88 lines
2.0 KiB
C
88 lines
2.0 KiB
C
/*
|
|
* Copyright (c) 2006-2021, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2006-08-23 Bernard first version
|
|
*/
|
|
|
|
#include <rtthread.h>
|
|
#include "AT91SAM7S.h"
|
|
|
|
#define MAX_HANDLERS 32
|
|
|
|
extern rt_atomic_t rt_interrupt_nest;
|
|
|
|
rt_uint32_t rt_interrupt_from_thread, rt_interrupt_to_thread;
|
|
rt_uint32_t rt_thread_switch_interrupt_flag;
|
|
|
|
/**
|
|
* @addtogroup AT91SAM7
|
|
*/
|
|
/*@{*/
|
|
|
|
void rt_hw_interrupt_handler(int vector)
|
|
{
|
|
rt_kprintf("Unhandled interrupt %d occured!!!\n", vector);
|
|
}
|
|
|
|
/**
|
|
* This function will initialize hardware interrupt
|
|
*/
|
|
void rt_hw_interrupt_init()
|
|
{
|
|
rt_base_t index;
|
|
|
|
for (index = 0; index < MAX_HANDLERS; index ++)
|
|
{
|
|
AT91C_AIC_SVR(index) = (rt_uint32_t)rt_hw_interrupt_handler;
|
|
}
|
|
|
|
/* init interrupt nest, and context in thread sp */
|
|
rt_interrupt_nest = 0;
|
|
rt_interrupt_from_thread = 0;
|
|
rt_interrupt_to_thread = 0;
|
|
rt_thread_switch_interrupt_flag = 0;
|
|
}
|
|
|
|
/**
|
|
* This function will mask a interrupt.
|
|
* @param vector the interrupt number
|
|
*/
|
|
void rt_hw_interrupt_mask(int vector)
|
|
{
|
|
/* disable interrupt */
|
|
AT91C_AIC_IDCR = 1 << vector;
|
|
|
|
/* clear interrupt */
|
|
AT91C_AIC_ICCR = 1 << vector;
|
|
}
|
|
|
|
/**
|
|
* This function will un-mask a interrupt.
|
|
* @param vector the interrupt number
|
|
*/
|
|
void rt_hw_interrupt_umask(int vector)
|
|
{
|
|
AT91C_AIC_IECR = 1 << vector;
|
|
}
|
|
|
|
/**
|
|
* This function will install a interrupt service routine to a interrupt.
|
|
* @param vector the interrupt number
|
|
* @param new_handler the interrupt service routine to be installed
|
|
* @param old_handler the old interrupt service routine
|
|
*/
|
|
void rt_hw_interrupt_install(int vector, rt_isr_handler_t new_handler, rt_isr_handler_t *old_handler)
|
|
{
|
|
if(vector >= 0 && vector < MAX_HANDLERS)
|
|
{
|
|
if (*old_handler != RT_NULL) *old_handler = (rt_isr_handler_t)AT91C_AIC_SVR(vector);
|
|
if (new_handler != RT_NULL) AT91C_AIC_SVR(vector) = (rt_uint32_t)new_handler;
|
|
}
|
|
}
|
|
|
|
/*@}*/
|