99 lines
3.6 KiB
C
99 lines
3.6 KiB
C
/****************************************************************************
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* arch/arm/src/imxrt/imxrt_wdog.c
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Author: Janne Rosberg <janne@offcode.fi>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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 <fixedmath.h>
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#include <assert.h>
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#include "up_arch.h"
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#include "hardware/imxrt_wdog.h"
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#include "imxrt_config.h"
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#include <arch/board/board.h> /* Include last: has dependencies */
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: imxrt_wdog_disable
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*
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* Description:
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* Disables all watchdogs
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*
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****************************************************************************/
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void imxrt_wdog_disable_all(void)
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{
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uint32_t reg;
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irqstate_t flags;
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reg = getreg16(IMXRT_WDOG1_WCR);
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if (reg & WDOG_WCR_WDE)
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{
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reg &= ~WDOG_WCR_WDE;
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putreg16(reg, IMXRT_WDOG1_WCR);
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}
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reg = getreg16(IMXRT_WDOG2_WCR);
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if (reg & WDOG_WCR_WDE)
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{
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reg &= ~WDOG_WCR_WDE;
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putreg16(reg, IMXRT_WDOG2_WCR);
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}
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flags = enter_critical_section();
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putreg32(RTWDOG_UPDATE_KEY, IMXRT_RTWDOG_CNT);
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putreg32(0xFFFF, IMXRT_RTWDOG_TOVAL);
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modifyreg32(IMXRT_RTWDOG_CS, RTWDOG_CS_EN, RTWDOG_CS_UPDATE);
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leave_critical_section(flags);
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}
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