dbdec45049
Replace enter_critical_section with spin_lock_irqsave. Replace leave_critical_section with spin_unlock_irqrestore. Signed-off-by: Abdelatif Guettouche <abdelatif.guettouche@espressif.com>
60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
/****************************************************************************
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* arch/xtensa/src/common/xtensa_modifyreg8.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 <debug.h>
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#include <nuttx/irq.h>
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#include <nuttx/arch.h>
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#include <nuttx/spinlock.h>
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#include "xtensa.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: modifyreg8
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*
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* Description:
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* Atomically modify the specified bits in a memory mapped register
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*
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****************************************************************************/
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void modifyreg8(unsigned int addr, uint8_t clearbits, uint8_t setbits)
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{
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irqstate_t flags;
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uint8_t regval;
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flags = spin_lock_irqsave(NULL);
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regval = getreg8(addr);
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regval &= ~clearbits;
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regval |= setbits;
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putreg8(regval, addr);
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spin_unlock_irqrestore(NULL, flags);
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}
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