96 lines
3.4 KiB
C
96 lines
3.4 KiB
C
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/****************************************************************************
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* arch/arm/include/rp2040/watchdog.h
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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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#ifndef __ARCH_ARM_INCLUDE_RP2040_WATCHDOG_H
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#define __ARCH_ARM_INCLUDE_RP2040_WATCHDOG_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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#include <nuttx/timers/watchdog.h>
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#ifndef __ASSEMBLY__
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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#ifdef CONFIG_WATCHDOG
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* IOCTL Commands ***********************************************************/
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/* The watchdog driver uses a standard character driver framework. However,
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* since the watchdog driver is a device control interface and not a data
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* transfer interface, the majority of the functionality is implemented in
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* driver ioctl calls.
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*
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* See nuttx/timers/watchdog.h for the IOCTLs handled by the upper half.
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*
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* These are detected and handled by the "lower half" watchdog timer driver.
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*
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* WDIOC_SET_SCRATCHn - save a 32-bit "arg" value in a scratch register
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* that will be preserved over soft resets. A hard
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* reset sets all scratch values to zero.
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*
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* WDIOC_GET_SCRATCHn - fetch a 32-bit value from a scratch register
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* into a uint32_t pointed to by "arg".
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*/
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#define WDIOC_SET_SCRATCH0 _WDIOC(0x180)
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#define WDIOC_SET_SCRATCH1 _WDIOC(0x181)
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#define WDIOC_SET_SCRATCH2 _WDIOC(0x182)
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#define WDIOC_SET_SCRATCH3 _WDIOC(0x183)
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#define WDIOC_SET_SCRATCH4 _WDIOC(0x184)
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#define WDIOC_SET_SCRATCH5 _WDIOC(0x185)
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#define WDIOC_SET_SCRATCH6 _WDIOC(0x186)
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#define WDIOC_SET_SCRATCH7 _WDIOC(0x187)
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#define WDIOC_SET_SCRATCH(n) _WDIOC(0x180 + (n))
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#define WDIOC_GET_SCRATCH0 _WDIOC(0x1f0)
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#define WDIOC_GET_SCRATCH1 _WDIOC(0x1f1)
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#define WDIOC_GET_SCRATCH2 _WDIOC(0x1f2)
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#define WDIOC_GET_SCRATCH3 _WDIOC(0x1f3)
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#define WDIOC_GET_SCRATCH4 _WDIOC(0x1f4)
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#define WDIOC_GET_SCRATCH5 _WDIOC(0x1f5)
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#define WDIOC_GET_SCRATCH6 _WDIOC(0x1f6)
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#define WDIOC_GET_SCRATCH7 _WDIOC(0x1f7)
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#define WDIOC_GET_SCRATCH(n) _WDIOC(0x1f0 + (n))
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#endif /* CONFIG_WATCHDOG */
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_ARM_INCLUDE_RP2040_WATCHDOG_H */
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