LOS_TaskCreate

Task

Create a task.

Description:: This API is used to create a task. If the priority of the task created after system initialized is higher than the current task and task scheduling is not locked, it is scheduled for running. If not, the created task is added to the queue of ready tasks.

注意:

During task creation, the task control block and task stack of the task that is previously automatically deleted are deallocated.
The task name is a pointer and is not allocated memory.
If the size of the task stack of the task to be created is 0, configure LOSCFG_BASE_CORE_TSK_DEFAULT_STACK_SIZE to specify the default task stack size.
The task stack size must be aligned on the boundary of 8 bytes. The size is determined by whether it is big enough to avoid task stack overflow.
Less parameter value indicates higher task priority.
The task name cannot be null.
The pointer to the task executing function cannot be null.
The two parameters of this interface is pointer, it should be a correct value, otherwise, the system may be abnormal.

参数:

	参数名称	描述
	puwTaskID	[OUT] Type UINT32 * Task ID.
	pstInitParam	[IN] Type TSK_INIT_PARAM_S * Parameter for task creation.

返回值:

	返回值	描述
	LOS_ERRNO_TSK_ID_INVALID	Invalid Task ID, param puwTaskID is NULL.
	LOS_ERRNO_TSK_PTR_NULL	Param pstInitParam is NULL.
	LOS_ERRNO_TSK_NAME_EMPTY	The task name is NULL.
	LOS_ERRNO_TSK_ENTRY_NULL	The task entrance is NULL.
	LOS_ERRNO_TSK_PRIOR_ERROR	Incorrect task priority.
	LOS_ERRNO_TSK_STKSZ_TOO_LARGE	The task stack size is too large.
	LOS_ERRNO_TSK_STKSZ_TOO_SMALL	The task stack size is too small.
	LOS_ERRNO_TSK_TCB_UNAVAILABLE	No free task control block is available.
	LOS_ERRNO_TSK_NO_MEMORY	Insufficient memory for task creation.
	LOS_OK	The task is successfully created.

Dependency: