84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
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/****************************************************************************
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* arch/arm/irq/up_trigger_irq.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <assert.h>
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#include <nuttx/arch.h>
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#include <arch/irq.h>
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#include "up_arch.h"
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#include "nvic.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_trigger_irq
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*
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* Description:
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* Trigger an IRQ by software.
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*
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****************************************************************************/
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void up_trigger_irq(int irq)
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{
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uint32_t pend_bit = 0;
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DEBUGASSERT(irq >= NVIC_IRQ_NMI && irq < NR_IRQS);
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if (irq >= NVIC_IRQ_FIRST)
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{
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putreg32(irq - NVIC_IRQ_FIRST, NVIC_STIR);
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}
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else
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{
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switch (irq)
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{
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case NVIC_IRQ_PENDSV:
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pend_bit = NVIC_INTCTRL_PENDSVSET;
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break;
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case NVIC_IRQ_NMI:
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pend_bit = NVIC_INTCTRL_NMIPENDSET;
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break;
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case NVIC_IRQ_SYSTICK:
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pend_bit = NVIC_INTCTRL_PENDSTSET;
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break;
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default:
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break;
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}
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if (pend_bit)
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{
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modifyreg32(NVIC_INTCTRL, 0, pend_bit);
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}
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}
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}
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