task.c

基本STC4052写的一个小的OS, 完成了任务调度功能,及堆栈空间切换, 及中断处理

//---------------------------------------------------------------
//      
//       Copyright (c) 2006-2007 E-compass electronic Co.,Ltd.               
//       All Right Reserved.                                     
//                                                               
//       $Author    walnutcy
//       $Email     [e-mail]              
//       $Version   v1.0  
//       $FileName                                       
//       $Since                                            
//       $Log                                                    
//                                                               
//       DESCRIPTION   
//
//		 History:         
//		 <author>          <time>     <version >    <desc> 
//---------------------------------------------------------------

//#include "task.h"
#include "includes.h"




volatile U16 sysTimeTick; // system time tick : 1ms

U8 gLedDelayTime;


void MCUInit() REENTRANT
{    
	PCON &= 0xEF;
    IT1 = 1;
	if (0==IT1)
	{	ISRAdrFun();
	}	
    SRL_Init();
    IR_Init();
//	WDT_CONTR = 0x3C;
    IP  = 0x00;//51;//0:PCA:ADC:S:T1:X1:T0:X0
    IPH = 0x00;//10;
    IE = _INTERRUPT_ALL;
	/////////////////
	TMOD |= 0x01;// timer 0, 16-bit mode 1, 
  	TCON |= 0x05; // TR0 = 0; IT1 = 1;
	TR0 = 1;
	gLedDelayTime = 250;
}


void Task_IR(void) REENTRANT
{
	U8 buf[4];
	UartReq();
	OsShedLOCK();
	UartPrint("task_IR: 01");
	OsShedUnLOCK();
	UartFree();
	while (1)
	{
	    if (IR_GetRevState())
	    {
	        if (IR_GetRevData(buf))
			{ 
				UartReq();
				OsShedLOCK();
			    SRL_SendPack(IR_EVENT,buf,3);
				OsShedUnLOCK();
				UartFree();
	        }
	    }
//		WDT_CONTR = 0x3C;		
		OsWaitMsg();
	}
}

extern IU8 gTaskIoCtrl[35];

void Task_Uart(void)	REENTRANT
{
	U8 buf[10];
    U8 tmp ;
	UartReq();
	OsShedLOCK();
	UartPrint("task_uart: 02");
	OsShedUnLOCK();
	UartFree();
	while (1)
	{
		tmp = 0;
		if (SRL_GetRevStatus()) 
		{
		    SRL_GetRevPack(&tmp,buf);
			if (0x00==tmp)
			{	return;   
			}
			switch (tmp)
			{
			case VERSION_EVENT:  //0x50
				*buf = SOFT_VERSION;
				UartReq();
				OsShedLOCK();
				SRL_SendPack(VERSION_EVENT,buf,1);
				OsShedUnLOCK();
				UartFree();
				break;
			case 0x80:
				if(C_TRUE==OsTaskKill(*buf))
				{
					gLedDelayTime = *(buf+1);
					OsTaskCreate(TASK_IO_CTRL,Task_LED2,(U8)gTaskIoCtrl);
				}
				else
				{
					UartReq();
					OsShedLOCK();
					UartPrint("0123456");
					OsShedUnLOCK();
					UartFree();
				}
				break;
			case 0x81:
				if(C_TRUE==OsTaskKill(*buf))
				{
					OsTaskCreate(TASK_IO_CTRL,Task_LED1,(U8)gTaskIoCtrl);
				}
				else
				{
					UartReq();
					OsShedLOCK();
					UartPrint("0123456");
					OsShedUnLOCK();
					UartFree();
				}
				break;
			case 0x82:
				if(C_TRUE==OsTaskKill(*buf))
				{
					OsTaskCreate(TASK_IO_CTRL,Task_LED3,(U8)gTaskIoCtrl);
				}
				else
				{
					UartReq();
					OsShedLOCK();
					UartPrint("0123456");
					OsShedUnLOCK();
					UartFree();
				}
				break;
	        default:
				UartReq();
				OsShedLOCK();
				UartPrint(buf);
				OsShedUnLOCK();
				UartFree();
	            break;
			}
		}		
		OsWaitMsg();
	}
}

void Task_LED1(void)	REENTRANT
{
	UartReq();
	OsShedUnLOCK();
	UartPrint("task_LED1: 03");
	OsShedUnLOCK();
	UartFree();
	while (1)
	{
		pinLed = ~pinLed;
		OsDelay(LED_DELAY);
	}		
}
void Task_LED2(void)	REENTRANT
{
	UartReq();
	OsShedUnLOCK();
	UartPrint("task_LED2: 03");
	OsShedUnLOCK();
	UartFree();
	while (1)
	{
		pinLed = ~pinLed;
		OsDelay(gLedDelayTime);
	}		
}
BOOL ledFlg;
void Led3TimerProc (void) REENTRANT
{
	KillTimer(Led3TimerProc);
	pinLed = ~pinLed;
	ledFlg = 1;	 
}
void Task_LED3(void)	REENTRANT
{
	UartReq();
	OsShedUnLOCK();
	UartPrint("task_LED3: 03");
	OsShedUnLOCK();
	UartFree();
	pinLed = 1;
	ledFlg = 1;
	while (1)
	{
		if (ledFlg)
		{	
			ledFlg = 0;
			SetTimer(Led3TimerProc,100); //1s
		}
		OsDelay(LED_DELAY);
	}		
}

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