task.c

AVR单片机C语言程序设计实例精粹

//******************************************************************************
// File Name : Task.c
// Author    : Steaven
// Created   : 2008-06-09
// Modified  : 
// Revision  : V0.0
//******************************************************************************

#include "app.h"

//local function declaration
void Task1_Init(void);
void Task2_Init(void);
void Task3_Init(void);
void Task4_Init(void);
void Task1(void);
void Task2(void);
void Task3(void);
void Task4(void);

//******************************************************************************
// Function    : Task1_Init
// Input       : none
// Output      : none
// Description : Initialization of task1,off LED1
//******************************************************************************
void Task1_Init(void)
{
	LED_OFF(cLED1);
}

//******************************************************************************
// Function    : Task2_Init
// Input       : none
// Output      : none
// Description : Initialization of task2,off LED2
//******************************************************************************
void Task2_Init(void)
{
	LED_OFF(cLED2);
}

//******************************************************************************
// Function    : Task3_Init
// Input       : none
// Output      : none
// Description : Initialization of task3,off LED3
//******************************************************************************
void Task3_Init(void)
{
	LED_OFF(cLED3);
}

//******************************************************************************
// Function    : Task4_Init
// Input       : none
// Output      : none
// Description : Initialization of task4,off LED4
//******************************************************************************
void Task4_Init(void)
{
	LED_OFF(cLED4);
}

//******************************************************************************
// Function    : Task1
// Input       : none
// Output      : none
// Description : Task1 process,Control LED1
//******************************************************************************
void Task1(void)
{
	INT16U wTask_Event;
    static INT8U bKey_Status = cOFF_Status;
    while(1)
	{
		//task switch
		if(OS_Task_Switch(cPrioTask1) == true)
		{
			return;
		}
		//get event
		wTask_Event = OS_Event_Pend(cPrioTask1);
        //event check
        if(wTask_Event == 0)
        {
            return;
        }
		//event parsing : timer event
		if(wTask_Event & (1 << eTask1_Timer))
		{
			if(bKey_Status == cOFF_Status)
			{
				LED_OFF(cLED1);
			}
			else if(bKey_Status == cON_Status)
			{
				LED_ON(cLED1);
			}
			else if(bKey_Status == cTOGGLE_Status)
			{
				LED_TOGGLE(cLED1);
			}
		}
		//event parsing : key event
		if(wTask_Event & (1 << eTask1_Key))
		{
			if(bKey_Status == cOFF_Status)
			{
				bKey_Status = cTOGGLE_Status;
			}
			else if(bKey_Status == cTOGGLE_Status)
			{
				bKey_Status = cOFF_Status;
			}
			else if(bKey_Status == cON_Status)
			{
				bKey_Status = cOFF_Status;
			}
		}
	}
}

//******************************************************************************
// Function    : Task2
// Input       : none
// Output      : none
// Description : Task2 process,Control LED2
//******************************************************************************
void Task2(void)
{
    INT16U wTask_Event;	
    static INT8U bKey_Status = cOFF_Status;
    while(1)
	{
		//task switch
		if(OS_Task_Switch(cPrioTask2) == true)
		{
			return;
		}
		//get event
		wTask_Event = OS_Event_Pend(cPrioTask2);
        if(wTask_Event == 0)
        {
            return;
        }
		//event parsing : timer event
		if(wTask_Event & (1 << eTask2_Timer))
		{
			if(bKey_Status == cOFF_Status)
			{
				LED_OFF(cLED2);
			}
			else if(bKey_Status == cON_Status)
			{
				LED_ON(cLED2);
			}
			else if(bKey_Status == cTOGGLE_Status)
			{
				LED_TOGGLE(cLED2);
			}
		}
		//event parsing : key event
		if(wTask_Event & (1 << eTask2_Key))
		{
			if(bKey_Status == cOFF_Status)
			{
				bKey_Status = cTOGGLE_Status;
			}
			else if(bKey_Status == cTOGGLE_Status)
			{
				bKey_Status = cOFF_Status;
			}
		}
	}
}

//******************************************************************************
// Function    : Task3
// Input       : none
// Output      : none
// Description : Task3 process,Control LED3
//******************************************************************************
void Task3(void)
{
	INT16U wTask_Event;
    static INT8U bKey_Status = cOFF_Status;
    while(1)
	{
		//task switch
		if(OS_Task_Switch(cPrioTask3) == true)
		{
			return;
		}
		//get event
		wTask_Event = OS_Event_Pend(cPrioTask3);
		//event parsing : timer event
		if(wTask_Event & (1 << eTask3_Timer))
		{
			if(bKey_Status == cOFF_Status)
			{
				LED_OFF(cLED3);
			}
			else if(bKey_Status == cON_Status)
			{
				LED_ON(cLED3);
			}
			else if(bKey_Status == cTOGGLE_Status)
			{
				LED_TOGGLE(cLED3);
			}
		}
		//event parsing : key event
		if(wTask_Event & (1 << eTask3_Key))
		{
			if(bKey_Status == cOFF_Status)
			{
				bKey_Status = cTOGGLE_Status;
			}
			else if(bKey_Status == cTOGGLE_Status)
			{
				bKey_Status = cOFF_Status;
			}
		}
	}
}

//******************************************************************************
// Function    : Task4
// Input       : none
// Output      : none
// Description : Task4 process,Control LED4
//******************************************************************************
void Task4(void)
{
	INT16U wTask_Event;
    static INT8U bKey_Status = cOFF_Status;
    while(1)
	{
		//task switch
		if(OS_Task_Switch(cPrioTask4) == true)
		{
			return;
		}
		//get event
		wTask_Event = OS_Event_Pend(cPrioTask4);
		//event check
        if(wTask_Event == 0)
        {
            return;
        }
        //event parsing : timer event
		if(wTask_Event & (1 << eTask4_Timer))
		{
			if(bKey_Status == cOFF_Status)
			{
				LED_OFF(cLED4);
			}
			else if(bKey_Status == cON_Status)
			{
				LED_ON(cLED4);
			}
			else if(bKey_Status == cTOGGLE_Status)
			{
				LED_TOGGLE(cLED4);
			}
		}
		//event parsing : key event
		if(wTask_Event & (1 << eTask4_Key))
		{
			if(bKey_Status == cOFF_Status)
			{
				bKey_Status = cTOGGLE_Status;
			}
			else if(bKey_Status == cTOGGLE_Status)
			{
				bKey_Status = cOFF_Status;
			}
		}
	}
}

//******************************************************************************
// Function    : Task_Start
// Input       : none
// Output      : none
// Description : Standard function format,put all tasks into while(1)
//******************************************************************************
void Task_Start(void)
{
	while(1)
	{
	    Task1();
		Task2();
		Task3();
		Task4();
	}
}

//******************************************************************************
// Function    : Task_Init
// Input       : none
// Output      : none
// Description : Standard function format,put all tasks Initialization here
//******************************************************************************
void Task_Init(void)
{
	Task1_Init();
	Task2_Init();
	Task3_Init();
	Task4_Init();	
}

//===============================END OF FILE==================================//