_Error();

/**********************************************
*		Function: delay(unsigned int t)
*	  Input Variables: t
*   Return Variables: None
*   Usage: Common Delay Routine, t as the delay time ticks
**********************************************/
void delay(unsigned int t)
{
		for(;t>0;t--);		// 延時循環
}

#ifndef true
	#define true 1
#endif

/**********************************************
*		Function: main()
*	  Input Variables: None
*   Return Variables: None
*   Usage: Program Entry
*********************************************/
void main()
{
		unsigned char System_Status;		
		while(1)
		{
				// 程序主任務區
				// ............
				// 程序主任務區
				if(System_Status == true)			// 當系統處于正常狀態
				{
						LEDs_Move();							// 跑馬燈指示系統正常
				}
				else													// 當系統發生錯誤
				{
						LEDs_Error();							// 跑馬燈指示錯誤
				}
				
		}
}

/**********************************************
*		Function: LEDs_Move
*	  Input Variables: None
*   Return Variables: None
*   Usage: System Normal Status Report
*********************************************/
void LEDs_Move()
{
	 	static unsigned char LEDs = 0x55;		// 靜態變量用于存儲LEDs發光狀態
	 	P0 = LEDs;						// LED間隔亮滅并移位
		delay(LED_FLASH_T);		// 延時
		LEDs = ~LEDs;					// 狀態改變
}

/**********************************************
*		Function: LEDs_Error
*	  Input Variables: None
*   Return Variables: None
*   Usage: System Error Status Report
*********************************************/
void LEDs_Error()
{
	 	static unsigned char LEDs = 0x00;   // 靜態變量用于存儲LEDs發光狀態
	 	P0 = LEDs;						// LED警告報警亮滅
		delay(LED_FLASH_T);		// 延時
		LEDs = ~LEDs;					// 狀態改變
}