blob: e871019f97ad47d6a9b6b776f3b148c82d727f03 [file] [log] [blame]
/****************************************************************************
* arch/arm/src/nrf52/nrf52_utils.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <arch/irq.h>
#include "nvic.h"
#include "arm_internal.h"
#include "nrf52_irq.h"
#include "hardware/nrf52_utils.h"
#include "hardware/nrf52_memorymap.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nrf52_clrpend
*
* Description:
* Clear a pending interrupt at the NVIC. This does not seem to be
* required for most interrupts.
*
* This function is logically a part of nrf52_irq.c, but I will keep it in
* a separate file so that it will not increase the footprint on NRF52
* platforms that do not need this function.
*
****************************************************************************/
void nrf52_clrpend(int irq)
{
/* Check for external interrupt */
if (irq >= NRF52_IRQ_EXTINT)
{
if (irq < (NRF52_IRQ_EXTINT + 32))
{
putreg32(1 << (irq - NRF52_IRQ_EXTINT), NVIC_IRQ0_31_CLRPEND);
}
else if (irq < NRF52_IRQ_NIRQS)
{
putreg32(1 << (irq - NRF52_IRQ_EXTINT - 32),
NVIC_IRQ32_63_CLRPEND);
}
}
}
/****************************************************************************
* Name: nrf52_easydma_valid
*
* Description:
* Validate if easyDMA transfer is possible.
*
****************************************************************************/
bool nrf52_easydma_valid(uint32_t addr)
{
#ifdef CONFIG_DEBUG_FEATURES
/* EasyDMA cannot access flash memory */
if (addr >= NRF52_FLASH_BASE && addr < NRF52_SRAM_BASE)
{
return false;
}
#endif
return true;
}