diff options
Diffstat (limited to 'src/irq.c')
| -rw-r--r-- | src/irq.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/irq.c b/src/irq.c new file mode 100644 index 0000000000..cdad403976 --- /dev/null +++ b/src/irq.c @@ -0,0 +1,69 @@ +/* + * File : irq.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://openlab.rt-thread.com/license/LICENSE + * + * Change Logs: + * Date Author Notes + * 2006-02-24 Bernard first version + * 2006-05-03 Bernard add IRQ_DEBUG + */ + +#include <rthw.h> +#include <rtthread.h> + +/* #define IRQ_DEBUG */ + +/** + * @addtogroup Kernel + */ + +/*@{*/ + +volatile rt_uint32_t rt_interrupt_nest; + +/** + * This function will be invoked by BSP, when enter interrupt service routine + * + * @note please don't invoke this routine in application + * + * @see rt_interrupt_leave + */ +void rt_interrupt_enter() +{ + rt_base_t level; + +#ifdef IRQ_DEBUG + rt_kprintf("irq comming..., irq nest:%d\n", rt_interrupt_nest); +#endif + + level = rt_hw_interrupt_disable(); + rt_interrupt_nest ++; + rt_hw_interrupt_enable(level); +} + +/** + * This function will be invoked by BSP, when leave interrupt service routine + * + * @note please don't invoke this routine in application + * + * @see rt_interrupt_enter + */ +void rt_interrupt_leave() +{ + rt_base_t level; + +#ifdef IRQ_DEBUG + rt_kprintf("irq leave, irq nest:%d\n", rt_interrupt_nest); +#endif + + level = rt_hw_interrupt_disable(); + rt_interrupt_nest --; + rt_hw_interrupt_enable(level); +} + +/*@}*/ |