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/*
ChibiOS - Copyright (C) 2016..2018 Theodore Ateba
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/**
* @file WDGv1/hal_wdg_lld.h
* @brief WDG Driver subsystem low level driver header.
*
* @addtogroup WDG
* @{
*/
#ifndef HAL_WDG_LLD_H
#define HAL_WDG_LLD_H
#if (HAL_USE_WDG == TRUE) || defined(__DOXYGEN__)
/*==========================================================================*/
/* Driver constants. */
/*==========================================================================*/
/*==========================================================================*/
/* Driver pre-compile time settings. */
/*==========================================================================*/
/**
* @name Configuration options
* @{
*/
/**
* @brief WDT driver enable switch.
* @note The default is @p FALSE.
*/
#if !defined(AVR_WDG_USE_WDT) || defined(__DOXYGEN__)
#define AVR_WDG_USE_WDT FALSE
#endif
/** @} */
/*==========================================================================*/
/* Derived constants and error checks. */
/*==========================================================================*/
#define AVR_HAS_WDG TRUE
#if AVR_WDG_USE_WDT && !AVR_HAS_WDG
#error "WDT not present in the selected device"
#endif
#if !AVR_WDG_USE_WDT
#error "WDT driver activated but no WDT peripheral assigned"
#endif
/*==========================================================================*/
/* Driver data structures and types. */
/*==========================================================================*/
/**
* @brief Type of a structure representing an WDG driver.
*/
typedef struct WDGDriver WDGDriver;
/**
* @brief Driver configuration structure.
* @note It could be empty on some architectures.
*/
typedef struct {
/**
* @brief Configuration of the WDT driver mode.
*/
bool mode;
/**
* @brief Configuration of the WDT driver Nomal timeout period.
*/
WDT_PER_t ntp;
/**
* @brief Configuration of the WDT driver Closed timeout period.
*/
WDT_WPER_t ctp;
} WDGConfig;
/**
* @brief Structure representing an WDG driver.
*/
struct WDGDriver {
/**
* @brief Driver state.
*/
wdgstate_t state;
/**
* @brief Current configuration data.
*/
const WDGConfig *config;
/* End of the mandatory fields. */
/**
* @brief Pointer to the WDG*T registers block.
*/
WDT_t *wdg;
};
/*==========================================================================*/
/* Driver macros. */
/*==========================================================================*/
/*==========================================================================*/
/* External declarations. */
/*==========================================================================*/
#if (AVR_WDG_USE_WDT == TRUE) && !defined(__DOXYGEN__)
extern WDGDriver WDTD1;
#endif
#ifdef __cplusplus
extern "C" {
#endif
void wdg_lld_init(void);
void wdg_lld_start(WDGDriver *wdgp);
void wdg_lld_stop(WDGDriver *wdgp);
void wdg_lld_reset(WDGDriver *wdgp);
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_WDG == TRUE */
#endif /* HAL_WDG_LLD_H */
/** @} */
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