arch_interrupt.h — 中断管理接口头文件

源文件路径: arch/arm/armv7m/include/arch_interrupt.h

引用章节: 4.9 中断管理

完整源码

/**
 ***********************************************************************************************************************
 * Copyright (c) 2020, China Mobile Communications Group Co.,Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with 
 * the License. You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on 
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the 
 * specific language governing permissions and limitations under the License.
 *
 * @file        arch_interrupt.h
 *
 * @brief       Header file for interrupt related functions.
 *
 * @revision
 * Date         Author          Notes
 * 2021-01-12   OneOS Team      First version.
 ***********************************************************************************************************************
 */

#ifndef __ARCH_INTERRUPT_H__
#define __ARCH_INTERRUPT_H__

#include <os_types.h>
#include <oneos_config.h>

#ifdef __cplusplus
extern "C" {
#endif

extern os_ubase_t os_irq_lock(void);
extern void       os_irq_unlock(os_ubase_t irq_save);

extern void os_irq_disable(void);
extern void os_irq_enable(void);

extern os_bool_t   os_is_irq_active(void);
extern os_bool_t   os_is_irq_disabled(void);
extern uint32_t os_irq_num(void);

extern os_bool_t os_is_fault_active(void);

#ifdef OS_USING_INTERRUPT_STACK_OVERFLOW_CHECK
extern void os_interrupt_stack_check(void);
#else
#define os_interrupt_stack_check()
#endif

#ifdef __cplusplus
}
#endif

#endif /* __ARCH_INTERRUPT_H__ */

关键说明

模块	说明
中断控制	os_irq_lock/unlock 保存/恢复 PRIMASK（支持嵌套），os_irq_disable/enable 不保存状态（不可嵌套）
状态查询	os_is_irq_active 读 IPSR 判断中断上下文，os_is_irq_disabled 读 PRIMASK 判断中断开关
中断号	os_irq_num 读取 IPSR 获取当前中断号（0=任务上下文，≥16=外设中断）
异常判断	os_is_fault_active 判断 IPSR 是否在 [3,6] 范围（HardFault~UsageFault）
栈检测	os_interrupt_stack_check 由 OS_USING_INTERRUPT_STACK_OVERFLOW_CHECK 条件编译控制