RT-Thread Kernel API 的协作图:

专题
	Thread Management

	Clock and Timer Management

	Kernel Object Management

	Inter-Thread Communication

	Signal

	Memory Management

	Device System

	Runtime Trace and Record

	Other useful kernel service

	Error Code

函数
rt_weak void	rt_interrupt_enter (void)

	RTM_EXPORT (rt_interrupt_enter)

rt_weak void	rt_interrupt_leave (void)

	RTM_EXPORT (rt_interrupt_leave)

rt_weak rt_uint8_t	rt_interrupt_get_nest (void)

	RTM_EXPORT (rt_interrupt_get_nest)

	RTM_EXPORT (rt_hw_interrupt_disable)

	RTM_EXPORT (rt_hw_interrupt_enable)

rt_weak rt_bool_t	rt_hw_interrupt_is_disabled (void)

	RTM_EXPORT (rt_hw_interrupt_is_disabled)

变量
volatile rt_atomic_t	rt_interrupt_nest = 0

详细描述

The Kernel APIs are the core APIs of RT-Thread, which supports the following features:

Multi-thread management
Synchronization mechanisms
Inter-thread communication
Memory management
Asynchronous timer

函数说明

◆ rt_interrupt_enter()

rt_weak void rt_interrupt_enter ( void )

This function will be invoked by BSP, when enter interrupt service routine

注解: Please don't invoke this routine in application

参见: rt_interrupt_leave

在文件 irq.c 第 100 行定义.

{
    rt_atomic_add(&(rt_interrupt_nest), 1);
    RT_OBJECT_HOOK_CALL(rt_interrupt_enter_hook,());
    LOG_D("irq has come..., irq current nest:%d",
          (rt_int32_t)rt_atomic_load(&(rt_interrupt_nest)));
}

引用了 LOG_D, rt_atomic_add, rt_atomic_load, rt_interrupt_nest , 以及 RT_OBJECT_HOOK_CALL.

这是这个函数的调用关系图:

◆ RTM_EXPORT() [1/6]

RTM_EXPORT ( rt_interrupt_enter )

引用了 rt_interrupt_enter().

函数调用图:

◆ rt_interrupt_leave()

rt_weak void rt_interrupt_leave ( void )

This function will be invoked by BSP, when leave interrupt service routine

注解: Please don't invoke this routine in application

参见: rt_interrupt_enter

在文件 irq.c 第 117 行定义.

{
    LOG_D("irq is going to leave, irq current nest:%d",
                 (rt_int32_t)rt_atomic_load(&(rt_interrupt_nest)));
    RT_OBJECT_HOOK_CALL(rt_interrupt_leave_hook,());
    rt_atomic_sub(&(rt_interrupt_nest), 1);
 
}

引用了 LOG_D, rt_atomic_load, rt_atomic_sub, rt_interrupt_nest , 以及 RT_OBJECT_HOOK_CALL.

这是这个函数的调用关系图:

◆ RTM_EXPORT() [2/6]

RTM_EXPORT ( rt_interrupt_leave )

引用了 rt_interrupt_leave().

函数调用图:

◆ rt_interrupt_get_nest()

rt_weak rt_uint8_t rt_interrupt_get_nest ( void )

This function will return the nest of interrupt.

User application can invoke this function to get whether current context is interrupt context.

返回: the number of nested interrupts.

在文件 irq.c 第 136 行定义.

{
    rt_uint8_t ret;
    rt_base_t level;
 
    level = rt_hw_local_irq_disable();
    ret = rt_atomic_load(&rt_interrupt_nest);
    rt_hw_local_irq_enable(level);
    return ret;
}