112 lines
5.8 KiB
C
112 lines
5.8 KiB
C
/************************************************************************************
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* arch/arm/src/lpc43xx/lpc43_wwdt.h
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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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#ifndef __ARCH_ARM_SRC_LPC43XX_CHIP_LPC43_WWDT_H
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#define __ARCH_ARM_SRC_LPC43XX_CHIP_LPC43_WWDT_H
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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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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/* Register offsets *****************************************************************/
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#define LPC43_WWDT_MOD_OFFSET 0x0000 /* Watchdog mode register */
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#define LPC43_WWDT_TC_OFFSET 0x0004 /* Watchdog timer constant register */
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#define LPC43_WWDT_FEED_OFFSET 0x0008 /* Watchdog feed sequence register */
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#define LPC43_WWDT_TV_OFFSET 0x000c /* Watchdog timer value register */
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#define LPC43_WWDT_WARNINT_OFFSET 0x0014 /* Watchdog warning interrupt register */
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#define LPC43_WWDT_WINDOW_OFFSET 0x0018 /* Watchdog timer window register */
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/* Register addresses ***************************************************************/
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#define LPC43_WWDT_MOD (LPC43_WWDT_BASE+LPC43_WWDT_MOD_OFFSET)
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#define LPC43_WWDT_TC (LPC43_WWDT_BASE+LPC43_WWDT_TC_OFFSET)
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#define LPC43_WWDT_FEED (LPC43_WWDT_BASE+LPC43_WWDT_FEED_OFFSET)
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#define LPC43_WWDT_TV (LPC43_WWDT_BASE+LPC43_WWDT_TV_OFFSET)
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#define LPC43_WWDT_WDCLKSEL (LPC43_WWDT_BASE+LPC43_WWDT_WDCLKSEL_OFFSET)
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#define LPC43_WWDT_WARNINT (LPC43_WWDT_BASE+LPC43_WWDT_WARNINT_OFFSET)
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#define LPC43_WWDT_WINDOW (LPC43_WWDT_BASE+LPC43_WWDT_WINDOW_OFFSET)
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/* Register bit definitions *********************************************************/
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/* Watchdog mode register */
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#define WWDT_MOD_WDEN (1 << 0) /* Bit 0: Watchdog enable */
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#define WWDT_MOD_WDRESET (1 << 1) /* Bit 1: Watchdog reset enable */
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#define WWDT_MOD_WDTOF (1 << 2) /* Bit 2: Watchdog time-out */
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#define WWDT_MOD_WDINT (1 << 3) /* Bit 3: Watchdog interrupt */
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#define WWDT_MOD_WDPROTECT (1 << 4) /* Bit 4: Watchdog update mode */
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/* Bits 5-31: Reserved */
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/* Watchdog timer constant register */
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#define WWDT_TC_MASK 0x00ffffff /* Bits 0-23: Watchdog time-out value */
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/* Bits 24-31: Reserved */
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/* Watchdog feed sequence register */
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#define WWDT_FEED_MASK 0xff /* Bits 0-7: Feed value: 0xaa followed by 0x55 */
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/* Bits 14-31: Reserved */
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/* Watchdog timer value register */
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#define WWDT_TV_MASK 0x00ffffff /* Bits 0-23: Counter timer value */
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/* Bits 24-31: Reserved */
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/* Watchdog warning interrupt register */
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#define WWDT_WARNINT_MASK 0x03ff /* Bits 0-9: Watchdog warning compare value */
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/* Bits 10-31: Reserved */
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/* Watchdog timer window register */
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#define WWDT_WINDOW_MASK 0x00ffffff /* Bits 0-23: Watchdog window value */
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/* Bits 24-31: Reserved */
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/************************************************************************************
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* Public Types
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************************************************************************************/
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/************************************************************************************
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* Public Data
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************************************************************************************/
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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#endif /* __ARCH_ARM_SRC_LPC43XX_CHIP_LPC43_WWDT_H */
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