path: root/c/src/lib/libbsp/arm/lpc24xx/irq/irq-dispatch.c

/**
 * @file
 *
 * @ingroup bsp_interrupt
 *
 * @brief LPC24XX interrupt support.
 */

/*
 * Copyright (c) 2008-2012 embedded brains GmbH.  All rights reserved.
 *
 *  embedded brains GmbH
 *  Obere Lagerstr. 30
 *  82178 Puchheim
 *  Germany
 *  <rtems@embedded-brains.de>
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rtems.com/license/LICENSE.
 */

#include <rtems/score/armv4.h>

#include <bsp.h>
#include <bsp/irq.h>
#include <bsp/irq-generic.h>
#include <bsp/lpc24xx.h>

#ifdef ARM_MULTILIB_ARCH_V4

void bsp_interrupt_dispatch(void)
{
  /* Read current vector number */
  rtems_vector_number vector = VICVectAddr;

  /* Enable interrupts in program status register */
  uint32_t psr = arm_status_irq_enable();

  /* Dispatch interrupt handlers */
  bsp_interrupt_handler_dispatch(vector);

  /* Restore program status register */
  arm_status_restore(psr);

  /* Acknowledge interrupt */
  VICVectAddr = 0;
}

#endif /* ARM_MULTILIB_ARCH_V4 */