100 lines
3.9 KiB
C
100 lines
3.9 KiB
C
/****************************************************************************
|
|
* arch/arm/src/lpc43/lpc43_clrpend.c
|
|
* arch/arm/src/chip/lpc43_clrpend.c
|
|
*
|
|
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <arch/irq.h>
|
|
|
|
#include "nvic.h"
|
|
#include "up_arch.h"
|
|
|
|
#include "lpc43_irq.h"
|
|
|
|
/****************************************************************************
|
|
* Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: lpc43_clrpend
|
|
*
|
|
* Description:
|
|
* Clear a pending interrupt at the NVIC. This does not seem to be required
|
|
* for most interrupts. Don't know why... but the LPC4366 Ethernet EMAC
|
|
* interrupt definitely needs it!
|
|
*
|
|
* This function is logically a part of lpc43_irq.c, but I will keep it in
|
|
* a separate file so that it will not increase the footprint on LPC43xx
|
|
* platforms that do not need this function.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void lpc43_clrpend(int irq)
|
|
{
|
|
/* Check for external interrupt */
|
|
|
|
if (irq >= LPC43_IRQ_EXTINT)
|
|
{
|
|
if (irq < (LPC43_IRQ_EXTINT + 32))
|
|
{
|
|
putreg32(1 << (irq - LPC43_IRQ_EXTINT), NVIC_IRQ0_31_CLRPEND);
|
|
}
|
|
else if (irq < LPC43M4_IRQ_NIRQS)
|
|
{
|
|
putreg32(1 << (irq - LPC43_IRQ_EXTINT - 32), NVIC_IRQ32_63_CLRPEND);
|
|
}
|
|
}
|
|
}
|