#if (OS_EVENT_EN) && (OS_MAX_EVENTS > 0u)typedef struct os_event{INT8U    OSEventType;                    /* Type of event control block (see OS_EVENT_TYPE_xxxx)    */void    *OSEventPtr;                     /* Pointer to message or queue structure                   */INT16U   OSEventCnt;                     /* Semaphore Count (not used if other EVENT type)          */OS_PRIO  OSEventGrp;                     /* Group corresponding to tasks waiting for event to occur */OS_PRIO  OSEventTbl[OS_EVENT_TBL_SIZE];  /* List of tasks waiting for event to occur                */#if OS_EVENT_NAME_EN > 0uINT8U   *OSEventName;
#endif} OS_EVENT;
#endif

OS_EVENT MyFirstSem;
char * CommonzSoure = "";void Task_1(void *pdata)
{U32 i;#if OS_CRITICAL_METHOD == 3   //关中断的方法为3OS_CPU_SR cpu_sr;
#endifOS_ENTER_CRITICAL();OS_CPU_SysTickInit(100000000/OS_TICKS_PER_SEC);OS_EXIT_CRITICAL();OSStatInit();   //统计任务 优先级最低
       MyFirstSem = *(OSSemCreate(1));//PIT0_Init(50000000);UART4_Init(115200);init_LED();pdata = pdata;                                while(1){CommonzSoure = "TASK1 Using Common source ";for(i=0;CommonzSoure[i];i++)Uart4_SendByte(CommonzSoure[i]);OSTimeDly(1);       }}void Task_2(void *pdata)
{U32 i;pdata = pdata;                                while(1){CommonzSoure = "TASK2 Using Common source ";for(i=0;CommonzSoure[i];i++)Uart4_SendByte(CommonzSoure[i]);  }}

OS_EVENT MyFirstSem;
char * CommonzSoure = "";void Task_1(void *pdata)
{U32 i;U8 err;#if OS_CRITICAL_METHOD == 3   //关中断的方法为3OS_CPU_SR cpu_sr;
#endifOS_ENTER_CRITICAL();OS_CPU_SysTickInit(100000000/OS_TICKS_PER_SEC);OS_EXIT_CRITICAL();OSStatInit();   //统计任务 优先级最低
       MyFirstSem = *(OSSemCreate(1));//PIT0_Init(50000000);UART4_Init(115200);init_LED();pdata = pdata;                                while(1){OSSemPend(&MyFirstSem,0,&err);CommonzSoure = "TASK1 Using Common source ";for(i=0;CommonzSoure[i];i++)Uart4_SendByte(CommonzSoure[i]);OSSemPost(&MyFirstSem);OSTimeDly(1);       }}void Task_2(void *pdata)
{U32 i;U8 err;    pdata = pdata;                                while(1){OSSemPend(&MyFirstSem,0,&err); CommonzSoure = "TASK2 Using Common source ";for(i=0;CommonzSoure[i];i++)Uart4_SendByte(CommonzSoure[i]); OSSemPost(&MyFirstSem);}}