aic.h

专业汽车级嵌入式操作系统OSEK的源代码

/* Driver for the AT91SAM7's Advanced Interrupt Controller (AIC).
 *
 * The AIC is responsible for queuing interrupts from other
 * peripherals on the board. It then hands them one by one to the ARM
 * CPU core for handling, according to each peripheral's configured
 * priority.
 */

#ifndef __AIC_H__
#  define __AIC_H__

#  include "mytypes.h"

void aic_initialise(void);
void aic_set_vector(U32 vector, U32 mode, U32 isr);
void aic_mask_on(U32 vector);
void aic_mask_off(U32 vector);
void aic_clear(U32 mask);

/* Priority levels for interrupt lines. */
#  define AIC_INT_LEVEL_LOW    2
#  define AIC_INT_LEVEL_NORMAL 4
#  define AIC_INT_LEVEL_ABOVE_NORMAL 5

#endif